Why is the husband's yellow code space-time accompanied by his wife's green code?

It should be that the husband passed through the risk or control area and the daughter-in-law did not pass through the area.

The health code will count the places visited since 15 days before the outbreak. People didn't know there was an epidemic at that time.

If the yellow code needs to be tested for nucleic acid, it is recommended to consult the local epidemic prevention and control command center to see if it can be changed back to the green code through appeal. Now all you have to do is pass the green code.