At noon on May 18th, 2011, a glass curtain wall of Times Financial Center Building in Pudong, Shanghai suddenly fell from the 46th floor, damaging many cars in the parking lot of Lujiazui Ring Road on the north side to varying degrees.

　　On the evening of June 17, a piece of glass fell from the glass curtain wall of Changhong Century City in Mianyang, Sichuan, killing the owner of the community who was walking below (Chengdu Business Daily reported continuously).

　　This extreme incident has also aroused the concern of citizens and netizens about the safety of glass curtain walls and related responsibilities.

　　A reporter from Chengdu Business Daily visited and investigated in the past week and found that glass curtain walls are common in the whole country, but there are many hidden dangers.

　　There is also a hidden responsibility problem behind the hidden danger — — According to the relevant management measures issued by the state before, the main body of the safety maintenance of the glass curtain wall after the warranty period is the owner himself.

　　Chengdu Business Daily reporter Tang Xiaojun

　　Who is responsible for the safety of glass curtain wall?

　　The main body of safety maintenance after the warranty period is the owner.

　　On June 24th, Chengdu Business Daily reporter once again came to Mianyang Changhong Century City Community to talk about the risks of glass curtain wall. No matter whether it was installed by himself or other owners, there was a kind of worry in his words. "It is very troublesome for glass to fall and hit others, or to be hit by glass." However, for the daily safety maintenance and responsibility of glass, the interviewed owners are at a loss.

　　"In fact, there have been regulations for a long time, but everyone didn’t pay much attention." In this regard, the relevant person in charge of Mianyang Engineering Quality Supervision Department introduced that in 2006, the then Ministry of Construction issued the "Administrative Measures for the Safety Maintenance of Curtain Walls of Existing Buildings", in which Article 8 is the determination of the responsible person for the safety maintenance of curtain walls of existing buildings: (1) If the building is owned by a single owner, the owner shall be the responsible person for the safety maintenance of its curtain walls; (2) If the building is jointly owned by multiple owners, each owner shall jointly determine a person responsible for safety maintenance to take the lead in the safety maintenance of the building curtain wall.

　　"That is to say, the owner is responsible for the safety maintenance of the glass curtain wall after the warranty period. After the two-year warranty period, the owner should carry out strict inspection and safety maintenance in time according to the requirements of relevant specifications. For example, in a residential community, the owner can entrust the property company to check and maintain on time. " The person in charge explained.

　　So, how should the maintainer carry out maintenance? The person in charge further introduced that according to the "Technical Specification for Glass Curtain Wall Engineering" issued by the Ministry of Construction in 2003, it is required to conduct a comprehensive inspection of the curtain wall project one year after the completion and acceptance of the curtain wall project, and then every five years. The inspection items include whether the curtain wall as a whole is deformed, dislocated, loose, etc. Whether the glass panel is loose or damaged; Whether the sealant is degummed, cracked and blistered, and whether the sealing strip is damaged by falling off and aging; Whether the opening part can be opened and closed flexibly, whether the hardware accessories have functional obstacles or damage, and whether the installation bolts are loose and ineffective; Whether the drainage system of curtain wall is unobstructed. After the curtain wall project is used for 10 years, the silicone sealants in different parts of the project should be sampled for bonding performance; It should be checked every three years thereafter.

　　"The Technical Specification for Glass Curtain Wall Engineering puts forward standards, which must be done during inspection and maintenance. The comprehensive inspection one year after the completion acceptance specified above is carried out by the construction unit and the construction unit, and will be carried out every five years thereafter, because after the warranty period, it should be the maintainer, that is, the owner or the safety responsible person entrusted by the owner. " The person in charge said.

　　The reporter learned that the Changhong Century City Community where the accident occurred was delivered around 2011. According to the previous regulations, the glass curtain wall has passed the warranty period. However, among the eight owners interviewed by the reporter, none of them knew that they were the main body of safety maintenance of the glass curtain wall after the warranty period, let alone the service life and how to maintain it.

　　"When buying a house, no one talked about the service life of the glass curtain wall, nor did they say how to maintain it." An owner of Changhong Century City said. Another owner surnamed Wu said that the glass curtain wall is a part of the whole building, and the developer should ensure the quality and safety. It cannot be said that the problem of glass is the owner’s problem. "Everyone spends the same money to buy a house. If the glass curtain wall is to be maintained by the owner himself, then we will suffer a big loss compared with other owners."

