The specific operation steps are as follows:
1. Open the mobile phone first, then find the WeChat app in the mobile app, and click to open WeChat.
2. After opening WeChat, go to the "Discovery" page, and then click "Pay" in WeChat.
3. After entering the main interface of "Payment", click "City Service".
4. Then in "City Service", click "Epidemic Prevention and Hygiene Code" to find the hygiene code.