On September 2nd, Shenyang qingquan Shengjing rowing club team competed in U13 group double sculls (photo of drone).

　　On the same day, the 6th Shenyang Rowing Open started in Hunhe waters, which is known as the "still water track of the most beautiful city in China". More than 400 athletes and coaches from more than 30 teams from all over the world participated in the competition.

　　Xinhua News Agency reporter Chen Weishe

　　On September 2 nd, the rowing team of Liaoning Communication College competed in the single paddle competition of eight men and women in the university group.

　　On the same day, the 6th Shenyang Rowing Open started in Hunhe waters, which is known as the "still water track of the most beautiful city in China". More than 400 athletes and coaches from more than 30 teams from all over the world participated in the competition.

　　Xinhua News Agency reporter Chen Weishe

　　On September 2nd, the rowing team of Xi ‘an Jiaotong University (right) and the rowing team of Tongji University World Bank competed in the men’s eight-person single paddle competition in the university group (photo of drone).

　　On the same day, the 6th Shenyang Rowing Open started in Hunhe waters, which is known as the "still water track of the most beautiful city in China". More than 400 athletes and coaches from more than 30 teams from all over the world participated in the competition.

　　Xinhua News Agency reporter Chen Weishe

　　On September 2nd, Peking University student rowing team competed in the men’s eight-person single paddle competition in the university group.

　　On the same day, the 6th Shenyang Rowing Open started in Hunhe waters, which is known as the "still water track of the most beautiful city in China". More than 400 athletes and coaches from more than 30 teams from all over the world participated in the competition.

　　Xinhua News Agency reporter Chen Weishe

　　On September 2nd, Shenyang qingquan Shengjing rowing club team competed in U13 group double sculls.

　　On the same day, the 6th Shenyang Rowing Open started in Hunhe waters, which is known as the "still water track of the most beautiful city in China". More than 400 athletes and coaches from more than 30 teams from all over the world participated in the competition.

　　Xinhua News Agency reporter Chen Weishe

　　On September 2nd, the No.9 Middle School and No.9 Small Rowing Team in Hunnan District of Shenyang was in the U13 group double sculls competition (photo of drone).

　　On the same day, the 6th Shenyang Rowing Open started in Hunhe waters, which is known as the "still water track of the most beautiful city in China". More than 400 athletes and coaches from more than 30 teams from all over the world participated in the competition.

　　Xinhua News Agency reporter Chen Weishe

　　On September 2 nd, Shengjing Rose Rowing Team was in the women’s quadruple sculls competition in the Master Group (photo of drone).

　　On the same day, the 6th Shenyang Rowing Open started in Hunhe waters, which is known as the "still water track of the most beautiful city in China". More than 400 athletes and coaches from more than 30 teams from all over the world participated in the competition.

　　Xinhua News Agency reporter Chen Weishe

　　People’s Daily Online, Beijing, May 31 (Reporter Yang Xi) According to the news of the General Administration of Market Supervision, recently, the Safety Precautions for Primary and Secondary Schools and Kindergartens (GB/T 29315-2022) (hereinafter referred to as the Requirements) was approved by the General Administration of Market Supervision (Standards Committee) and will be officially implemented on June 1, 2022.

　　It is understood that this is the first revision after the release of the original "Safety Technology Prevention System Requirements for Primary and Secondary Schools and Kindergartens" (GB/T 29315-2012) in 2012. The release and implementation of the new "Requirements" make up for the low requirements of manpower prevention and physical prevention in the 2012 edition of "Requirements for Safety Technology Prevention System for Primary and Secondary Schools and Kindergartens", and the mismatch between the system technical indicators and the application of new technologies. It is of great significance to further improve the standard system of campus security.

　　The revision of "Requirements" follows the guiding principle of "practical, scientific and advanced, and moderately advanced", focusing on the combination of civil air defense, physical defense and technical defense in campus safety, taking the personal safety of students and faculty as the main goal, proceeding from reality, strengthening the problem orientation, making efforts to improve relevant contents and technical specifications in key parts, important measures, emergency response and technical support, and improving the level of school safety prevention.

　　The core contents of the Requirements include key parts and areas, overall prevention requirements, human prevention requirements, entity prevention requirements, electronic prevention requirements and technical requirements of safety prevention system, which are applicable to the construction and management of safety prevention systems in primary and secondary schools and kindergartens, and can be used for reference in the construction and management of safety prevention systems in other institutions or places such as centralized education and training, rescue and protection for minors.

　　The highlight of the Requirements is to define the key parts and areas of safety precautions. Adhere to the concept of "life first, safety first" as the center, combined with the series deployment of safety protection work in primary and secondary schools and kindergartens by the state and relevant departments in recent years and the different types and scales of the campus, 16 key parts and areas of safety protection have been defined, and the campus safety protection area has been extended from the inside to the door and surrounding areas.

　　The distinctive feature of "Requirements" is that it embodies the combination of civil air defense, physical defense and technical defense in campus safety, integrates new technologies and new concepts of safety prevention, and improves the operability of standards. Detailed provisions have been made on the preventive measures and system technical requirements of key parts and regions, so as to promote the campus safety prevention work to be more solid and effective, and ensure that the technical indicators of the system match and coordinate with the application of new technologies.

　　According to reports, in the next step, the General Administration of Market Supervision (Standards Committee) will take a number of measures to actively carry out the publicity and implementation activities of the Requirements, organize the compilation of publicity training materials, and record publicity training videos for relevant management departments, primary and secondary schools, and kindergartens to learn and understand. The Ministry of Public Security and the Ministry of Education will also issue notices in conjunction with the promulgation and implementation of the Requirements to promote the implementation of primary and secondary schools and kindergartens.

　　Image source: Official WeChat of the General Administration of Market Supervision

　　According to the data of the seventh national census published by the National Bureau of Statistics, the resident population of Dalian City in Liaoning Province reached 5.21 million, ranking among the megacities. The picture shows the scenery of downtown Dalian. Wang Huashe (People’s Vision)

　　In recent years, Kunming, the "Spring City", has a good momentum of high-quality development, and the ecological environment of Dianchi Lake has been continuously improved. The picture shows tourists watching the red-billed gull on the ridge dam in Dianchi Lake on November 21st. Xinhua News Agency reporter Chen Xinbo photo

　　The twin-city economic circle in Chengdu-Chongqing region is located at the intersection of the "Belt and Road" and the Yangtze River Economic Belt, and is the starting point of the new land and sea passage in the west. The picture shows that on November 22nd, the Sichuan Tea Export Central Asia Special Train departed from Chengdu International Railway Port to Tashkent, Uzbekistan. Photo by Bai Guibin (People’s Vision)

　　What are the mega cities in China? What is the economic development of these cities in the first three quarters of this year? Not long ago, based on the data of the seventh national census, the National Bureau of Statistics released the "Basic Situation of the Population of Megacities and Megacities in the Seventh National Census", showing that the "Club" of megacities in China has expanded again, including 7 megacities and 14 megacities in China. These cities are also remarkable in terms of economic development. Since the beginning of this year, they have handed in brilliant answers, and the GDP of many urban areas has exceeded 1 trillion yuan.

　　Re-expansion of clubs in megacities

　　What kind of cities are "megacities" and "megacities"? The National Bureau of Statistics explained that the scale of "mega-cities" and "mega-cities" is divided according to the "Notice of the State Council on Adjusting the Criteria for Urban Size Classification" issued in 2014: cities with more than 5 million urban residents and less than 10 million urban residents are megacities, and cities with more than 10 million urban residents are megacities; The urban population of each city is the population at the standard time of the seventh census (0: 00 on November 1, 2020).

　　Previously, according to the Statistical Yearbook of Urban Construction in 2019 released by the Ministry of Housing and Urban-Rural Development, China has 6 mega cities including Shanghai, Beijing, Chongqing, Guangzhou, Shenzhen and Tianjin, and 10 mega cities including Dongguan, Wuhan, Chengdu, Hangzhou, Nanjing, Zhengzhou, Xi ‘an, Jinan, Shenyang and Qingdao.

　　According to the data of "Seventh General Plan", four new members have been added to this mega-city "Club": the urban populations of Kunming, Changsha, Dalian and Harbin all exceed 5 million. At the same time, Chengdu ranks among the megacities with an urban population of 13.34 million. In addition, Wuhan ranks eighth in the list of megacities with an urban population of 9.95 million, only 50,000 people away from the "qualification" of megacities.

　　Why does the "club" of mega-cities expand again and again? "Sycamore trees attract golden phoenix", and population migration is an important reason. During the 10 years from "Sixth General Plan" to "Seventh General Plan", a large number of young people poured into mega-cities and injected fresh blood into urban development. In recent years, cities have launched a "war of grabbing people" to attract talents to work and settle down, and various attractive settlement policies are dizzying.

　　The high-quality development of regional economy has provided more development opportunities for all kinds of talents. Not long ago, the Central Committee of the Communist Party of China and the State Council issued the Planning Outline for the Construction of Twin Cities Economic Circle in Chengdu-Chongqing Region, which set the tone for writing a new chapter in Chengdu-Chongqing "Tale of Two Cities" and strengthened the confidence of many young people to develop here. "The ancients said ‘ Less into Shu ’ I think the city of Chengdu is also very suitable for struggle. Many young people around me like the pace of life and development opportunities here. " Chai Yun, a 27-year-old Chengdu youth who returned to his hometown after graduation, said.

　　"Young people have chosen this city, and this city will also bring surprises to young people who choose her." Chai Yun believes that the high-quality development of the twin-city economic circle in Chengdu-Chongqing region will reach a higher level in the future. In recent years, with the economic and social development of Chengdu-Chongqing region, the population size and economic aggregate of the western Gemini have been rising continuously. By the end of October, 67 major projects with a total investment of 1.57 trillion yuan had been started in Sichuan and Chongqing in 2021, with a cumulative investment of 186.68 billion yuan. This time, Chengdu has entered the ranks of megacities after Chongqing, which is expected by most people.

　　Dongguan, Shenzhen is "young", and Beijing and Shanghai are aging.

　　Megacity and megacity are not just a title.

