Prepayment is required for standby tickets, which will be calculated based on the maximum amount of tickets in different combinations of orders (sleeper berth is calculated as lower berth fare).
After the prepayment for the waitlisted ticket is successfully paid, the system will continue to try to honor your waitlisted demand. If there are tickets that match your demand, the system will automatically generate a paid order for you. If the prepayment is greater than the actual ticket price, the system will automatically refund the difference in tickets. If the seat cannot meet your needs, the redemption will be automatically terminated at the redemption deadline. If the user voluntarily terminates or the system automatically terminates the waiting list, the system will automatically refund the full amount of the advance payment.