Sun Chunlan, member of the Political Bureau of the CPC Central Committee and vice premier of the State Council, visited Beijing on the 23rd to investigate and guide the epidemic prevention and control work, and conveyed the greetings of the medical staff, cadres and the masses in the front line of the fight against the epidemic from the CPC Central Committee and the State Council. She came to Haidian District and Dongcheng District to investigate Wudaokou shopping center, friendship community of Haidian Street and Oriental Xintiandi business district where there was a concentrated epidemic, to learn about the epidemic prevention and control in key places, community sealing and control, flow investigation and transfer isolation of risk personnel, and held a symposium at the district epidemic prevention and control headquarters to study and accelerate the implementation of various prevention and control measures. At present, the epidemic situation in Beijing is generally controllable, but there are still sporadic cases, and the prevention and control work cannot be relaxed at all. Sun Chunlan stressed the need to strengthen overall work and regional coordination, tilt work forces and epidemic prevention resources to key epidemic areas, and speed up the disposal of concentrated epidemic situations without delay. Colleges, universities, supermarkets and other units stationed in the district should consolidate the "Four Party" responsibility, strictly implement closed-loop management, investigate and fill the loopholes in prevention and control, and prevent the occurrence of aggregated epidemic diseases. High quality nucleic acid screening should be organized, and "knock on the door" should be carried out in key areas to ensure that all tests should be carried out, no one should be left, and the positive infected persons should be found as soon as possible to block the transmission chain. The investigation of flow investigation should be more detailed and in-depth, strengthen the coordination of three public (workers), investigate all risk points and personnel on each communication chain, and control them in place at the first time. The division of "three zones" should be more scientific and reasonable. Starting from the overall needs of prevention and control, we should ensure that all risk groups are within the scope of control. All prevention and control measures in the sealed control area should be strictly implemented to avoid sealing without control and lax management, and ensure the basic life and normal medical needs of residents. In the area where home office is implemented, the flow of personnel shall be strictly controlled to avoid clustering. Strengthen the epidemic prevention and control in Colleges and universities, do a good job in the life security and psychological counseling of teachers and students, and build a strong defense line against the epidemic on campus. Strengthen the release of epidemic information and policy interpretation, respond to social concerns in a timely manner, and solve people's difficulties with emotion. (Xinhua News Agency)