　　On the one hand, the number of urban permanent residents is an important "threshold" for urban development and construction. It is understood that according to the relevant regulations, the resident population of urban areas that are currently applying for the construction of subways should be more than 3 million. At the same time, according to the regulations of the Ministry of Housing and Urban-Rural Development and the Emergency Management Department, cities with a permanent population of less than 3 million in urban areas are not allowed to build super-high-rise buildings with a height of more than 250 meters; Cities with a permanent population of more than 3 million shall not build super high-rise buildings of more than 500 meters.

　　On the other hand, megacities have played an important role in promoting China’s economic growth. Ning Ji Zhe, director of the National Bureau of Statistics, said earlier that since the reform and opening up, first-tier cities such as Beijing, Shanghai, Shenzhen and Guangzhou, as well as other super-large cities, have witnessed substantial economic growth, a significant increase in population, continuous opening-up and vigorous development of social undertakings, which have become an important engine for China’s economic growth, an important hub for opening up to the outside world and an important support for national governance.

　　The population structure of mega-cities has a far-reaching impact on the future development of cities and has attracted much attention.

　　Which cities are the youngest? According to the data of "Qipu", the proportion of people over 60 years old in Shenzhen and Dongguan is about 5%, which is significantly lower than that in other megacities.

　　Which cities have the most "silver-haired people"? Looking at the proportion of people over 60 years old, the two first-tier cities, Beijing and Shanghai, have a high degree of population aging. Shanghai’s population over the age of 60 accounts for 23.38%, ranking second among all megacities; The proportion of people over 60 in Beijing is also close to 20%. At the same time, most of the mega-cities with a population over 60 years old of more than 20% are located in the north, among which Dalian in the northeast ranks first, and the proportion of people over 60 years old in Harbin and Shenyang is also at a high level.

　　Lu Jiehua, a professor of sociology in Peking University, analyzed that the low fertility rate is the primary factor leading to the deepening of population aging in megacities. In addition, the higher supply level of old-age services in megacities attracts the elderly to settle down with their children, and the outflow of labor force also leads to the aging of some megacities.

　　Analysts pointed out that megacities have the opportunity to turn population aging into development opportunities. Among them, first-tier cities need to pay attention to cost and service. Ning Ji Zhe said that at present, the overall level of pension and social security in first-tier cities is relatively high, and the average life expectancy is above 80 years, ranking among the best in various cities. "What needs to be improved is to control costs and improve services".

　　"While controlling costs and improving services, we should also pay attention to the imbalance in the supply of old-age services between different cities." Lu Jiehua said that in first-tier cities and other megacities with high economic and social development level, the pension level and the income of the elderly are relatively high, and the inflow of young working people has largely offset the impact of the aging population, and the supply level of old-age services is relatively high and mutual assistance is strong. At the same time, the inflow of young people in some megacities represented by Northeast China is less, and compared with the former, it is "older" and "older faster", and the problem that the supply level of old-age services does not adapt to the process of population aging is prominent. To this end, we should promote a more balanced allocation of resources for aged care services among different cities.

　　Optimize and promote the core competitiveness of mega-cities

　　Not only does it attract population focus, but mega-cities also play an increasingly prominent role in leading regional economic development.

　　In the first three quarters of this year, the GDP of seven mega-cities including Shanghai, Beijing, Chongqing, Guangzhou, Shenzhen, Tianjin and Chengdu all exceeded 1 trillion yuan. Among them, Shanghai’s GDP first exceeded 3 trillion yuan, reaching 3,086.673 billion yuan. Beijing’s GDP in the first three quarters was 2,975.30 billion yuan. It is estimated that the annual GDP of the two places is expected to exceed 4 trillion yuan.

　　In the first three quarters of 14 mega-cities, the GDP of most of them reached more than 500 billion yuan, among which the GDP of Changsha, a "new member" of this mega-city, was 958.698 billion yuan in the first three quarters, which was close to the threshold of one trillion yuan.

　　During the 14th Five-Year Plan period, how to improve the spatial layout of urbanization and optimize the function of the central city of megacities? Ning Ji Zhe introduced that the relevant planning and deployment have the following points:

　　— — Promote the high-quality and sustainable development of megacities. Including promoting the transformation of development and construction methods in megacities and strengthening the prevention and control of urban governance risks; Promote the transformation of urban development mode from scale expansion to connotation promotion; Steadily improve the level of social security and the modernization level of urban governance; Strengthen the central radiation function of megacities, better promote rural revitalization and promote urban-rural integration and development.

　　— — Reasonably reduce the development intensity and population density of megacities. Orderly deconstruct the functions and facilities of general manufacturing, regional logistics bases, professional markets and over-concentrated public resources in the central city, and strengthen risk prevention and control in urban governance.

　　— — Optimize and promote the core competitiveness of mega-cities Strengthen the global resource allocation, the source of scientific and technological innovation and the leading function of high-end industries, take the lead in forming an industrial structure with modern service industry as the main body and advanced manufacturing industry as the support, and enhance the comprehensive energy level and international competitiveness.

　　Lu Jiehua believes: "The driving force and vitality of the development of mega-cities not only comes from scale expansion, but also from structural optimization and connotation improvement." He said that in the process of promoting the high-quality and sustainable development of mega-cities, on the one hand, it is necessary to scientifically plan the urban production, living and ecological space, optimize the spatial distribution of various facilities and functions, and strive to improve the population quality while reasonably reducing the population density; On the other hand, it is necessary to provide better basic public services, solidly practice the "basic skills" of urban development such as housing, education, medical care and old-age care, improve the level of social security and the modernization level of urban governance, and provide a stable guarantee for residents to live and work in peace and contentment. In addition, we should give full play to the role of agglomeration and radiation of mega-cities to better serve the optimization of spatial pattern of economic development and regional coordinated development, and drive the high-quality economic development of China.

Indian officials admitted that the computer network of the largest Kudankulam nuclear power plant was attacked from outside in October. The nuclear power plant is mainly designed and supplied by Russia with reactor units to provide electricity for the southern power grid of India. This nuclear power plant has become one of the largest cooperation projects between India and Russia.

According to the American Bulletin of Atomic Scientists, although the reactor operation of Kudankulam nuclear power plant has not been affected, this incident once again warns that the two biggest security risks of human society, namely cyber attacks and nuclear deterrence, are in a dangerous "collision", and its serious consequences may completely turn into uncontrollable man-made disasters.

Kudankulam nuclear power plant　

There have been more than 20 cyber attacks on nuclear facilities in the past 30 years.

The cyber attack on India’s nuclear power plant naturally reminds people of the past when Iran’s nuclear power plant was attacked by the "Shenzhen" virus in 2010, resulting in the paralysis of more than 1,000 centrifuges. In fact, the incidents of cyber attacks on nuclear power plants continue.

According to media reports, there have been more than 20 known cyber attacks against nuclear facilities since 1990. These incidents include malicious intrusions caused by software vulnerabilities and test updates. Although compared with the "Shenzhen" virus incident, these are not well known, but it also clearly shows that nuclear facilities can no longer be spared from cyber attacks. Cyber attacks on nuclear power plants may lead to great disasters and should be highly valued.

For all this, the initiator of cyber warfare and nuclear weapons, the clearer the result, the more fearful the psychology. The United States has regarded cyber attacks as the primary threat beyond terrorism. As early as 2009, after Obama, the "cyber president", took office, he immediately launched a 60-day cyberspace security assessment, and immediately took cyber security, nuclear security and combating terrorism as a "trinity" national strategy. Former US National Intelligence Director and Admiral Mike McConnell once pointed out that "terrorist organizations will master complex network technologies sooner or later, just like nuclear proliferation, but it is easier for them to achieve."

Informatization is a "double-edged sword", which is a golden opportunity and contains unprecedented risks. As the digitalization of nuclear reactor instruments and control systems increases, the possibility of harm caused by malicious and unexpected network attacks is also increasing. At the same time, according to a report published by Chatham House, a British think tank, in 2015, network security is a common shortcoming in the nuclear power industry, which runs through management, training and user behavior. Both natural loopholes and man-made defects may become convenient doors for cyber attacks and directly ignite the fuse of nuclear facilities out of control.

The consequences may be as the then US Secretary of Defense Panetta warned on October 11, 2012, "Cyber attacks can destroy the operation of passenger trains, pollute water supply or shut down most of the electricity supply in the United States, which can be the online version of Pearl Harbor incident, causing a lot of physical damage and casualties, paralyzing daily operations, shocking people and creating new fears."

The accident at Chernobyl nuclear power plant left a deep impression on the world.　　

Indian nuclear power plant or infected with Trojan virus

The malware infected in the intranet of India’s nuclear power plant is said to have been developed by a hacker organization in a certain country and belongs to the variant of backdoor Trojan horse. Its functions include stealing keyboard records of devices, retrieving browser history records, and listing running processes, etc. It does not seem to be a malicious direct destructive virus. But not coincidentally, just a few days before the media reported the cyber attack, the nuclear power plant unexpectedly shut down a reactor. Although the relevant institutions strongly deny that the incident is related to the invasion of malicious software, the consequences of the network attack on the power grid are likely to be unpredictable and more difficult to control.

The thrilling collapse of Ukrainian power grid in the cold winter of 2015 was considered by Russian hackers. In March this year, Venezuela’s national power grid was paralyzed in a large area, and its president and information minister called it a cyber war carefully planned by the United States. In June this year, the suspense of multi-country power grid paralysis in South America, Russian experts must be American cyber warfare exercises, in an attempt to trigger social unrest in the region. In fact, including the rumors of American officials that their cyber forces preset malicious code in the Russian power grid, there is a shadow of "undeclared war" behind them, which represents a new invasion mode that can quietly cause large-scale damage; Even more, the fear of "cutting the bottom of the pot" is enough to destroy the electric energy that modern society depends on and cause the paralysis of the whole society.

Besides, the terrorists haven’t stopped thinking for a moment. The demonstration effect of the network power makes the terrorists’ hearts beat faster, and it is very likely that they will finally master the advanced cyber attack technology. The world has long been alert to this. On December 17, 2013, the United Nations Security Council unanimously adopted Resolution 2129, explicitly cracking down on the use of the Internet to commit terrorist acts. However, at present, cyber terrorism is only in the initial stage of development, that is, using the network for mobilization, publicity, series connection, fund-raising and other activities. Once terrorists master the leading technology of cyber attacks, it is entirely possible to cause heavy casualties. This is the "cyber 911" or "cyber Pearl Harbor" incident that senior American officials have been warning about.

