One day's interest is calculated from the day of borrowing, not the last day of repayment. Counting the first and not counting the last is a way for banks to determine the interest period of deposits and loans, that is, the loan interest is from the date of issuance to the day before repayment, and the repayment date is not counted. For example, if the deposit date of a deposit is1May 3, 992 and the withdrawal date is the 25th of the current month, the interest-bearing days shall be counted from May 3 to the day before the 25th, that is, to the 24th, that is, 22 days.