You can change the nickname simply by clicking the notes and labels on your friends' business cards. The operation is quite simple. Let me share the process with you.

Software version: 8.0.28. Mobile phone model: vivo Y31s.

The specific operation steps are as follows:

1. Open the WeChat app, first click the address book, and then find the friend whose comment you want to change.

2. After entering your friend's business card, click on the three points in the upper right corner.

3. Then click Set Notes and Labels.

4. Then enter the comments you want to modify, and finally click Finish in the upper right corner to modify.

I have finished sharing it, and I hope it will help you complete the change.