This word refers to a repayment method of credit card, also called automatic repayment.

Specifically, the cardholder binds the personal credit card to the personal savings card and automatically deducts the payment from the savings card account on the repayment date.

This repayment method can effectively prevent the loss caused by the cardholder's forgetting to repay, but the premise is to ensure that the balance in the savings card is sufficient and avoid automatic repayment failure.