not all ICBC credit cards can be extended. If there is no grace period, they must repay it on the repayment date. Some industrial and commercial credit cards can have a three-day repayment grace period, so after repayment, they can postpone repayment for three days. Repayment within these three days is regarded as normal repayment by users and will not generate overdue interest.
users can directly call the customer service hotline of ICBC to check whether there is a grace period for their credit card repayment. If not, they must repay on time.