Open the WeChat app, enter the resident health card, and click the health card.

2. Click on the electronic health card that needs to be cancelled.

3. Turn to the bottom and click Unbind this card.

The health code is based on real data, which is declared by citizens on the Internet. After background review, the personal QR code can be generated. As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city. The introduction of the health code aims to make the work of returning to work more accurate, scientific and orderly.