Interest on credit card installment of Lanzhou Bank = unpaid amount * unpaid days *0.05%. In fact, the interest of credit installment is generated when the repayment is overdue. The normal use of Lanzhou Bank's credit card in installments will not generate interest, but will only generate installment fees. If interest is generated when credit card is used for installment payment, overdue repayment may occur. It is recommended that you repay the loan on time, because it will be overdue.