1. Inter-bank transfer repayment: If the ICBC card has online banking or mobile banking, it can be repaid by inter-bank transfer. You can also remit money to CCB credit card at ICBC counter. This method is relatively slow to arrive at the account, generally at least 2 working days (excluding weekends and holidays). As ICBC is transferring, it should charge a certain handling fee (please ask the customer service of ICBC for specific standards), and CCB does not charge.

2. If you have Alipay, you can bind the ICBC card, and then use the "Credit Card Repayment" function on Alipay to transfer it to the CCB credit card. This way, there is no charge on both sides, and the time of receipt is relatively fast, and it will arrive the next day.

3. firstly, withdraw cash from ICBC card, and then deposit it on CCB credit card at CCB counter or ATM, without any charge. This method is a little troublesome, but it takes the fastest time to arrive at the account, and it is not easy to appear the situation of non-arrival. This method is recommended if there is a CCB outlet near the landlord.