1. Add a new contact: in the function of setting comments and labels, after entering a label, a new label will be automatically created and the current contact will be added to the label.

2. Modify the notes and labels of contacts: When modifying the notes and labels, a new label will be automatically created after entering the label, and the current contact will be added to the label.

3. Address Book: Click Address Book at the bottom of WeChat page to see the "Tags" item, click it to open the "All Tags" page, and click "New" in the upper right corner to create a new tag.

Note: To modify the label of a contact, just click the contact, click "..." on its information page, and select "Set Notes and Labels" in the pop-up menu page. You can also directly click the label of the contact person and directly enter the "Set Notes and Labels" page to modify.