In recent years, the US military and intelligence departments have vigorously developed cyber attack weapons, which has increased the risk of the proliferation of cyber weapons.

Be wary of the integration of cyber attacks with nuclear disasters and terrorism.

The United States regards cyber security, nuclear deterrence and counter-terrorism as a "trinity" national strategy, but the result is not satisfactory, but there are bad signs of the convergence of the three major risks. Although there are many reasons for this, the "law of the jungle", double standards and hegemonic thinking that it has been pursuing are hard to escape. From the "Shenzhen" virus to the release of the "eternal blue" weapon, it undoubtedly gives terrorists technical guidance and demonstration effect, and combating cyber terrorism has become a common difficulty for human society. To find a solution, we should not only devote ourselves to the difficult process of destroying nuclear weapons, but also strictly control the uncontrolled implementation of cyber attacks and prevent the creation of a breeding ground for terrorism.

Regarding the lessons that should be learned from the cyber attack on India’s nuclear power plant, the focus is on safety culture. The Hague Communiqué in 2014 also listed nuclear safety culture as the first of the three pillars of nuclear safety. The Nuclear Regulatory Commission (NRC) of the United States has put forward guidelines to its operators for human resources development and performance evaluation to improve the network security of nuclear power plants. The National Nuclear Military Administration (NNSA) of the United States has incorporated network security into its security assessment, technical exchange and training plan. The United States has also cooperated with the International Atomic Energy Agency (IAEA) to develop a network security training course for nuclear power plant operators; The International Atomic Energy Agency has also published a technical guide on computer security, and has also held a network security course for nuclear power plant operators for the first time. Organizations such as the World Nuclear Safety Association and the World Association of Nuclear Operators can also share information on best practices.

Despite such efforts, it is not enough. Although the lack of safety culture needs to be solved urgently, the harm of jungle culture is even greater, which is the real catalyst for the integration of cyber attacks, nuclear disasters and terrorism. The nuclear explosion in Hiroshima and Nagasaki in 1945 should not be forgotten. In 1986, the Chernobyl nuclear power plant exploded, and the radiation pollution was 100 times that of the atomic bomb explosion in Hiroshima, Japan. The Fukushima incident in 2011 shocked the whole world, and more than 200,000 people were directly implicated. Eight years later, the impact has not been completely eliminated.

To this end, in the face of cyber attacks on India’s nuclear facilities and concerns about cyber terrorism, we need to warn again: First, cyberspace is interconnected, and no one can be immune to it. The shortcomings of others may be the springboard to attack you; Second, cyber attacks on nuclear facilities are fundamentally different from those in Hiroshima and Nagasaki, and it is impossible to enjoy the fruits of nuclear deterrence without suffering from nuclear explosions after dropping nuclear bombs; Third, human society must abandon the "jungle law" and firmly establish a new culture of "cyberspace destiny community" in order to make cyberspace a common well-being.

(The author is the executive deputy director of the Anti-Terrorism and Cyber Security Governance Committee of the China Police Law Research Association)

    March 22nd, 2024 is the 32nd World Water Day, and March 22nd-28th is the 37th China Water Week. On the occasion of World Water Day on March 22nd, Chongqing Water Supply Co., Ltd. (hereinafter referred to as "Municipal Water Supply Company") held a series of public open days of World Water Day in 2024 with the theme of "giving priority to water conservation and promoting high-quality development".

    "Please come in" and "Go in" to promote water conservation and protection.

    On the afternoon of March 20th, the Municipal Water Supply Company launched the theme activity of "Persisting in saving water and giving priority to promoting high-quality development". User representatives from 11 enterprises and institutions, including Chongqing University, Sichuan International Studies University, Chongqing Nankai Middle School, the First Affiliated Hospital of PLA Army Medical University (Southwest Hospital), Yubei Road Street in Shapingba District, Chongqing Ronghui Hot Spring Industry Development Co., Ltd., were invited to walk into Shapingba Waterworks of the municipal water supply company, and visit the facilities in the plant, such as distribution wells, sedimentation tanks, V-type filters, sodium hypochlorite storage tanks, clean pools, secondary pump houses, etc., to learn about the technological process of making water from tap water.

    "By looking at the technological process of tap water production on the spot, I can understand the water quality guarantee measures and water supply service system of the municipal tap water company, which makes me more assured about the safety of drinking water." Mr. Wen, representative of Chongqing Ronghui Hot Spring Industry Development Co., Ltd. said.

    "Shapingba Water Plant has been put into operation since 1958 and has a history of 65 years. Since the establishment of the factory, it has closely followed the trend of scientific and technological innovation and industry development, effectively improved the city’s water supply capacity, and met the people’s demand for high-quality and healthy life. " Man Long, a member of the production department of Shapingba Waterworks, said that the current water supply capacity of the Waterworks is 200,000 m3/d, serving more than 1 million people.

    It is understood that in order to let more people know about the production process of tap water and cultivate the awareness of cherishing water resources, the Municipal Water Supply Company will also organize a "tap water school" activity, and the staff of the water plant will go into Renhe Street Primary School, Yucai Experimental School, Ertang Primary School in Sha District and Chongqing Business School to give lectures on tap water science.

    At the same time, Yuzhong District Water Plant, Heshang Shanshui Plant, Wellhead Water Plant and Fengshouba Water Plant under the Municipal Water Supply Company will carry out water supply business consultation, water quality knowledge publicity, soliciting opinions and suggestions, voluntary maintenance and other activities during World Water Day and China Water Week, so as to popularize the "Regulations on Urban Water Supply and Water Saving in Chongqing" and the knowledge of water saving and water use, and fully promote the establishment of "National Water-saving City".

    The level of water resources management has been further improved through the empowerment of digital intelligence.

    It is understood that since the expansion and transformation of Shapingba Waterworks in 2006, although some automation systems have been built, they have been in operation for 16 years due to imperfect functions at that time. In 2021, under the unified deployment of Chongqing Water Group, the municipal water supply company took the lead in carrying out the pilot demonstration construction of smart water plant in Shapingba Water Plant, mainly including the renovation of automation equipment and the pilot demonstration project of smart water plant (construction of transportation management platform).

    "This transformation completed the update of automatic control and monitoring equipment, and at the same time transformed the network to form an industrial control ring network, which improved the stability of the network and transmission, and re-established a set of SCADA control system." Na Xin, deputy secretary of the Party Committee and general manager of the Municipal Water Supply Company, said that after the transformation, the functions of remote one-step start-stop and automatic sludge discharge of the unit were realized, and most of the equipment was remotely controlled and monitored, and three advanced process controls were realized: intelligent dosing, intelligent chlorination and intelligent backwashing of the filter.

    According to reports, the intelligent transportation management platform enables operators to complete all-round monitoring of equipment; The 3D visual modeling of the platform can intuitively show the specific information of the main factory’s processes, pipelines and equipment, which is convenient for personnel to understand and master relevant business knowledge. At the same time, the platform can also realize the management functions of production data, equipment, work orders, videos, alarms and reports, improve the level of digital management and help digital transformation.

    Na Xin said that the smart water plant project of Shapingba Water Plant, as a pilot demonstration project of smart water plant of the municipal water supply company, has promoted the steady development of Shapingba Water Plant from "digitalization" to "intelligence". After the implementation of the project, the production, operation and management of Shapingba Water Plant have been greatly improved. (Wang Cailing)

Chongqing Water Supply Company launched the theme activity of "Persisting in saving water and giving priority to promoting high-quality development". Wang cailing

Representative signature. Wang cailing

Represents knowledge of water saving. Wang cailing

Na Xin (first from left), deputy secretary of the Party Committee and general manager of the Municipal Water Supply Company, introduced the digital construction of Shapingba Waterworks. Wang cailing

Visit the sedimentation tank. Wang cailing

Sedimentation tank Wang cailing

Intelligent dispatching center. Wang cailing

　　Cctv news: "laughing gas", the scientific name is nitrous oxide. It is named "laughing gas" because it has a slight anesthetic effect and can make people laugh. In March this year, the police in Changchun, Jilin Province cracked a case of illegally operating "laughing gas". Recently (April 19th), the suspect Chen Mou was transferred to the court.

　　At the beginning of January this year, the police of Nanhu Road Police Station of Chaoyang Branch of Changchun Public Security Bureau received an alarm from a middle school student’s parents that his son suddenly disappeared, and the police quickly dispatched police to help find it. The next day, the police found the missing child in a bathing center.

　　After careful inquiry, the police found that the child bought "laughing gas" from Chen Mou, who works in a bar, and smoked it.

　　Subsequently, the police immediately set up a task force to carry out investigation. After information screening and visits, on January 28th this year, the police arrested the suspect Chen Mou.

　　Chen Mou, the suspect, confessed that he bought a lot of goods from the south and transported them to his rental point through logistics. Then Chen Mou sold "laughing gas" in WeChat friends circle and bars, mainly targeting teenagers. From the beginning of October to the end of December last year, the sales of "laughing gas" in Chen Mou reached more than 200,000 yuan. At present, the suspect Chen Mou has been transferred to court by the police.

　　It is understood that the scientific name of "laughing gas" is nitrous oxide. Medically, it is often used in combination with oxygen as an anesthetic to achieve analgesic effect; But smoking "laughing gas" is very harmful to human body.

　　On April 17th, the reporter learned from the FAST Operation and Development Center of the National Astronomical Observatory that more than 900 new pulsars have been discovered by the 500-meter spherical radio telescope (FAST) known as the "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)".

　　Produce a series of world-class achievements in the fields of the origin of fast radio bursts and gravitational wave detection; Independent research and development of receiver core components is expected to go abroad; FAST core array construction is ready to go … …

　　Staring at the starry sky, I kept walking. "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" is constantly providing China wisdom to the world astronomy and China technology to the global engineering community.

