Log in and return the app-I- my bank card. If there is only one savings card in the system, click "Add Repayment Savings Card" to complete the card binding operation, click the bank card that needs to be set as an automatic repayment savings card, and select "Set as an automatic repayment savings card". If there are multiple savings cards in the system, click the bank card that needs to be set as an automatic repayment savings card, and select "Set as an automatic repayment savings card".