　　The glass curtain wall of the accident community is a hidden frame.

　　Glass curtain walls have fallen in many places.

　　In recent days, Chengdu Business Daily reporter visited 15 residential areas built in recent years in Mianyang City, and found that in residential areas such as "1958" and "Shuiyun Riverside", glass curtain walls were installed in buildings on the top 3 to 5 floors. Li Ning, general manager of Changhong Real Estate Mianyang Company, said that the glass curtain wall is divided into open frame, semi-hidden frame and hidden frame, and Changhong Century City Community uses hidden frame. The reporter learned on the spot that many of these communities using glass curtain walls use hidden frames.

　　Why choose the hidden box? The project manager of Changhong Century City Community said that the hidden frame is two pieces of glass directly evacuated and glued together, and the open frame is glass embedded in a frame structure, "the hidden frame is more beautiful." The project manager admitted that insulating glass can provide sound insulation, heat insulation, frost prevention, etc., but there are also potential safety hazards and disadvantages of light pollution. The reporter found that in recent years, glass curtain wall falling accidents have occurred both inside and outside the province, causing casualties and property losses such as cars.

　　Why install glass curtain wall? In the survey, many Mianyang real estate developers pointed to the Technical Regulations on Urban Planning and Management of Mianyang City, which requires that the roof should be decorated with aluminum profiles, glass, steel and other materials … … On June 23, a staff member of Mianyang Planning Bureau pointed out that the planning unit would not ask the developer to make a glass curtain wall, but would only stipulate what style should be used in a certain area.

　　In 2015, the country has a new regulation that some new residential high-rise buildings ban glass curtain walls.

　　In response to the frequent glass curtain wall accidents, the reporter found that the Ministry of Housing and Urban-Rural Development and the State Administration of Work Safety jointly issued the Notice on Further Strengthening the Safety Protection of Glass Curtain Wall in 2015, clearly requiring that some new buildings on the second floor and above should not use glass curtain walls.

　　The Notice stipulates that glass curtain walls shall not be used on the second floor or above in new residential buildings, office buildings of party and government organs, emergency rooms and wards of hospitals, primary and secondary schools, nurseries, kindergartens and buildings for the elderly. Full-hidden frame glass curtain walls are strictly prohibited in crowded and mobile commercial centers, transportation hubs, public cultural and sports facilities and other places, near roads, squares and buildings with entrances and exits and personnel passages at the lower part. If glass curtain walls are installed on the second floor or above of the above buildings, buffer areas such as green belts or podium should be reasonably set in the surrounding area below the curtain walls, and protective measures such as overhangs and impact-proof awnings can also be adopted.

　　Why should the use of glass curtain walls be restricted? The "Notice" pointed out that in recent years, accidental incidents of damage and injury caused by self-explosion and falling off of curtain wall glass in individual cities have endangered people’s lives and property safety and aroused social concern. The reasons for these safety hazards are not only the technical defects and material defects in the early glass curtain wall project, but also the lack of attention to the safety protection work in specific environments and buildings such as dense personnel and high mobility. "The failure to implement the maintenance and management responsibility of glass curtain wall is also an important reason."

　　The "Notice" further clarifies that the owner is responsible for the safety maintenance of the glass curtain wall.

　　The design service life of glass curtain wall is 25 years.

　　Owners are worried about who will pay for the replacement after 25 years.

　　At the same time, the reporter further interviewed and found that according to the Unified Standard for Reliability Design of Building Structures (GB 50068-2001), the design service life of glass curtain wall is 25 years and the glue is 10 years. So, what about those tall buildings with glass curtain walls installed before, after 25 years of use? Change it or not? Who will change it?

　　In this regard, the Notice of the Ministry of Housing and Urban-Rural Development and the State Administration of Work Safety also stipulates that after the glass curtain wall has reached its service life, the person in charge of safety maintenance shall entrust a unit with corresponding qualifications to conduct safety performance appraisal of the glass curtain wall, and if it needs to be modified, reinforced or dismantled, it shall entrust a unit with corresponding qualifications to be responsible for implementation.

