The CCB contract automatic repayment service is

"Golden Butler" transaction replenishment service. China Construction Bank has signed an automatic replenishment service. When the card balance is insufficient, the system will automatically transfer funds from the main account to the associated account to replenish the transaction amount in a timely manner, avoiding the embarrassment of being unable to pay. It is called the "Golden Butler" transaction replenishment service. China Construction Bank, whose full name is China Construction Bank, is a joint-stock commercial bank and one of the five largest state-owned commercial banks.