① this sum can increase the available credit card limit or be directly used for consumer repayment;
② If there is overpayment in the credit card, the overpayment will be deducted first, and then the credit line will be deducted. If the overpayment is greater than the consumption amount, there will be no overdraft;
③ For example, 9 yuan needs to be repaid in this period, and 1 yuan is actually repaid, and the extra 1 yuan is overpayment;
④ If you deposit money into the credit card in advance without spending, you can't get this part of the money. If you want to withdraw it, you will charge a high handling fee, so you should try to avoid it.
⑤ Overpayment does not bear interest.