Generally speaking, credit cards generate interest for two reasons. First, the landlord didn't repay in full according to the amount of "all payable amount in this period" shown in the bill before the due repayment date, and only paid a part, so the landlord won't enjoy the interest-free period of the credit card swiping part, and will charge five ten thousandths of interest every day from the date of swiping the credit card. Second, the landlord overdraws cash with a credit card and does not enjoy an interest-free period when withdrawing cash. From the date of acquisition, interest of five ten thousandths will be charged every day.

Calculated according to the interest-bearing principal 1 0,000 yuan, the daily interest = 1 0,000 * 0.05% * 0.5 yuan/day.