Jining is a low-risk area, and the entry and exit regulations are: 1. Anyone who enters and returns to Shandong from outside the province must hold a negative certificate of nucleic acid detection within 48 hours; If there is no negative certificate, 1 nucleic acid test should be conducted within 24 hours after arrival. 2. Conduct 7-day centralized isolation and 7-day home health monitoring for outflow personnel from counties (cities, districts) in high-risk areas. 3. After the personnel from the county (city, district) where the middle risk area is located arrive, they will be monitored for 7 days. 4. High-risk personnel returning from other places shall be strictly reported and investigated by the community (unit). Those who have been away from work for less than 14 days shall be isolated in a centralized way until they have been away from work for less than 14 days, and shall be detected as close contacts. 5. For truck drivers and passengers from and passing through local epidemic areas, the receiving (delivering) unit shall report to the local leading group (headquarters) in advance, and conduct closed-loop connection at the designated freight yard outside the designated urban area. 6. Returnees from low-risk areas in China: After arriving in China, they will go directly to the nearest sampling point for nucleic acid testing.