Xiaomi loan is a loan service with daily interest and equal repayment of principal and interest. As long as the loan contract is not settled, interest will be calculated according to the remaining unpaid amount every day to ensure the same repayment amount in each installment. Therefore, during the period from the prepayment date to the repayment date, interest will still be generated, resulting in the current bill not being fully paid off, and repayment is still needed on the repayment date, which is caused by the equal principal and interest algorithm.