This situation may be that you have been to high-risk areas or contacted with confirmed personnel or suspected cases, which may lead to the risk that the health code will change all the time, and there will be a red team or yellow code. In this case, don't go out first and then get in touch with the community. You can also check yourself to see if it is possible to get in touch with the officially announced cases, or we have been to the middle and high-risk areas recently. If you feel that these are not available, you can also contact the community and ask for a code return. At the bottom of the display page of the health code, there is also a network complaint function, which can also be used to make complaints. Under normal circumstances, there should be results that day.