First, open WeChat on the mobile phone desktop. After entering the WeChat homepage, click the "I" option at the bottom right of the screen. After entering the "Me" page, click the "Payment" option, and then click the "City Service" option; After entering the "City Service" page, click the "Health Code" option; Fill in the personal information in the pop-up interface, and then turn on face recognition verification to get the health code. After obtaining the health code, enter Alipay or WeChat, find "City Service" and find your own health code.
If you find it troublesome to check the health code with WeChat, you can set the health code on the mobile phone desktop, so that you can open it at any time to let others check it and provide convenience for travel.