1. First open the browser, and then click the plug-in center icon in the upper right corner to enter its plug-in development center, as shown in the following figure:

2. After entering the plug-in center, enter two keywords "Post Bar" in the search box on the right, as shown in the following figure:

3. Select "Baidu Post Bar Assistant" in the returned results to install, and the installation process is completed by default, as shown in the following figure:

4. After adding, log in to your post account, and then reply to a post at will, and the small tail setting dialog box will pop up, as shown in the figure below:

5. Click on the tail to publish, and the text version of the small tail will pop up. Edit your text and you can publish it, as shown in the following figure: