Yes China news agency, Beijing, 6 September (Reporter Pang Wuji) Jin Jun, a partner of China Management Consulting Department of PricewaterhouseCoopers, an international accounting firm, pointed out in Beijing on the 6 th that according to the latest research, Beishang Guangshen has become a veritable "super-first-tier" city in China and has its own influence in the world. The observation cities in the report cover 42 cities in China. The evaluation tool includes ten observation dimensions, covering economic development, social livelihood, urban infrastructure and other aspects. At the same time, this year, special attention is paid to measuring the city's disaster resistance from the perspectives of medical and health care, urban production safety, natural disasters and public safety. The observation results show that Beijing, Shanghai, Guangzhou and Shenzhen rank among the top four. Jin Jun said that these four cities can compete with world-class cities and are also typical of the urban agglomeration effect. At the same time, Chengdu, Nanjing, Hangzhou, Wuhan, Zhengzhou and other "new first-line" cities that have developed rapidly in recent years are also among 10, which also have sufficient development momentum and talent attraction. In many dimensions, "new first-tier" cities often rank in the top five. For example, Changsha and Nanjing rank third and fourth in terms of "intellectual capital and innovation". "Transportation and Urban Planning" ranked first in Nanjing and third in Suzhou. Jin Fang, secretary general of China Development Research Foundation, said that the sudden COVID-19 epidemic in 2020 posed a severe challenge to urban development and governance, and big cities were the main battlefields of this crisis. Thanks to the strong leadership of the China Municipal Government and the joint efforts of the whole society, the epidemic situation in China has been well controlled. Good infrastructure, extensive application of information technology, strict and efficient community management, extensive participation of social organizations and strong civic awareness in big cities have played a key role in coping with the crisis brought about by the epidemic. All these show the strong resilience and resilience of cities, especially big cities and urban agglomerations, in crisis response. Jin Jun also said that the COVID-19 epidemic was a "big test" for the city to comprehensively respond to major emergencies, which made the city managers more deeply aware of the importance and urgency of enhancing the city's ability to respond to various major emergencies and promoting the fine management of the city. China's economy is changing from a high-speed growth stage to a high-quality development stage, so it is increasingly critical to explore a sustainable development path of coordinated development of economy, society and environment according to local conditions.