First, click on the service on WeChat my page.
2 click on the city service
Then click City Services on the Services page.
3 click on the health code
Go to the "City Service" page and click the health code.
4 click Ankang code
Then click the Ankang code on the Health Code page.
5 click on three points
Then click on the three points on the Ankang code page.
6 Click Add to Desktop.
Finally, click in the function box.