If China Merchants Bank uses a credit card, you can enjoy an interest-free period for credit card consumption. Interest-free period means that you don't have to pay any interest if you pay off all the consumption money before the final repayment date. The interest-free repayment period is 20 days to 50 days, depending on the specific time of your consumption. If your consumption is before the current bill date, it will be included in the current bill; You can enjoy a longer interest-free period if you include it in the next bill after the bill date.