according to the credit card regulations of China Bank, the grace period of China Bank's credit card varies according to the card grade. This means that gold and ordinary cardholders should complete the repayment within 3 days after the repayment date at the latest, while platinum credit card holders have a grace period of up to 9 days. Usually, the repayment must be completed before 2: pm on the last day of the grace period at the latest, so even if it exceeds the grace period, it will still be regarded as normal repayment.