The unit reports personal itinerary and arrival date in advance; Have a health check. Those who return to the economy in the middle and high risk area receive two nucleic acid tests (24 hours apart) and 1 serum antibody tests at the centralized service point, and those who are not abnormal are monitored at home for another 7 days; People returning from low-risk areas in key epidemic areas are tested for 1 nucleic acid at centralized service points.
Health monitoring is self-management of health at home. You can't go where there are many people, but you can go shopping where there are few people.