How to use the CITIC co-branded Ctrip credit card as a Ctrip member is as follows:

1. Open the Ctrip APP and log in to your account.

2. After entering the main interface of Ctrip APP, click the "My" option in the top navigation bar.

3. On the "My" page, find and click the "Credit Card" option.

4. After entering the credit card page, select "Payment and Settlement" or a similar option.

5. On the payment and settlement page, select CITIC Bank co-branded credit card as the payment method.

6. Enter the amount to be repaid and click "Confirm Repayment" or a similar button.

7. After confirming the repayment, complete the repayment process according to the system's guidelines.

8. After successful repayment, you will receive corresponding Ctrip membership rights.