　　Frequent achievements

　　"Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" is a well-known national weapon. In order to "produce early results, produce more results, produce good results and produce great results", China scientists constantly "challenge the limits of cognition and technology" and polish their profound "eyes" with "Creation by China".

On April 17th, the reporter got news from the FAST Operation and Development Center of the National Astronomical Observatory of the Chinese Academy of Sciences that the number of new pulsars discovered by the 500-meter spherical radio telescope (FAST), known as the "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)", exceeded 900. Xinhua News Agency issued Liu Xu Lu Yuhan’s establishment

　　Up to now, Five-hundred-meter Aperture Spherical Radio Telescope (FAST) has discovered more than 900 new pulsars, including at least 170 millisecond pulsars, 120 binary pulsars and 80 faint occasional pulsars.

　　"We are expanding the cognitive limits of human beings to the universe." Han Jinlin, head of the galactic plane Pulsar Survey Project of the National Astronomical Observatory, said. In the 50 years from the discovery of the first pulsar by humans to the discovery of the first pulsar by FAST, less than 3,000 pulsars have been discovered in the world.

　　On October 10th, 2017, Five-hundred-meter Aperture Spherical Radio Telescope (FAST) announced the discovery of six new pulsars, achieving a "zero breakthrough". This is the first time that China has discovered pulsars with its own independently developed radio telescope.

　　At present, more than 900 new pulsars have been discovered by Five-hundred-meter Aperture Spherical Radio Telescope (FAST), which is more than three times the total number of pulsars discovered by other telescopes at the same time in the world.

　　Among them, compared with the normal pulsars, the radiation flux density of 80 faint occasional pulsars is one order of magnitude lower, and the lowest one has reached the submicrocentric order.

　　In Han Jinlin’s view, the study of these accidental pulsars is of great significance for understanding how many dense neutron star wrecks are formed after the death of stars in the Milky Way and revealing the unknown physical process of pulse radiation.

　　Han Jinlin told reporters that if searching for pulsars is compared to picking fruits, all the pulsars discovered before are close to the ground and easy to "pick", while the more than 900 new pulsars discovered by Five-hundred-meter Aperture Spherical Radio Telescope (FAST) are farther away or more difficult to pick.

　　Because each pulsar has its own special pulse and stable rotation frequency, they are equivalent to the "lighthouse" with unique signal marks in the universe. If the Interstellar can be realized in the future, these pulsars will provide "navigation" for human beings to travel in the vast universe.

　　"We accurately measure the coordinates of pulsars in space, and monitor the phases and corresponding positional relationships of multiple pulsar signals during the journey, so that humans will not get lost in interstellar travel." Han Jinlin said.

Panorama of "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" taken on February 26th, 2024 (panoramic picture of UAV, taken during maintenance). Xinhua News Agency reporter Ou Dongyu photo

　　It is the first time to observe the "pulse" of black hole in radio band, detect the key evidence of the existence of nanohertz gravitational wave, and detect and construct the world’s largest neutral hydrogen galaxy sample … … In recent years, "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" has made China contributions to exploring the mysteries of the universe.

　　In the face of the unknown and the future, human destiny is shared. From the moment it was born, "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" shouldered the mission.

　　Sun Chun, the measurement and control engineer of Five-hundred-meter Aperture Spherical Radio Telescope (FAST), introduced that since it was officially opened to the global scientific community on March 31st, 2021, Five-hundred-meter Aperture Spherical Radio Telescope (FAST) has helped research teams from 15 countries including the United States, the Netherlands and Australia to carry out observation for nearly 900 hours, covering many fields such as scientific target drift scanning survey, neutral hydrogen galaxy survey, galaxy polarization survey, pulsar time measurement, and rapid radio burst observation.

　　In the foreseeable future, "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" will bring more new perspectives for the international astronomical community to continue to explore the universe and try to find the unknown, and make greater contributions to leading mankind to break through the new field of cognition.

　　Innovation is not limited.

　　"I thought it would be revised seven or eight times, but I didn’t expect the performance of the first edition to reach the world advanced level." Chai Xiaoming, a senior engineer at the National Astronomical Observatory of the Chinese Academy of Sciences, introduced to the reporter a low-noise amplifier with a silver-plated shell and only the size of an organ. It was hard to hide his excitement in his speech.

　　Low noise amplifier is the core component of Five-hundred-meter Aperture Spherical Radio Telescope (FAST) receiver, which was imported before.

　　In order to solve the problem of "stuck neck" and master the key technology in their own hands, Chai Xiaoming’s team spent nearly two years independently developing this high-performance domestic low-noise amplifier.

Panorama of "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" taken on February 26th, 2024 (panoramic picture of UAV, taken during maintenance). Xinhua News Agency reporter Ou Dongyu photo

　　Once the prototype was launched, it attracted the attention of the international astronomical community. The BINGO project in Brazil first proposed the willingness to cooperate in bulk purchase to the FAST Operation and Development Center.

　　As the largest and most sensitive single-aperture spherical radio telescope in the world, "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" has stimulated many special technical requirements, which requires China scientists to give full play to their subjective initiative and creativity, and to optimize and upgrade by constantly "challenging the cognitive and technical limits" and constantly "discovering and solving problems".

　　There is no shortcut to innovation, only dare to climb.

　　"No one told you what to do, and no one was sure that his own method would work." Jiang Peng, executive deputy director and chief engineer of FAST Operation and Development Center, said that the difficult research of "trial and error, failure and courage" runs through almost every link of FAST construction stage.

　　In order to solve the problem of cable fatigue, Jiang Peng led a group of young people through nearly 100 failures and successfully supported the "retina" of "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)".

The "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" feed cabin (photo of UAV, taken during maintenance) taken on February 26th, 2024. Xinhua News Agency reporter Ou Dongyu photo

　　In order to develop a new control system, Sun Jinghai, director of the Measurement and Control Engineering Department of FAST Operation and Development Center, burned the midnight oil to the east for countless times and almost rewritten all the core algorithm codes.

　　In order to solve the problem of electromagnetic interference in substations, Gan Hengqian, director of the Electronic and Electrical Engineering Department of FAST Operation and Development Center, invented &hellip, a high-voltage filter matching with Five-hundred-meter Aperture Spherical Radio Telescope (FAST), after nearly two years of exploration and testing. …

　　Only in the construction stage, "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" won important scientific and technological awards in more than ten fields, such as steel structure, automation industry, machinery industry, surveying and mapping geographic information technology, and electromagnetic compatibility research and development.

Panorama of "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" taken on February 26th, 2024 (photo of UAV, taken during maintenance). Xinhua News Agency reporter Ou Dongyu photo

　　"Eye of the Sky" asks the sky, and there is no end. Jiang Peng said frankly that if FAST is only regarded as a telescope and a monitoring device, it has reached the standard now. However, to maintain the leading position of FAST in the world, our innovation cannot stop, and we will do our best to make FAST more stable and efficient.

　　At present, the annual observation time of FAST is stable at about 5,300 hours, which plays an important supporting role in continuously outputting scientific research results.

　　Compete for the future

　　Explore the sky and decipher the stars. "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" has never stopped innovating.

　　"Astronomy is extremely romantic, because it studies the sea of stars of human beings. Astronomy is also extremely cruel, because international competition is extremely fierce, and once it is relaxed, it will lose its leading position. " Jiang Peng said.

　　Looking around the world, many radio telescope arrays, such as SKA, are under construction.

Five-hundred-meter Aperture Spherical Radio Telescope (FAST) measuring pier photographed by infrared camera on February 27th, 2024 (photographed during maintenance). Xinhua News Agency reporter Ou Dongyu photo

　　"Once these telescopes are put into operation, ‘ Five-hundred-meter Aperture Spherical Radio Telescope (FAST) ’ Will face enormous challenges. " Jiang Peng said, "If we relax a little, China astronomers may ‘ Lost ’ The forefront of the radio band field of vision. "

　　The reporter recently walked into the core area of "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" and saw on a hill less than 3 kilometers away from "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" that the excavator was working intensively, and the original jagged hill top with miscellaneous trees had been leveled and compacted.

　　"We plan to use the excellent electromagnetic wave environment within 5 kilometers around FAST in the next five years to build 20 to 30 fully movable radio telescopes with a diameter of 40 meters, and form a comprehensive aperture array with FAST, that is, the FAST core array." Jiang Peng told reporters that a 40-meter-class fully movable radio telescope will be built on the working hill within this year.

　　"By ‘ Five-hundred-meter Aperture Spherical Radio Telescope (FAST) ’ Observing the universe is like using ‘ Thick-headed pencil ’ If the core array is completed and put into use, it is equivalent to using high-resolution ‘ Digital camera ’ Shoot the distant stars. " Jiang Peng introduced that once the core array is completed, it will greatly improve the vision of "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" and let "‘ Five-hundred-meter Aperture Spherical Radio Telescope (FAST) ’ Not only can you see far, but you can also see clearly. "

Jiang Peng (left), executive deputy director and chief engineer of FAST Operation and Development Center, observed the equipment operation in the main control room (photo taken on March 20, 2024). Xinhua News Agency reporter Liu Xushe

　　According to AARON Li, director of the Structural and Mechanical Engineering Department of FAST Operation and Development Center, FAST Core Array will expand the existing scientific research fields, especially play an important role in extreme temporary sources such as gravitational wave events, fast radio bursts, gamma ray bursts, supernovae and black hole tidal disintegration events.

　　In addition to astrophysical research, FAST core array is expected to play a huge role in the field of deep space exploration, such as near-earth object early warning, space micro-target detection, deep space satellite communication and control, ionospheric characteristics measurement, pulsar time reference, etc., which can play a very important strategic support role for the development of China’s aerospace field.

　　Jiang Peng said: "In order to keep China’s radio astronomy power internationally advanced, we will accelerate the climb from a new starting point and lead the team to explore new scientific frontiers."

