During the investigation, Li Xi presided over a symposium to listen to the report on epidemic prevention and control and economic and social development in Shenzhen. In a clean and positive political environment, we will take concrete actions to welcome the successful convening of the 20th National Congress of the Communist Party of China. First, we should take epidemic prevention and control as the first task at present and pay close attention to it. With the hard measures of "fast, strict and practical", the local epidemic situation in Shenzhen is quickly "surrounded, dried up and extinguished", the flow investigation and traceability is carried out, the close contacts and secondary close contacts are locked as soon as possible by making full use of technical means such as big data, the key population in key areas are locked by effective encirclement, the nucleic acid detection is carried out at a faster speed and in an expanded area, the hierarchical control measures are strictly implemented, and the transmission channels of the epidemic are cut off as soon as possible. Comprehensively strengthen social prevention and control, strengthen activity management, reduce personnel gathering, focus on key parts, important places and key people, and strictly implement various prevention and control measures. Strengthen regional coordination, external defense input, Guangdong, Hong Kong and Macao joint defense and joint control defense, strengthen the landing screening and health management of personnel from medium and high-risk areas who come to Shenzhen and return to Shenzhen, pay close attention to the "four directions" of aviation, land, water ports and people's environment, close the closed loop, and effectively build an iron wall for epidemic prevention and control. Second, we should uphold the principle of "stability first" and seek progress while maintaining stability, keep the economic operation within a reasonable range, and make Shenzhen efforts to contribute to the economic and social development of the province. Seize major historical opportunities such as the construction of the "two zones" and the two cooperation zones of Hengqin and Qianhai, deepen the implementation of the "1+1+9" work plan, and strive to achieve the expected goals of economic and social development throughout the year. We will use major projects to drive effective investment, accelerate the construction of Shenzhen as an international consumption center, do a good job in foreign trade, and "one chain, one policy" and "one enterprise, one policy" will help key enterprises solve practical difficulties. Steadily promote institutional opening, actively connect with RCEP and other high standard international economic and trade rules, continue to create a market-oriented, legal and international business environment, and let more industries, enterprises, capital and talents converge in Shenzhen. We will work hard to protect and improve people's livelihood, do a good job in employment, social security, helping people in need, strengthen employment services for college graduates, and take effective measures to help small, medium-sized and micro enterprises and industries in need continue to recover. Third, we should coordinate development and security, and spare no effort to prevent and resolve major risks. With the sense of responsibility of "always at ease", we have grasped the risk prevention work in our hands, adhered to the high probability thinking to deal with low probability events, prepared for a rainy day, carefully controlled, strictly prevented, and resolutely prevented all kinds of "black swan" and "grey rhinoceros" events. We will do a good job in maintaining social stability, crack down on all kinds of crimes, investigate and resolve social contradictions and disputes on a rolling basis, implement the responsibility system for work safety, carry out in-depth investigation and rectification of potential safety hazards, steadily prevent and resolve economic and financial risks, make every effort to carry out flood control and disaster relief, and effectively protect the lives and property of the people. We should always tighten the string of epidemic prevention and control, adhere to the principle of making the epidemic faster, accurately and efficiently promote nucleic acid detection, flow regulation and traceability, isolation and control, etc., adhere to the principle that all inspections should be done, all isolation should be done, all receivables should be collected, and all treatment should be done, cut off the epidemic transmission channels as soon as possible, and strive to win the annihilation war of local epidemic disposal. It is necessary to sort out the weak links in the prevention and control work in the whole chain and the whole process, pay close attention to the implementation of various work in a strict, tight, detailed and practical manner, and resolutely build a strong defense line against external input and internal rebound. We should strengthen port control and Shenzhen Hong Kong joint prevention and control, strictly implement the closed-loop health management of key personnel such as inbound personnel, cross-border drivers, Hong Kong and Macao migrant fishermen, and seriously do a good job in the zoning management and environmental disinfection and sterilization of key places such as port connection points and cross-border cargo operation points. We need to keep stability at the forefront and make progress while maintaining stability, accelerate the implementation of various preferential policies for enterprises, strengthen the security of the industrial chain supply chain, and make every effort to keep the economic operation within a reasonable range. We should firmly establish the concept of safe development, focus on preventing and resolving major risks in political, economic and social fields, and ensure the overall security and stability of society. Provincial leaders mengfanli, zhangfuhai, zhangxiaoqiang and Zhang Xin, and Shenzhen mayor qinweizhong participated in relevant activities. (Xinhua News Agency)