Migrant workers returning to the city need to hold a negative nucleic acid certificate within 48 hours, declare independently through the "Wenzhou Epidemic Prevention Code" or declare to their communities (villages), units or hotels in advance. Advocate to carry out nucleic acid testing for people from other provinces in Pingping and Pingping, twice every 3 days, with an interval of 24 hours; After the landing inspection, people from other provinces will check it three times every three days with an interval of 24 hours, which will be included in the category of normalized nucleic acid detection, and the corresponding nucleic acid detection and health management measures will be implemented. People who come to Pingping and return to Pingping, an epidemic risk area, should take the initiative to report 2 days in advance and cooperate with China to implement corresponding health management measures. Those who don't report to Ping Ping or return to Pingping should be quarantined at their own expense.