　　Reporter: Zhao Xinbing, Ou Dongqu, Pan Dexin

　　Video reporter: Ou Dongqu, Yang Yanbin, Liu Qinbing and Chen Gan

　　Poster design: Sun Yao

　　Editor: Jindi, Ringo, Qi Wenjuan, Liu Yongzhen, Lin Fanjing, Hou Bangxing, Cheng Hao

　　Coordinator: Huang Xiaoxi and He Yuxin

　　【Pacific auto network tire channel】 This issue of Xiaobian will introduce you to sports tires. The biggest feature of sports tires is high performance and excellent handling performance. There are many sports tires on the market, and the more choices car owners face when changing tires, the more tangled they tend to be. The average car owner will buy according to several aspects: brand, price, original tires and friends’ introduction, etc. These are good methods, but the most important thing is that the car mainly knows the tires and knows what kind of tires to choose. Therefore, Xiaobian will introduce the mainstream representative sports tires on the market, so that everyone can understand them first and then make a choice.　　

　 　In order to facilitate your reading, please first understand the following parameters:

　　Hub diameterAlso called rim diameter, it refers to the size of the tire suitable for mounting on the hub.load index, refers to the maximum upper limit load of the tire.speed, refers to the maximum upper limit speed of the tire.figure, refers to the structure of tread grain, mainly including symmetry, asymmetry and single direction.abrasionindex, is the main measure of tire tread wear performance and service life of the logo, the higher the score, the more wear-resistant.Traction index, which is a measure of the adhesion between tires and the ground, is divided into four levels: AA, A, B and C, with AA being the highest.Heat generation index, is the ability of tire to resist heat generation, which is related to the high-speed performance of tire. It is divided into three levels: A, B and C, with A being the best. (Please click for more details.This > > >)

　　　 What is a sports tire? Sports Performance The tread groove of the tire is relatively wide and the tread blocks are relatively large, in order to have good drainage performance and strong grip on the ground, but this kind of tire has obvious shortcomings, such as loud noise and poor comfort. Sports tires and comfortable tires are two extremes. To pursue the sports performance of tires, we must give up the comfort performance, and vice versa. However, there are also some tires that can achieve comfortable and well-balanced movement, such as Pirelli’s P Zero Rosso and Goodyear Sanneng.

You can click the following link to jump directly to the tire brand information you want to know:

　●　Korean brand:High performance/handling/safety

The use price range of compact, medium-sized and medium-sized cars with 16-19 inch wheels: 760-1600 yuan.

　 Korean sports tires are represented by Kumho Escta LE Sport KU39C and Han Tai Ventus S1 Evo K107, which are the representatives of these two brands. KU39C can keep the vehicle in excellent handling at high speed by dispersing the contact pressure. There are three large grooves in the center of the tread, which can improve the drainage ability of the tire, improve the handling safety and braking performance, and strengthen the safety of driving in rainy days when driving on wet roads.

　　　 Han Tai K107The interior is composed of high-density and high-strength steel wires and cords, and the tread also adopts the pattern design of 3D curve diversity. Moreover, through the latest computer simulation technology, the best dynamic grounding shape and stress state in various situations are obtained. Combined with the silicon-containing formula of HDS, HDBS can effectively shorten the braking distance of cars in sunny and rainy days, improve the driving stability, be more conducive to driving safety and save fuel.

　　　 In terms of wheel hub specifications, Kumho KU39C is 19 inches larger than Han Tai K107, and KU39C has only three dimensions of 16, 17 and 18 inches, while K107 has four dimensions of 16, 17, 18 and 19 inches. The range of K107 adaptive models is larger than that of KU39C, and its positioning is also higher than that of KU39C. However, the quotations on these two Taobao are not much different, or even the same. Both are Korean brands. How to choose them depends on consumers’ preferences.

●　Japanese brand: ultra-high performance/Handling/safety/comfort

Compact, medium-sized and medium-sized cars suitable for 14-20-inch wheels: 630-4400 yuan.

　　The representatives of Japanese sports tires are Deng Lupu DIRZZA DZ101 and Bridgestone POTENZA RE050. DIRZZA DZ101 is a sports tire in Deng Lupu, which contains a unique sports compound with Direzza pattern, and has strong grip and braking performance in dry and wet areas. DZ101 uses low noise pattern and mixed belt layer, which improves the quietness and comfort, and the wear resistance is also acceptable.

　　　 Bridgestone POTENZA RE050 is an ultra-high performance sports tire, which has ultra-high wet and dry road performance, and the outer tread is specially designed for dry road performance, ensuring the maximum grip and road adhesion. The inner pattern can improve the wet road performance to the greatest extent, and has good drainage effect, which can also provide excellent wet road performance and braking performance even at high speed. In addition, the design and layout of patterns suppress road noise and ensure comfortable driving. It is a tire with high ultimate performance and excellent handling performance.

　　　These two kinds of sports tire wheels have a wide range of adaptation, ranging from 15 to 20 inches, but there are still some differences. Deng Lupu DZ101 wheels have a range of adaptation from 15 to 19 inches, with a total of five specifications; Bridgestone RE050 has a range of 16-20 inches, with a total of 5 specifications. There is no 20-inch large size in Deng Lupu, while Bridgestone focuses on 16-20-inch large size, which is higher in positioning than DZ101 in Deng Lupu, and the price is quite different.

●　European and American brands:High performance/handling

Compact, medium-sized and medium-sized cars suitable for 16-22-inch wheels: 650-6600 yuan.

　　　 Representatives of sports tires in Europe and America include Goodyear Eagle F1 Directional 5, ContiSportContact 3, Pirelli P Zero and Michelin Pilot Sport 3. The tread of Goodyear Eagle F1 Directional 5 integrates three technologies: central annular rib, fully enclosed shoulder and polymer formula. The annular rib in the center of the tread improves the steering response ability; Shoulders on both sides are fully enclosed to reduce the noise generated by the tire during driving; The optimized tire carcass section increases the ground contact area, and finally improves the grip.

　　　　The most important feature of ContiSportContact 3 is its excellent steering accuracy. CSC 3 can maintain excellent road grip for vehicles when they are driving at high speed, undergoing fierce control or under great force on tires. Its asymmetric rib are used to absorb that longitudinal force generate during braking, and the tread ribs have high longitudinal hardness, while the continuous rib can absorb the longitudinal force, and when steering rapidly, the external forces generate high unilateral forces on the tread ribs.

　　　 Pirelli P zero is positioned as the original tire of the highest performance car and high horsepower model. itThree solid longitudinal rib patterns are adopted, and the hard pattern blocks on the shoulder can still have high lateral rigidity and steering response at high speed, which is better improved.racing carControl performance of. The three wide longitudinal grooves on the tread have the ability of rapid drainage and improve the safety and control ability of wetland driving.It adopts a new nano formula to give full play to the tire’s grip and stability to the best level.

　　　 Michelin Pilot Sport 3 is a high-performance and strong handling tire, which pays more attention to driving pleasure and handling performance. PS3 can make the vehicle achieve the effects of stable acceleration, high-speed cornering and shorter braking distance. As the silicon-containing formula is added to the tire, the shoulder is chamfered, which reduces the rolling resistance and saves fuel.

　　　 Ma brand CSC3 and Pirelli P Zero adapt to a wide range of wheels, the largest of which is 22 inches. However, the largest Goodyear D5 and Michelin PS3 are only 20 inches. Compared with the first two, the adaptation range is relatively small. Although the range of Michelin PS3 adaptive hub is only 15-19 inches, its positioning is higher than that of Goodyear D5, so the price is also higher. Ma brand CSC3 and Pirelli P Zero, as representatives of first-line brands, are up to 22 inches in size, so their prices are also very high, with the highest asking price of 6600 yuan.

If you want to know more about tires, please click on the related links below:

●　Korean brand:

1. Kumho:Ecsta LE Sport KU39C High Performance/Control

Suitable for compact cars and medium-sized cars with 16-18 inches wheels. Price range: 800-1600 yuan.

　　KU39C is a high-end sports tire positioned by Kumho, which can keep the vehicle in excellent handling at high speed by dispersing the contact pressure. The tread design of KU39C has three large centerline grooves, which can improve the drainage capacity, improve the handling safety and braking performance, and enhance the driving safety in rainy days.

　 　 The wear resistance index of KU39C is 280, and its wear resistance is average, but its traction index reaches the highest AA level, and its speed can reach the highest Y level (300km/h). KU39ChubThere are three sizes of 16, 17 and 18 inches, and now the main compact and medium-sized cars are suitable for this tire.

　 The mainstream specifications of KU39C market are as follows225/55 R16、235/45 R17and245/45 R18, the main adaptive models areAudi A4L、Volkswagen CCandRegalWait.

　 Editorial recommendation index：★★☆☆☆

　 Recommended reason:KU39C is an ultra-high performance sports tire in Jinhu, and its handling performance is not bad. However, as a third-line brand, its brand awareness and performance are still far behind those of first-and second-line brands, but it is better than its lower price and higher cost performance.

2. Hankook Tire: Ventus S1 Evo K107 Control/Safety

Compact, medium-sized and medium-sized cars suitable for 16-19 inch wheels: 760-1600 yuan.

　　 Ventus S1, Han Tai　Evo　K107 is a tire with excellent handling performance and high safety performance. Its interior is composed of high-density and high-strength steel wires and cords, and the tread also adopts the pattern design with various 3D curves. Moreover, through the latest computer simulation technology, the best dynamic grounding shape and stress state in various situations are obtained. With the silicon-containing formula of HDS, it can effectively shorten the braking distance of the car in sunny and rainy days, improve the driving stability, be more conducive to driving safety and save fuel consumption to a certain extent.

　 　 There are four sizes of K107 wheels: 16, 17, 18 and 19 inches. Because K107 is a sports tire, most of the wheels with large sizes are imported, and most of them are made in China with small sizes. 19 inches is completely imported, 17 and 18 inches are imported, and only 16 inches is completely made in China.

　　　 The main specifications of K107 are as follows225/55 R16、225/45 R17and225/45 R18Adapted models are concentrated in medium and large high-end luxury cars, includingAudi A8、Audi TT、Bmw Z4andMercedes-benz e-classWait.

　 Editorial recommendation index：★★★☆☆

　 Recommended reason:K107 is also the main sports tire in Han Tai, its sports performance is better than that of KU39C, and its price is almost the same as that of KU39C, and the small size is cheaper than it. The price will not be too high, which is acceptable to many consumers.

