Tools: Xiaomi 12, MIUI 13, qq8.9.28.

1. After opening the main qq page, find the avatar logo in the upper left corner.

2. After opening the hidden page, find the personalized signature under the user name in the page.

3. After opening the signature editing page, find and find the location of the historical signature.

4. After jumping to the page of history logo, find the management at the top right of the page.

5. Check all the personalized signatures and find the deletion location at the bottom of the page.