Lifting criteria: high-risk areas: no new infections for 7 consecutive days, and all people in the risk area on the 7th day of the nucleic acid screening is negative, changed to medium-risk areas; no new infections for 3 consecutive days and then downgraded to low-risk areas.
Medium-risk area: no new infections for 7 consecutive days, and all people in the risk area have negative nucleic acid screening on the 7th day, changing to low-risk area.
Low-risk areas: the county (district, city, flag) without medium and high risk areas, low-risk areas adjusted to normalized prevention and control.