●　Japanese brands:

1.Deng Lupu DIRZADZ101 Control/Safety

Compact, medium-sized and medium-sized cars suitable for 15-19-inch wheels: 630-1980 yuan.

　　DIRZZA DZ101, known as a street fighter, is a high-performance sports tire in Deng Lupu. It is a tire with single guide pattern. It contains the unique sports composition of Direzza pattern, and has strong dry and wet grip. This composite is an organic combination of "highly filled carbon black particles" and "silicon oxide", which effectively expands the ground contact area and is easier to generate heat, thus improving the grip. They can make the tire have excellent grip and braking performance even at low temperature.

　　DZ101 uses low noise patterns and mixed belts to improve the quietness and comfort. The widened main longitudinal grain and the lengthened diagonal branch grain not only reduce the eccentric wear, but also play an excellent drainage performance. Direzza’s pattern effectively makes the wear distribution of the table top uniform and reduces the eccentric wear, whether in normal driving state or in sports driving state. Through the simulated skid experiment, it is verified that the design of the main groove and the secondary groove of DZ101 completely subverts the wet performance that people have difficulty in owning sports tires in the past.

　　　　The DZ101 wheel hub has five specifications of 15-19 inches, and the adapted models already include mainstream models, and the smallest 15 inches can be adapted to smaller modified models. It’s just that it has a tire width of 15-17 inches and gives people too few choices.

　　　　 DZ101 mainstream specifications in the market are as follows225/45 R17、225/40 R18and245/35 R19, adapt to the models are mainlyCIVIC、BMW 3 Series、RegalandCamryWait.

　 Editorial recommendation index：★★★★☆

　 Recommended reason:Deng Lupu DZ101 has excellent sports performance. It can be seen from its pattern that its sports performance is not simple. The price of this tire is not expensive, but it is only a few hundred more than the previous two models. The range of wheel hub adaptation is large, and the owners have more choices.

2. Bridgestone POTENZA RE050 ultra-high performance/control

Compact, medium-sized and medium-sized cars suitable for 16-20-inch wheels: 1080-4450 yuan.

　　POTENZA RE050 is a Bridgestone ultra-high performance sports tire, which has ultra-high wet and dry road performance, and the outer tread is specially designed for dry road performance, which ensures the maximum grip and road adhesion, and strongly supports the fast start and high-speed performance. The inner pattern can improve the wet road performance to the greatest extent, and has good drainage effect, which can also provide excellent wet road performance and braking performance even at high speed. In addition, the design and layout of patterns suppress road noise and ensure comfortable driving.

　　RE050, the flagship product of Bridgestone Poztenza series, has excellent extreme performance and high-level handling performance, which has created high-quality tires.

　 　 RE050 has five specifications of 16-20 inches, and there are many choices of tire width and flat ratio to meet the needs of different vehicle wheels. Due to the high-end positioning of RE050, the larger the wheel hub size, the larger its tire width, the smaller the flatness ratio and the more expensive it is.

　　 RE050 mainstream specifications are as follows225/50 R17、255/50 R18and285/35 R19, adapt to the models are mainlyBMW 3 Series、Bmw 5 series、Audi A8L、Mercedes C63andFerrari F430Wait.

　 Editorial recommendation index：★★★★★

　 Recommended reason:Bridgestone Potenza RE050 is a tire with excellent handling performance, excellent linearity and strong grip. Although the price of RE050 is on the high side, it is well controlled, and the noise level is well controlled in the sports tires, which is both expensive and reasonable. Xiaobian strongly recommends it.

●　European and American brands:

1. Goodyear: Eagle F1 Directional 5 High Performance/Sport

Compact, medium-sized and medium-sized cars suitable for 16-20-inch wheels: 800-2060 yuan.

　　　　Goodyear Eagle F1 Directional 5 is a tire with single tread pattern. The tread integrates three technologies: central annular rib, fully enclosed shoulder and polymer formula. This is Goodyear’s SportGrip technology. The central annular rib improves the steering response ability; Shoulders on both sides are fully enclosed to reduce the noise generated by the tire during driving; The optimized tire carcass section increases the ground contact area, and finally improves the grip. This design not only improves the grip, but also reduces the noise, killing two birds with one stone.

　　According to the test, D5′ s lateral grip is stronger than D3′ s, and its handling response is better when changing lines, and there will be no tire ringing or slipping for a long time when hitting the direction at a fast and large angle. This is mainly due to the design of the four main drainage grooves of the tread (to improve the drainage capacity) and the central annular rib (to improve the response ability of line change).

　　　　 D5′ s wear index is 300, which is not too high or too low. For an active high-performance sports tire, it’s ok. One thing we should pay attention to, D5 is a tire with a single guide pattern. What does this mean? When installing, it is necessary to clearly distinguish the direction from the inside and outside, and it is also very troublesome to choose the spare tire. It can only be installed on one side, and another time, we must find another way. Its wheels have five specifications of 16-20 inches, which are mainly suitable for compact, medium-sized and medium-sized cars.

　　　　 D5 mainstream specifications are as follows235/45 R17、255/55 R18and275/45 R20, the adaptive models areMercedes-benz e-class、Regal GS、Audi A8LandChevrolet CamaroWait a minute.

　 Editorial recommendation index：★★★★☆

　 Recommended reason:Although the handling performance of Goodyear D5 is not as good as that of F1 asymmetric 2nd generation, its handling performance is good. Mainly because its price is not too high, car owners who are not particularly demanding on handling can choose it.

2. Horse brand: ContiSportContaCt 3 ultra-high performance/control

Compact, medium-sized and medium-sized cars suitable for 16-22 inches (except 21 inches) wheels: 739-5140 yuan.

　　ContiSportContact 3 is a horse brand tire specially assembled for high-performance sports cars. Its most important feature is excellent steering accuracy. CSC3 can maintain excellent road grip for vehicles when they are driving at high speed, maneuvering sharply or the tires are under great force. How is its grip performance achieved?

　　In fact, the asymmetric tread ribs of CSC3 are used to absorb the longitudinal force generated during braking. The tread ribs have high longitudinal hardness, and the continuous tread ribs can absorb the longitudinal force. When steering rapidly, the external force on the tread ribs is high. Asymmetric tread rib design can stabilize ribs and reduce deformation under these forces, and the steering accuracy is higher.

　　Except on dry roads, it provides excellent braking performance and steering accuracy and shortens braking distance. On the wet road surface, the unique groove improves the drainage performance and provides excellent anti-skid performance.

　　　　 The specifications of CSC3 wheel hub are 16-22 inches (except 21 inches), and the models are compact, medium and large, and luxury cars, while the 22-inch wheel hub is suitable for more modified cars. Its wear index is 280, and its wear resistance is average, but its traction index reaches the highest AA level, and its handling performance is very strong.

　　　 The specifications of CSC3 mainstream are as follows245/45 R17、245/40 R18and255/45 ZR19And so on, the adaptive models areMercedes-benz e-class、S80LandPanameraWait.

　 Editorial recommendation index：★★★★☆

　 Recommended reason:CSC3 is the main sports tire of Mapai. It can exert excellent handling performance, and its wide pattern blocks can tell that the sports performance is high. It’s just that the wear resistance of this kind of tire is average, and as a first-line tire brand, Ma brand has a relatively high price.

3.Pirelli:P zero ultra-high performance/handling/comfort

Suitable for medium-sized and large-sized cars with 17-22-inch wheels. Price: 1280-6600 yuan.

　　P zero is a milestone of Pirelli products, and it is positioned as the original tire of the highest performance car and high horsepower model. it is458andLamborghini AventadorWaiting for the original tires of the super sports car. P zero adopts three solid longitudinal rib patterns, and the hard pattern blocks on the shoulder can still have high lateral rigidity and steering response at high speed, which is better improved.racing carControl performance of. The three wide longitudinal grooves on the tread have the ability of rapid drainage and improve the safety and control ability of wetland driving.

　　P zero adopts asymmetric tread pattern, which can effectively improve braking and handling performance. At the same time, it uses a new nano-formula to give full play to the tire’s grip and stability to the best level. Its tread contact with the ground is as uniform as the new P7, and its durability is good. Although P zero is an ultra-high performance sports tire, the "S-shaped" groove on the tread can help reduce tire noise, and this design helps to improve driving comfort.

　 　 　There are six sizes of P zero wheels, including 17-22, 21-inch and 22-inch, and its tire width is wide, which is suitable for more super sports car wheels. Its wear index is 220, and its wear resistance is average.

　　　 P zero mainstream specifications are255/35 R19、255/45 R19and295/35 R20, the main adaptation models areAudi A5、Audi A6、Mercedes GLKandFerrari458Wait.

　 Editorial recommendation index：★★★★★

　 Recommended reason:P Zero’s sports performance is recognized as good, and everyone is basically not picky about it, except for its high price. Just a sports car that deserves this kind of tire, the owner will not be there.Meaning that little money.

4.Michelin: Pilot Sport 3 high performance/strong handling/more fuel-efficient.

Compact, medium-sized and medium-sized cars suitable for 15-19-inch wheels: 650-3000 yuan.

　　Pilot Sport 3(PS3) is a Michelin tire with high performance and strong handling, which pays more attention to driving pleasure and handling performance. PS3 can make the vehicle achieve the effects of stable acceleration, high-speed cornering and shorter braking distance. Because the silicon-containing formula is added to the tire and the shoulder is chamfered, the rolling resistance is reduced, and PS3 is more fuel-efficient than PP2.

　 　 The wheel hub specifications of PS3 are biased towards mid-to high-end sports performance models, and the mainstream specifications are 245/45 ZR18. Here, we will explain the meaning of "ZR". In the first issue, we have explained that "Z" stands for high-speed tires. Suitable models for fitting this tire areRegal、Audi A6L、Ferrari 348TSWait. If you really like sports and your car’s wheels have the right specifications, you can consider changing into a PS3.

　 Editorial recommendation index：★★★★☆

　 Recommended reason:PS3 is not Michelin’s best sports tire, but its price and specifications are mainstream, and it is more accepted by the public than Ploit Supre Sport, but its performance is far from P Zero. However, the price of the PS3 is not high, and many car owners accept it.

