After logging in to the mailbox, click Settings at the top of the mailbox to enter the mailbox settings interface.
The personalized signature of QQ mailbox can be seen in the common settings. Click to enter.
You can enter text and click on the picture to insert the picture. Note that only pictures on the network are supported, not local uploading.
You can upload personalized signature pictures to QQ space photo album, and then copy the link address from it.
Paste it into the personalized signature, and you can see the effect of the personalized signature picture after confirmation.
Go back to the settings interface and remember to save the settings before they take effect.