Take the initiative to report (all migrant workers in the province must pass the "Guizhou Health Code" applet on declare in advance's personal health status and check in with a negative certificate of nucleic acid test within 48 hours. At the same time, we should take the initiative to report to the community, village or hotel, unit or visiting reception unit)
Three tests in three days (one nucleic acid test on 1 day, the second day and the third day respectively)