Every credit card has a billing date, and CCB is the due repayment date 20 days after the billing date. As long as the landlord returns the "all payable amount" shown on the bill before the due repayment date, the credit card can enjoy interest-free treatment.

Second, bring less cash.

Credit cards can be overdrawn for cash withdrawal, but there is no interest-free period. From the date of cash withdrawal, 0.05% of the cash withdrawal amount will be charged every day until the landlord repays it. There is also a cash withdrawal fee, the rate is 0.5% of the cash withdrawal amount, and the minimum is 2 yuan.

Third, pay attention to the annual fee.

Every credit card has an annual fee, but most CCB cards can be exempted from the annual fee if they are swiped to a certain amount (unlimited amount).

Fourth, you can't borrow.

The credit card is your own, and you must never lend it out. If something goes wrong after lending, the cardholder is fully responsible, and the bank only looks for you, not others.

Fifth, participate in activities.

There are quite a lot of bank activities at present. If you swipe your card to meet the requirements within a certain period of time, you will often send prepaid cards and movie tickets, which is very affordable.