1. Open "WeChat" on your mobile phone and click "Official WeChat Account" on the "Address Book" page below.
2. Click the "+"sign at the top right of the official account page of WeChat.
3. Search for "Health Certificate" in the search bar, and click "Inquiry Entry" in the official account of "Inquiry Health Certificate" WeChat.
4. Click "Read the original", enter the ID number, and click "Query Personal" to query the electronic health certificate.