2. Then, in the personal information interface, click the last option: personalized signature.
3. Then in the new interface, enter the content of personalized signature, and click the Save button in the upper right corner.
4. Finally, you will automatically return to the personal information interface, and you can see that the personalized signature has been successfully modified.
5. Open the WeChat circle of friends, and you can see that the personalized signature just modified is displayed below the avatar.