, and then click on Baidu account (ID) at the top right.

After clicking "My Post Bar", the following page will pop up, and then click "Signature File Settings"

At present, Baidu signature files can only be set with pictures, and no text can be added. Secondly, it must be the picture address of Baidu, not the address of other websites! So you have to upload your favorite picture to your Baidu photo album first, then get the address of the picture, and then add it to the "picture link address" of the signature file.