What does the health code on wechat mean to check it three times a day?

The health code on WeChat shows three inspections in five days, which means that Guizhou Province will monitor the health of people whose travel codes are marked with asterisks. The three inspections in five days are as follows:

1, the first day, after arriving at the destination, the first nucleic acid test was conducted immediately.

The next day, 1 24 hours after sampling, the second nucleic acid test was conducted.

3. On the fifth day, the fifth day after arriving at the destination, after the first two nucleic acid tests were negative, the third nucleic acid test was conducted.

The five-day three-inspection interval requires that the sampling time for the first 1 nucleic acid test should be less than 24 hours, and the sampling time for the second nucleic acid test should be less than 48 hours.