Passengers who book tickets by telephone can exchange tickets at any station window or sales point in the country with their valid identity documents at the time of booking, thus realizing nationwide telephone booking. At the same time, the telephone booking time is extended by 12 hours, that is, tickets booked before 12:00 on the same day are valid before 12:00 on the next day; Tickets booked after 0/2: 00 on the same day are valid before 24:00 the next day.