What do you think of the seat number of Tongcheng bus ticket?

I read it in a text message. Tongcheng bus ticket belongs to online shopping ticket. After the online ticket is successfully purchased, the railway will send you a short message of successful ticket purchase, and your seat number and other information will be included in this short message. Tongcheng bus ticket has launched the booking function, which supports booking bus tickets within 75 days. After the user selects the date, the payment will be made in advance. When tickets are pre-sold, the system will automatically purchase tickets. If the ticket issue fails, the system will automatically refund it.