How to isolate low-risk families in Xuchang?

Xuchang low-risk home isolation is a yellow code, which can be automatically restored to a green code after seven days. The yellow code indicates the need for home isolation, and red team indicates the need for centralized isolation. One of the transcoding rules of health code is to encode according to the roaming information of mobile phone signal, and the health code will be automatically converted into yellow code or red code according to the different risks of the area where mobile phone signal roams. It can automatically return to the green code after seven days.