　Related links:

Original Han Xiaoni’s guide to Shanghai residents’ life is included in the topic # Time-honored brand 1# Fresh meat moon cake 1.

The "moon cake season" is here again. The surging fresh meat moon cake industry in Shanghai is launching a new round of queuing time competition.

In fact, behind the uproar, Shanghai’s time-honored brands have many "secrets" about fresh meat moon cakes.

Where to start with too much material? Why don’t we start with the story of "Rashomon" between Guangming Village, Changchun and Harbin, the "Big Three" on Huaihai Road?

one

A long queue of fresh meat moon cakes in Guangming Village

Aunt, uncle and uncle came prepared.

I brought all the benches.

The Guangming Village on Huaihai Road is still in the same style this year, and the long queue to buy fresh moon cakes these days has been lined up to "Popeyes".

In fact, as early as late August, more than a month before the Mid-Autumn Festival, we found that this team "re-emerged".

A pot of 65 moon cakes and five boilers started in unison. In the afternoon of the working day, the long queue to buy moon cakes still blocked the alley next door.

An uncle in a white Polo shirt and a briefcase with one shoulder just squeezed out of the crowd and carried four boxes of fresh meat moon cakes in his hand.

"Allah’s age is more meticulous (careful), and I came to make a sample yesterday. I have to wait for an hour and a half in the morning, and the salesperson said that there will be fewer people in the next half day (afternoon). "

"I came over today to see that the team was quite long, and I bought it in less than 10 minutes."

"In fact, it is the most cost-effective to buy now, and you don’t suffer from queuing." My uncle is happy to share his "wrong peak" buying experience.

As early as late August,

Many customers came.

Cuofeng bought moon cakes.

"My name is lu, lu wan district. I am old Luwan, and buying this (moon cake) is nostalgic. " He said.

It turns out that the 73-year-old Lao Lu was born in Le ‘anfang opposite Guangming Village.

He came here to buy four boxes of moon cakes because there are four brothers and sisters, and he is going to send a box to the family.

Fresh meat moon cakes on Shanghai beach can be roughly divided into boiler pie and oven pie.

Lao Luting boiler pie. He said: "Now most of them are baked in the oven, and the baked grains are round, like steamed bread. Biting down is all flour, and it is stiff, indicating that the pastry is not done well. "

The fresh meat moon cakes in Guangming Village are baked in the boiler. "Its skin is crispy, and when you hold it in your hand, it looks like snowflakes layer by layer."

Fresh meat moon cake in Guangming Village

Belong to the "boiler school"

Both sides of the moon cake are flat.

I have bought it for many years, and Lao Lu even knows the "inheritance" of his mooncake skills clearly.

"It turned out that an old master was doing it himself in the first generation, and it was always good to eat the minced meat."

"We belong to the mouth is a knot in one’s heart. After the old master retired two years ago, we found that there was sugar in the stuffing, which was not delicious. Fortunately, it was changed back immediately after one year. "

"Now are two aunts in the roast. However, I think the master’s’ True Sutra’ has basically been handed down. "

Auntie used a pan.

On-site baking of fresh meat moon cakes

Has been "true" by the master.

two

In Shanghai’s "Fresh Meat Moon Cake List" commented by the public, Guangming Village currently tops the list and stands at the top of the contempt chain.

However, in the middle section of Huaihai Road (), which is characterized by cakes and cooked food and has successfully developed a "earthy taste", other time-honored brands are not "vegetarian".

Bright Village is not the only one selling fresh meat moon cakes.

Taikang, which has set up a baking counter for local products all over the country, and Laodafang in the South District, which has just opened its store, are "away from home", but the price is set at "proud", and one fresh meat moon cake is sold in 6 yuan.

Changchun Food Store and Laodachang are "old lands", and the price of fresh meat moon cakes is the same as that of Guangming Village, so they sell one from 5 yuan.

Laodachang is also a "boiler pie", and there is a pan in the shop that is now for sale.

Lao da Chang de fresh meat moon cake

Do it now and sell it now

There are many people who like it.

Although the popularity is not as good as that of Guangming Village, there are people queuing in twos and threes from time to time at the counters shared by Liuxin Egg-yolk Crisp, Barbecued Crisp and Coconut Roll.

In contrast, Changchun treats fresh meat moon cakes more seriously and has set up a special counter.

Its fresh meat moon cakes are usually "oven pie", but near the Mid-Autumn Festival, the variety of traditional boiler baking has recently been added.

Changchun food store

Specially set up a fresh meat moon cake counter.

The poster emphasizes the use of Eisen meat.

Speaking of fresh meat moon cakes, Changchun sighed.

The so-called "thirty years in Hedong, thirty years in Hexi", once upon a time, fresh meat moon cakes in Changchun were the "king of popularity" in this street.

"Allah was originally artificial, baked with a pan of charcoal fire, and began to do it in 1997." Insiders in Changchun said, "There are about ten years in Guang Chen, and Allah has done a good job."

Changchun is now all year round.

Fresh meat moon cakes baked in an oven

Add "Boiler Edition" before Mid-Autumn Festival.

In this regard, insiders of Guangming Village also admit that fresh meat moon cakes in Changchun sold better than them at first.

As for how to catch up with it later, insiders in Guangming Village say:

"One year after the renovation (referring to Changchun), Allah began to overtake. In fact, we were ready before this, and the quality was quite tight. So I rushed out once I had the chance. "

In this regard, Changchun is noncommittal, just saying: "We are ancestors of fresh meat moon cakes." He also revealed that Guangming Village had learned from them in his early years.

three

I heard that the fresh meat moon cakes in Changchun are "ancestors", and Harbin Food Factory laughed.

An old mage who worked in Harbin Food Factory for many years told us: "We first taught Changchun fresh meat moon cakes."

The origin is this:

Harbin and Changchun belong to Shanghai Tobacco Group.

"Changchun was originally just a retail store. They want to diversify and be a’ front shop and back factory’-the workshop upstairs produces moon cakes and then sells them in the shop downstairs. "

Therefore, as a brother unit of the same group, Harbin is duty-bound to teach the skills of making moon cakes.

In Harbin, which started with Russian West Point, fresh meat moon cakes are actually well-founded. Because a few years ago, Gao Qiao Food Factory was merged into Harbin.

Back then, Gao Qiao Food Factory’s fresh meat moon cake was also a famous brand on Huaihai Road.

In 1983, it was reported in Wen Wei Po that Gao Qiao Food Factory on Huaihai Road insisted on supplying fresh meat, moon cakes and other special varieties, which were well received by consumers.

In Wen Wei Po in 1983.

On the products such as fresh meat and moon cakes in Gao Qiao Food Factory

Sent a photo news (right)

There is even a saying that the predecessor of fresh meat moon cakes is Gao Qiao muffins.

Gao Qiao muffin is one of the four famous spots in the ancient town of Gao Qiao, which has a history of one hundred years. Among them, Gao Qiao muffins with fresh meat stuffing are crispy and juicy, which is said to have gradually evolved into fresh meat moon cakes.

Now that Changchun and Guangming Village are leading the way, the old master of Harbin admits: "The apprentice defeated the master."

In this regard, Harbin is also calm: "Their meat stuffing is wrapped on the spot and baked very fresh. Unlike our meat stuffing, it was delivered after being frozen in the factory on Quxi Road. "

"So we thought about it, and our focus is not on fresh meat moon cakes."

The "Big Three" on Huaihai Road have their own opinions about fresh meat moon cakes, which have been interpreted as a "Rashomon" story.

four

Looking at the whole country, Shanghai may be the city that loves fresh meat moon cakes most. Hungry take-away data show that last year, Shanghainese ate 53% of the country’s fresh moon cakes.

When did Shanghainese begin to like fresh meat moon cakes? It is probably impossible to test the age.

However, we can see from the database that as early as 1928, an advertisement for old Yuchang fresh meat moon cakes on Aiduoya Road (now Yan ‘an East Road) was published in Shenbao.

This advertisement in Shenbao, a bus stop at Sinan Road, Huaihai Middle Road, said

Lao Yu Chang de Xiao zhi fresh meat moon cake

"Choose the best ingredients, so it’s delicious."

Regarding the origin of fresh meat moon cakes, the version introduced by the real boss room is that in the past, there was a kind of fresh meat dumplings that was very popular in Soviet-style tea.

Its outer skin is brown and crispy, the middle layer is delicate and crisp, and the inner layer is fresh and firm meat stuffing.

Later, a master "opened his brain wide" and changed the shape and size of fresh meat dumplings, which became fresh meat moon cakes.

Zhen Lao da Fang de fresh meat moon cake

Belong to "oven pie"

There are also many fans.

On September 14th, 1980, Liberation Daily reported that there were 147 units producing moon cakes in Shanghai catering industry that year, among which 127 households produced fresh meat moon cakes.

In Liberation Daily in 1980.

Report on Mid-Autumn Moon Cake

Two years later, Wen Wei Po reported that on the eve of Mid-Autumn Festival, nearly 200 restaurants in this city served fresh meat moon cakes. In order to meet the needs of consumers, the supply of fresh meat moon cakes this year increased by about 50% compared with the previous year.

The supply of stores and output both increased because "fresh moon cakes are crispy in skin, big in stuffing, fresh and bittern in meat, salty and sweet, and have a unique flavor. Generally, they are sold now, baked while cooking, and full of fragrance, which is very popular among consumers."

In 1989, Liberation Daily continued to report that "the sales of sweet moon cakes dropped sharply, but the sales of fresh moon cakes soared."

"Salty moon cakes are the most popular ones, so there are more than 70 shops selling fresh meat moon cakes on the streets of Shanghai this year, and even some fresh meat moon cakes made by big cake stalls are queued, which is in short supply."

In Liberation Daily in 1989

Report on Mid-Autumn Moon Cake

According to the report, fresh meat moon cakes are favored because the tastes of Shanghainese are changing.

"A customer who queued up in front of Yuelaifang Food Store in Putuo District told the reporter: Nowadays, moon cakes are like sugar cakes, which are too sweet and expensive. They are not as good as cheap and good meat moon cakes, which are fresh and fragrant."

