Puning needs to do nucleic acid when she comes back from Huilai. On January 21, 2122, when returning from a city where there is no local epidemic outside the province, you must hold a negative certificate of nucleic acid test within 48 hours, and do another nucleic acid test on the day of arrival; When returning from the city where there is no local epidemic in the province, it is recommended to do a nucleic acid test on the day of arrival; If it is returned from a low-risk area in a city where there is a local epidemic outside the province or in Shenzhen, Zhongshan, Zhuhai and other provinces, "three days and two inspections" and "three days of home health monitoring +11 days of self-health monitoring" will be implemented after arrival.