1. Open the Smart Campus APP and enter the personal center page.

2. On the Personal Center page, find and click the "Account Settings" option.

3. On the account setting page, find and click the "Signature" option.

4. On the signature page, enter the signature you want to set, and you can add personalized symbols or pictures to make the signature more personalized and distinctive.

5. After confirming the signature, click the Save button to complete the signature setting.