1. The health code is missing. Search the official WeChat account again, and just open it. For example, if we are from Wuxi and search for healthy Wuxi on WeChat, we will bring up the page of health code. Open your WeChat, click Search, enter the health code, and find this official WeChat account.
2. Open Alipay, and then find the function of health code on Alipay homepage. After entering the health code, you need to switch cities, because the health code belongs to the original city, click the city in the upper left corner.