Binding a credit card to a savings card is the automatic repayment function of an agreed account. Query method: 1. The landlord carries his ID card, credit card and savings card to the counter of CCB outlets for enquiry. If there is no binding, you can handle it through the counter.

2. If the landlord has opened personal online banking, you can check it through personal online banking. If it is an online banking contract (with U shield), if it is not bound, it can be bound on the online banking. You can also use signature mobile banking. It's all in the credit card management

3. Call the customer service hotline, or handle this business through manual service of the customer service hotline.