1. First, open the CCB App and click Enter.

2. Then enter the homepage of CCB and enter personal information to log in.

3. Enter the mobile banking APP and navigate to select a credit card at the bottom of the homepage.

4. Enter the credit card interface, select card service in the interface, and click Enter.

5. Enter the card service interface, find "Interest Rate Inquiry" under "Card Service" in the interface, and click Enter.