　　So, who will pay for this? In the interview, both the owners and developers said that they didn’t know what to do, and many owners who lived in the residential area with glass curtain walls expressed concern.

　　Author: Huang Rongsheng (Special research fellow of New Era Socialism with Chinese characteristics Thought Research Center, the supreme leader of the Ministry of Education, and research fellow of Southwest University Branch of Chongqing Socialism with Chinese characteristics Theory System Research Center)

　　Since the 18th National Congress of the Communist Party of China, the General Secretary of the Supreme Leader has grasped the general trend of world development, focused on the future and common well-being of mankind in the information age, and clearly put forward the important concept of building a community of cyberspace destiny. In November 2014, the first world internet conference was held in Wuzhen, Zhejiang Province, and this year marks its tenth year. In his video address to the opening ceremony of the Wuzhen Summit in world internet conference in 2023, General Secretary of the Supreme Leader put forward "Three Advocates", emphasizing "deepening exchanges and pragmatic cooperation, and jointly promoting the construction of a community of cyberspace destiny to a new stage", which provided a program of action and pointed out the way forward for the development and governance of the world’s Internet.

　　1. Build a global Internet governance system and continuously deepen international exchanges and cooperation in cyberspace.

　　The Internet has profoundly changed people’s way of production, life, communication and social governance. Countries in the world are more interconnected and interdependent than ever before. The world has truly become a global village where the voices of chickens and dogs hear each other, and the international community has increasingly become a community of human destiny with you and me. Undoubtedly, the development of the Internet has accelerated the digital, intelligent and green transformation of the industry, and the digital economy has flourished, bringing great new opportunities for the development of all countries; At the same time, problems such as unbalanced development, imperfect rules and unreasonable order in the Internet field are increasingly prominent, which brings new risks and challenges to world peace and development and the future and destiny of mankind. It is imperative to promote the reform of the global Internet governance system, and the world calls for more fair, reasonable and effective solutions.

　　Since the new era, China has actively participated in the global Internet governance mechanism, continuously deepened international cooperation in the digital economy, jointly safeguarded cyberspace security, and promoted the inclusive development of the Internet. The General Secretary of the Supreme Leader attaches great importance to the development and governance of the Internet and advocates building a community of cyberspace destiny. Especially in 2015, the General Secretary of the Supreme Leader attended the opening ceremony of the Second world internet conference and delivered an important speech, putting forward the "four principles" and "five propositions" of global Internet development and governance, emphasizing respect for network sovereignty, maintaining peace and security, promoting open cooperation and building a good order, calling for "accelerating the construction of global network infrastructure, promoting interconnection", "creating an online cultural exchange and sharing platform, promoting exchanges and mutual learning" and "promoting the innovative development of network economy, promoting The "four principles" and "five propositions" are the "golden keys" to solve the real dilemma of Internet development and governance.It has provided a fundamental basis for effectively coping with and resolving the risk challenges in the Internet field, giving full play to the remarkable advantages of Internet functions, making the Internet better benefit people all over the world, and working together to build a community of cyberspace destiny, which has been widely recognized and positively responded by the international community. After years of deep cultivation and practice, the "four principles" and "five points" have been deepened and implemented, which has promoted the construction of a community of cyberspace destiny from concept documents to action initiatives, from concept principles to concrete practice, and played a positive role in solving the development deficit, solving the security dilemma and strengthening mutual learning among civilizations. China’s international discourse power and influence in cyberspace are increasing day by day, and China’s ideas, China’s ideas and China’s plan have won more recognition and support.

　　2. Build a more inclusive, prosperous, peaceful, secure, equal and inclusive cyberspace.

　　In today’s era, the development of the Internet has jumped to a new stage of all-round penetration and cross-border integration. Digitalization, networking and intelligence have accelerated development, which has increasingly become a new kinetic energy to promote development, a new platform for maintaining security in Xinjiang, and a new platform for mutual learning among civilizations. The world is facing the era choice of "where to go" for Internet development and governance. In his video speech at the opening ceremony of the Wuzhen Summit in world internet conference in 2023, the Supreme Leader put forward the "Three Advocates" for building a more inclusive, prosperous, peaceful, safe, equal and inclusive cyberspace, and set sail for the global Internet development and governance from the three dimensions of development, security and civilization, and drew a beautiful blueprint for building a community of cyberspace destiny.

