1. First, open the password setting page of Healthy Nanjing.
2. Then, enter the ID number and mobile phone number, and complete the authentication according to the prompts.
3. Then, in the settings page, select a password of 8 to 16 digits and enter a new password.
4. Finally, after confirming the password, click the "Save" button to complete the password setting from 8 to 16.