By the way, Yue Laifang, who lives in the west of Shanghai, also has a name in the "History of Fresh Meat Mooncakes in Shanghai". Many people believe that fresh meat moon cakes were first sold by Yue Laifang.

It can be seen that over the years, Shanghai people’s preference for fresh meat moon cakes has been increasing day by day and has never been reduced.

five

If we say that the "love and hate" between Guangming Village, Changchun and Harbin on Huaihai Road around fresh meat moon cakes is a story of nearly twenty years.

Then, on Nanjing Road, another famous commercial street in Shanghai, the real old house has been famous for a long time.

Before the Mid-Autumn Festival in 2003

The queue of the real boss’s room is grand

/Shao Jianping photo

As early as 1982, it was reported in the newspaper that the fresh meat moon cakes in the real boss’s room won the first prize in the quality appraisal of moon cakes by catering companies in the city.

In 1986, Xinmin Evening News reported, "The fresh meat moon cakes produced by this store pay attention to the strict control of specifications and quality, and the minced meat is all lean-legged meat. Since its listing, the daily sales volume has reached about 3,000 kilograms. "

In Xinmin Evening News in 1986

A report on the real boss’s house

In 2005, the Jiang Shen Service Herald wrote: "Every year’s’ moon cake season’, there will be amazing all-weather’ long queues’ here, sometimes even winding more than 100 meters!"

However, on Nanjing Road, the real boss has a close competitor-Taikang.

▼

Public comment

Netizens like the mooncakes of the two families.

Compare them.

In 2011, "Morning News" took stock of the "queuing index" of the time-honored fresh meat moon cakes in Shanghai. The two companies are comparable, and the queue time is about 6 hours.

A report in the Morning News in 2011

Inspected the time-honored brands.

"queuing index" of fresh meat moon cakes

What I want to tell the people who eat melons quietly here is that these two food stores with their own fans are actually "a family"-both belong to Taikang Food Co., Ltd.

Some people go to Huaihai Road and Nanjing Road to queue up to buy moon cakes every year, but in the eyes of citizens in the western district, the fresh meat moon cakes in the old house in the western district are the best ones.

The story of the real boss’s house and the old boss’s house in the west end of the country, which was taught by the same family in the early years, has been "eight" before, so we can’t press it here.

The fresh meat moon cakes of these two companies have always been equally famous, ranking almost the same.

We went through the newspaper pile again, and in 1982 and 1986, when the real boss room was reported, the boss room in the west side was also reported.

"At the entrance of Jing ‘an Temple’s’ Western District Old House’, customers often queue up to buy fresh meat moon cakes. An old uncle praised:’ the fresh meat moon cakes here are delicious and keep on selling all year round.’ ….. Near the Mid-Autumn Festival, the business of "the old house in the west side" is better. On September 7th, more than 14,700 fresh meat moon cakes were sold. "

-Xinmin Evening News, September 08, 1982, "The fragrance of cakes is accompanied by the fragrance of osmanthus"

Just like the real boss’s room.

The old house in the west side is also often there.

Appeared in reports about fresh meat moon cakes.

"The special fresh meat moon cakes produced by the old house in the west area of Jing ‘an Temple this year are among the best in the evaluation of the city tobacco and sugar company."

-Xinmin Evening News, September 12, 1986, "Fresh meat moon cakes here are welcomed by customers"

They all say "orange in the south and orange in the north". Last year, our old friend, folk photographer Shou Yousen, saw in Jing ‘an Temple that the fresh meat moon cakes in the old house in the West District were treated in line as usual.

Taikang, who had a long queue on Nanjing Road, opened the counter next to the old house in the west, but it was deserted. .

Seeing Taikang, which is very popular on Nanjing Road.

It’s cold next door to the old house in the west side

Shouyousen sent a circle of friends.

It seems that Shanghainese eat fresh meat moon cakes, which are not only delicious, but also famous and lively.

References:

1. Qiu Wenhan, "Long queues on Nanjing Road only taste Mid-Autumn Festival", Jiefang Daily, September 11, 2019.

2. Tang Ye, Huang Yongdi and Huang Jianjian, "Where are the earliest fresh meat moon cakes? Only Shanghai gourmets know, Jiefang Daily Shangguan News, August 27, 2017.

3. Xu Yanfei, "Shanghainese ate 53% of the fresh moon cakes in China", Morning News, September 13, 2019.

4. Gu Zheng, "For this dough of 4 yuan, some people stand with a backache, and some people are busy until 2 o’clock in the middle of the night", WeChat WeChat official account "Guide to Shanghai Residents’ Life", August 26, 2018.

5. Ji Ming, "Mid-Autumn moon cakes enter the peak of production and sales", Jiefang Daily, September 14, 1980.

6. Ji Ming, "Fresh moon cakes are full of fragrance", Wen Wei Po, September 24, 1982.

7. Sun Weixing, Shi Peining, "The Fragrant Cake Accompanies the Fragrant Osmanthus fragrans", Xinmin Evening News, September 08, 1982.

8. Xu Jingyuan, "The quality of moon cakes in a century-old shop is strictly controlled", Xinmin Evening News, September 3, 1986.

9. Zhou Minglu, "Fresh moon cakes here are popular with customers", Xinmin Evening News, September 12, 1986.

10. Yu Kanghua, "Weak sales in the moon cake market", Jiefang Daily, September 14, 1989.

11. Chen Xiaojun and Chen Haiyan, "Taking stock of" Lailaifeng "food" These shops are always waiting in line! Jiang Shen Service Herald, December 07, 2005.

12. Xu Yun, Mao Yi and Chen Shuyi, "8.5 hours! The queue record of fresh meat moon cakes will be refreshed again, Morning News, September 10, 2011.

－ END －

For more stories about Shanghai, click on the picture below.

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Writing manuscript: Han Xiaoni/Taking photos: Han Xiaoni/

Draw a picture: Erhei/Compile a manuscript: Han Xiaoni/

Write a brush: Chen Dongni/Make a picture: Erhei/

Namwin: Chen is not funny/

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Original title: "Secret History of Fresh Meat Mooncakes in Shanghai Beach"

Read the original text

　　Cctv newsIn Lincang, Yunnan Province, deep in the boundless mountains, there is a 10,000-meter-long tunnel under construction at the construction site of the China-Myanmar International Passage, named "Hongdoushan Tunnel". Because of the special geological conditions, there are 8 kinds of toxic gases in the tunnel, accompanied by high temperature of 40 degrees, water inrush and mud outburst.

　　This is the boundless mountain, which stretches for hundreds of miles, majestic and steep, and the only China-Myanmar international corridor leading to Myanmar is under construction in China, which passes through here. Among them, the control project, Hongdoushan Tunnel, is located in the hinterland of the boundless mountains, adjacent to the Lancang River, with a maximum buried depth of 1020 meters. But no one expected that the mysterious and beautiful boundless mountains are rich in eight kinds of toxic and harmful gases, such as hydrogen sulfide, carbon monoxide and carbon dioxide, due to extremely special geological conditions. The first echelon workers in charge of tunnel excavation must wear gas masks during construction.

　　The toxic gas in the tunnel seems to be trapped in balloons and hidden in the rocks of the boundless mountains. Once these toxic balloons are punctured during construction, the toxic gas will explode. In 2017, the construction team that just entered the site for one year, due to insufficient research and treatment experience of toxic gases in the tunnel, led to a gas outburst accident in Hongdoushan Tunnel. Subsequently, two-thirds of employees applied for evacuation from the construction site, and the project was once at a standstill.

　　Just then, Zhao Yu, who has 20 years of experience in tunnel construction, was ordered to come here.

Zhao Yu, manager of Dalin Railway Project Department of China Railway 10th Bureau.

　　Zhao Yu, manager of Dalin Railway Project Department of China Railway 10th Bureau.Everyone has no retreat, so we leaders, from myself, have no retreat and must stand in the front line.

　　Zhao Yu and Quan Fei, who was demoted to deputy chief engineer because of the sudden explosion accident, gathered the employees in the project team who had not been evacuated and formed a new team. Everyone should go against the trend.

　　A tunnel contains many mysterious poisonous gases. This kind of difficulty, which is rare in the world, is a rare opportunity in the eyes of the brave. The new team invited experts from various fields to conduct in-depth investigation, and must thoroughly understand the poisonous gas in Hongdoushan Tunnel.

　　After investigation by experts, the extremely dangerous area of toxic and harmful gases in Hongdoushan Tunnel reached 5764 meters, accounting for more than half of the total length of the tunnel. Everyone agrees that the rare geological environment conditions and the complex and changeable gas composition of Hongdoushan Tunnel have exceeded the cognitive level of current geological exploration technology, and its prevention measures are still in the stage of research and exploration.

　　This conclusion of the expert group means that the construction party cannot get more help from the past experience and technology.

　　Every step is exploration, but once the road is explored, it is the way to get rid of the predicament.

　　After the tunnel air is thoroughly disinfected and ventilated, the second echelon personnel can take off their gas masks and enter the construction site. Eight kinds of toxic gas dilemmas in Hongdoushan Tunnel have finally been broken through in actual combat.

　　On August 17th, last year, there was another danger of water gushing in the No.2 inclined shaft of the tunnel. Although the construction can be continued after 37 days of pumping and drainage, now, the constantly gushing water will still flood some construction areas, and the workers need to stand waist-deep in the water all the time.

　　Eight kinds of poisonous gas, high temperature and sudden mud gushing are not only the first time in the history of tunnel construction in China, but also rare in the world. The team of Hongdoushan Tunnel has constantly solved various rare problems in the construction, but it has also accumulated very valuable experience and technology for tunnel construction in China.

　　In June this year, the first batch of patents and academic papers based on the construction of Hongdoushan Tunnel will be published soon. By the end of this year, the scientific research results involving six patents will also be fully launched.

　　At present, the construction of Hongdoushan Tunnel has exceeded 3,000 meters, and the key project of China-Myanmar International Corridor — — The construction of Dalin Railway is also progressing steadily. After it is completed and opened to traffic in 2021, it will play a positive role in improving the railway network in western China and highlighting the interconnection of infrastructure between Yunnan and neighboring countries.