The steps are as follows:
1. Open the client of Superstar Mobile Library and click the avatar.
2. At this time, it will show that you have not logged in, and then click on the avatar.
3. Then you will automatically locate the list of nearby libraries, choose your own library, enter the password of your library card account, and click Login.
4. Then you will jump to the following interface, showing that you have logged in successfully.