Hainan health code becomes gray code, belonging to people who haven't punched in for a long time. They need to enter the health value again before becoming a green code.
Generally, most of these people don't have a mobile phone or can't scan the code for other reasons, so they can go to the nearest nucleic acid testing place for nucleic acid testing. It is suggested to do nucleic acid testing as soon as possible, and upload it to the health code when the result is negative, so as to restore the green health code.