　　Advocate development priority and build a more inclusive and prosperous cyberspace. Development is the eternal theme of human society. At present, the global economic recovery is weak, the development deficit is increasing, and the desire of countries to seek development is even stronger. Universal and prosperous cyberspace means that Internet development and governance should adhere to the new concepts of helping each other in the same boat, mutual trust and mutual benefit, dialogue and cooperation, abandon the old concepts of zero-sum game, isolation and exclusivity, and plan and promote the construction of a community of cyberspace destiny from the overall long-term interests of all mankind, promote the development of network technology in various countries, deepen international exchanges and cooperation in the digital field, and continuously enhance the well-being of human society. In September 2021, General Secretary of the Supreme Leader solemnly put forward the "Global Development Initiative" at the general debate of the 76th UN General Assembly, advocating to jointly promote global development to a new stage of balance, coordination and tolerance. Building a more inclusive and prosperous cyberspace is in the same strain as the Global Development Initiative, which is a vivid practice of the Global Development Initiative in the Internet field. To this end, we must adhere to the development priority, accelerate the Internet to empower economic development, promote the integration of digital economy and real economy, and promote new global development with new kinetic energy; We must persist in taking the people as the center, safeguard and improve people’s livelihood in the development of the Internet, let more countries and people share the fruits of the development of the Internet, and constantly meet the diverse, multi-level and multi-faceted needs of the people for a better life.

　　Advocate safety and common prosperity, and build a more peaceful and secure cyberspace. Peace is the cornerstone of human existence, and security is the premise of human development. Today, the world has undergone a great change in a hundred years, and the evolution is accelerating. All countries need a peaceful and secure cyberspace. This means that the development and governance of the Internet should put human life safety and survival and development in the first place, and never let the Internet become a "battlefield" for countries to wrestle and a "hotbed" for crimes. In his keynote speech at the opening ceremony of the 2022 annual meeting of Boao Forum for Asia, General Secretary of the Supreme Leader put forward the "Global Security Initiative", which clarified the Communist Party of China (CPC)’s concept of global governance security in the new era. Building a more peaceful and secure cyberspace is in the same strain as the Global Security Initiative, which is a vivid embodiment of the Global Security Initiative in the Internet field. To this end, we must respect network sovereignty and respect the development path and governance model of the Internet in various countries; We must oppose cyber hegemonism, not engage in cyber camp confrontation and arms race, and attach importance to the legitimate security concerns of all countries. One country cannot be safe while other countries are not, and some countries are not safe, let alone seek their own so-called absolute security at the expense of other countries’ security. We must crack down on cyber crimes and cyber terrorism, properly deal with and effectively resolve the risks and challenges caused by the progress of network information technology, and strengthen data security and personal information protection.Comprehensively build a "firewall" for network digital information security.

　　Advocate mutual learning among civilizations and build a more equal and inclusive cyberspace. Internet is the achievement of modern human civilization and represents the modernization level of human society. The great prospect of Internet communication is to spread the excellent culture of human beings, promote people of all countries to know each other, and promote tolerance and symbiosis among different civilizations. Internet development and governance should recognize and tolerate differences. Building a more equal and inclusive cyberspace essentially shows that "there is no distinction between superior and inferior civilizations, only differences in characteristics and regions, which can only be integrated through exchanges and progress through integration". It is necessary to promote equal exchanges, mutual learning, harmony and symbiosis between Chinese civilization and world civilization, promote the development and prosperity of world cyber culture, and promote the construction of a cyberspace destiny community with multiple participation, joint construction and common governance. In March, 2023, General Secretary of the Supreme Leader put forward the "Global Civilization Initiative" in his keynote speech at the high-level dialogue between the Communist Party of China (CPC) and the world’s political parties. Building a more equal and inclusive cyberspace is in the same strain as the Global Civilization Initiative, which is a vivid practice of the Global Civilization Initiative in the Internet field. To this end, we must strengthen external communication and exchange, publicize China’s concept and China’s plan, tell the story of China well and spread Chinese culture; We must abandon the theory of "the superiority and inferiority of civilizations" and "the theory of clash of civilizations", promote equal cultural exchanges among countries, and jointly protect human cultural treasures; We must strengthen the production and dissemination of online cultural products,Fully display the outstanding achievements of human civilization, jointly build an online spiritual home, and better carry forward the common values of all mankind.

