It is possible that the balance of the bound card is insufficient or the credit card has expired.

Credit card consumption is a non-cash transaction payment method, and there is no need to pay cash when spending, and repayment is made on the billing day.

Credit cards are divided into credit cards and quasi-credit cards. Credit card refers to a credit card in which the cardholder has a certain credit limit and can spend first and then repay. Quasi-credit card refers to a quasi-credit card in which the cardholder deposits a certain amount of reserve fund according to the regulations, and when the balance of the reserve fund account is insufficient to pay, it can be overdrawn within the prescribed credit limit. Credit cards generally refer to credit cards.