Why can't Shenzhen students add children when they are healthy?

Does the subject want to ask "how to add children to the health of students in Shenzhen?" "

1. First download and log in to Shenzhen app. On the Life page, click "Epidemic Prevention and Control Service".

2. Secondly, click "Health Code" in the epidemic prevention and control service area, and click "Self-declaration" in the page display.

3. Then fill in the basic information of the child, and the mobile phone number can be filled in by the parents. After filling it out, the report will be successful. Click View Health Code to view the health code.