Specific steps:
1. First, open the health code and display the key line code. Click to enter personal information management.
2. In the personal information, there is a "Add Roommate", click to enter.
3. Roommate information needs to be filled in, such as name, ID card, address, no doubt symptoms, Ningbo household registration, health or isolation.
4. After approval, after opening the health code, the information of two people will be displayed. If you want to display the roommate's information, you can directly click the QR code icon in the lower right corner and directly enter the roommate's health code.