After entering my QQ Center, click "Dynamic".
Switch to My Dynamic, choose to see only personalized signatures, then move the mouse to Personalized Signature Dynamic and click the "Delete" button in the upper right corner.
Next, on the mobile phone, on the "I" page, clear the column of personalized signature and become blank.
Next, click on the avatar-my profile again.
We found that we couldn't see the column of our personal signature on the "My Personal Information" page, so we couldn't see the historical news record of our personal signature.