There are two main reasons, one is that epidemic control needs coding; The second one was given a red team and a yellow code for personal declaration.
2. Hangzhou health code implements three-color dynamic management of "green code, red code and yellow code": that is, those who display green code will enter and leave Hangzhou through bright code and scanning code in the city; If red team is displayed, it needs to be in the home collection or isolated for 14 days, and it will be changed to a green code after continuous declaration of health punch 14 days. If the yellow code is displayed, it should be concentrated or isolated at home within 7 days, and it will turn into a green code after the continuous declaration of health punching is normal for no more than 7 days.
Therefore, when the health code is red, it needs to be in the home set or isolated for 14 days. After 14 days of continuous declaration of health punch, it will turn into a green code before it can pass.