Is the three-day inspection in Shenzhen a mixed inspection or a single inspection?

Mixed inspection. According to Shenzhen's information, the three-day and three-day inspections in Shenzhen are mixed inspections. In Shenzhen, three times a day means three or two times a day for nucleic acid testing. This nucleic acid needs to be converted into hours to calculate, that is, it takes 24 hours for three days of nucleic acid negative. As long as the nucleic acid is done according to the epidemic prevention requirements, it will be negative, and the mixed test is also a nucleic acid test.