You can't change the nickname of the post bar. The name in the post bar is your Baidu user ID. Once registered, you can't change it unless you re-register a new number.

However, you can change your membership badge and buy it at Post Bar Mall: /m/badge.

The modification method of the signature file of Post Bar is as follows:

Post Bar Signature File: Only Baidu Post Bar Picture Library and Baidu Space Pictures are supported. The maximum size of the signature file is 500*200 pixels, and the picture you insert will be automatically scaled according to the aspect ratio.

Signature file picture link: After uploading the desired picture to Baidu Space Album, open this picture in the Album (remember: this picture is opened, not the reduced picture in the Album list), put the mouse on the picture, right click, and in the pop-up dialog box, copy the link address in the "Properties" column and paste it into the signature file picture link.

The signed file image will not be displayed until it has been reviewed by Baidu system.

In addition, you must be a registered user for 3 months. When logging in to post, the option of signature file will appear below the post box, otherwise the settings will not be used.

If you meet all the above conditions, but still don't display the signature file, it may be that Baidu system is lagging behind, so wait patiently for a while; Or check your browser and network, clear cookies and temporary files, log in again and try uploading again.

If it is not displayed for a long time, you can reply to the complaint center /tousu/new/add.

See: /tb/help/new/index.html#n6 for details.