1. First, prepare the corresponding materials and information according to the requirements of Bank of Nanjing, such as cardholder identity certificate, credit card number, name, etc.

2. Then fill in the personal information and reason for cancellation according to the instructions of the bank customer service or the corresponding application form on the bank website.

3. Next, mail or hand-deliver the completed application form and required materials to the designated department or outlet of Bank of Nanjing.

4. Finally, wait for the bank to process the application. Once the application is successful, Bank of Nanjing will send a confirmation letter or notify ncard that the credit card cancellation is successful.