Bound the bank card. The banking system will automatically deduct money on the last repayment day of each month on the premise that the bank card has a balance, and the credit card will take 1000. If the bank card balance is less than 1000. How much will be deducted then? If you repay 1000 in person before the final repayment date, the money will not be deducted. If you don't pay back 1000, you will only pay back part of it, and it will still deduct money from it on the last repayment day to reach the amount owed on your bill. If there is not enough money in the bank card, your minimum repayment amount will be calculated by default. Interest will be calculated.