China Merchants Bank credit card has no concept of different places. You can repay at any China Merchants Bank outlet. If you don't have a local outlet of China Merchants Bank, but there are other banks (except Postal Savings Bank), you can make telegraphic transfer repayment in other banks. You need to bear the cost of wire transfer.

The ABC card can only withdraw cash or inquire about the balance at CCB's ATM, and cannot transfer money to China Merchants Bank.

Wire transfer is ok, and the account number is your credit card number. But only for repayment of RMB bills.