　　3. Promote the construction of a community of cyberspace destiny to a new stage.

　　The Internet is the common home of all mankind, and the cyberspace carries mankind’s infinite longing for a better future. Promoting the construction of a community of cyberspace destiny to a new stage is not only a strategic move that conforms to the trend of the information revolution era, but also a major move that reflects the common voice of the international community and reflects the responsibility of China as a big country.

　　Focus on developing the digital economy. Digital economy is a brand-new economic form with data as the core and information technology as the support. With the development of Internet, digital economy has become the new engine of global economic development. Creating an open, fair, just and non-discriminatory digital development environment and building an inclusive, inclusive and resilient digital world is an important focus to promote the construction of a community of cyberspace destiny to a new stage. Specifically, to speed up the construction of digital infrastructure, countries should strengthen cooperation in the popularization of digital infrastructure such as artificial intelligence, Internet of Things, and 5G, promote the digital technology empowerment industry, and promote the bridging of the digital divide. Second, it is necessary to provide support for digital talents. Countries should strengthen the training, exchanges and cooperation of digital talents, promote the transnational flow of digital talents and promote the vigorous development of the global digital economy. Third, to improve the level of digital technology innovation, countries should increase their support for enterprise digital technology innovation, give enterprises necessary tax incentives and government subsidies, and stimulate the enthusiasm of enterprise digital technology innovation. Fourth, to maintain the new territory of network security, countries should optimize the legal rules of Internet security and build a security barrier for the development of global digital economy.

　　Build a global network communication platform. China actively participates in the global Internet development and governance, and builds a high-end platform for international exchanges and cooperation in cyberspace. As an important platform for countries around the world to deepen exchanges and cooperation in the Internet field, world internet conference Wuzhen Summit attracts representatives from global government departments, international organizations, leading Internet companies, industry associations and academic institutions to actively participate in the conference, and strengthen exchanges and dialogues and deepen pragmatic cooperation around hot, focused and difficult issues in cyberspace. In July, 2022, world internet conference International Organization was established, world internet conference was upgraded from an international conference to an international organization with a permanent organization, and Wuzhen Summit was transformed into an annual meeting of international organizations, which increasingly demonstrated the platform role of China and the world in the field of Internet interconnection, sharing and governance, and won wide appreciation from the international community. Facing the future, we should further run the Wuzhen Summit in world internet conference, and promote world internet conference to become an important platform for tolerance, mutual trust, solidarity and mutual assistance, consensus-building, cooperation and mutual benefit, exchange and mutual learning, and development, as well as for maintaining network security and pushing the global Internet governance system towards a more just and reasonable direction, so that a more prosperous, cleaner and safer Internet can better benefit people all over the world.

　　Carry forward the common values of all mankind. Peace, development, fairness, justice, democracy and freedom are the common values of all mankind. Promoting the interconnection, sharing and governance of cyberspace and building a community of cyberspace destiny together need to vigorously promote the common values of all mankind. First, we must thoroughly implement the ideological concept and value proposition of the Supreme Leader General Secretary on building a community of destiny in cyberspace, and continue to introduce more international public products on the value of the community of destiny in cyberspace to the global cyberspace. Second, we must carry forward the spirit of Internet development and governance dedicated to the lofty cause of world peace and development, build a stable and orderly network international environment, and push the community of cyberspace destiny to a higher level of ideal picture and beautiful realm. Third, we should abandon unilateralism and power politics, establish a win-win concept of mutual benefit, mutual trust and tolerance, and promote the development of a community of cyberspace destiny in a more scientific and rational direction. Fourth, we must adhere to the democratization and legalization of international network relations, respect the role of the United Nations as the main channel for coordinating international issues, ensure that international network rules and risk challenges are dealt with by all countries through equal consultation and cooperation, promote international exchanges and cooperation in cyberspace, and let more countries and people share the fruits of Internet development and jointly create a better future for mankind.