If it is bound, it will be automatically deducted from your debit card on the repayment date. If the deduction on your card is less than that of 500 yuan, you will be informed by SMS. If it is insufficient, you will be asked to repay it the day before yesterday. The minimum repayment amount of CCB is generally 65,438+00% of your consumption amount, which seems to be different next time. You are advised not to use the minimum repayment amount. Although the minimum repayment will not affect your credit, the interest is high. I suggest you do what you can. If you want to buy it, it is recommended not to pay the minimum amount. It's best to pay by installment. In addition, CCB defaults not to repay in full. In addition, if you choose to pay in full when binding at the front desk, you must call the service number, mobile phone 4008200588 fixed line 8008200588. I suggest you ask customer service if you don't understand anything. If this card doesn't work well. . . . Besides, please don't mislead others upstairs. The interest-free period is generally not 50 days. The interest-free period is from the bank bookkeeping date to the repayment date, with a minimum of 20 days and a maximum of 50 days. If the calculation is not good and you forget to repay, but there will be a penalty interest, it is recommended to bind, don't worry about forgetting to repay, thank you.