If it is a China Merchants Bank credit card, you can enjoy the interest-free period for swiping the card. The interest-free period means that if you pay off all the consumption before the final repayment date, you do not need to pay any interest. The interest-free period for repayment ranges from 20 to 50 days, and the length of time will depend on the specific time of your consumption. If your consumption is before the current bill date, it will be included in the current bill; if it is after the bill date, it will be included in the next bill, and you can enjoy a longer interest-free period.