Why did I send a short message on 12306 to adjust my seat, and then log in to check or adjust my previous seat? Do you need to call customer service?

If you don't need it, you can take the bus according to the seat on the ticket.

When passengers cannot take the bus according to the date, train number, seat and berth recorded on the ticket due to railway responsibility, the station and bus will be rearranged appropriately. If the rescheduled train, seat and berth are higher than the original ticket level, the excess fare will not be replenished; If the ticket is lower than the original ticket, the bus station or station will refund the fare difference, and no refund fee will be charged.

For the ticket visa, if the passenger can't take the bus according to the date and train number indicated on the ticket face, he can go through the boarding formalities in advance or later, but not more than 2 hours before driving at the latest, and the validity period of the ticket will be accelerated without extending it, if the listed countries have the ability. When passengers get off the train at the transfer station and resume their travel, they should go through the visa formalities no matter what kind of train they take.

The weight of passengers' belongings is free, 20 kg for adults and 0 kg for children/kloc-0. The length and volume of personal belongings should be suitable for the luggage rack or under the seat, and articles that hinder public health and pollute the vehicle should not be brought into the car. In the car, whether it is day or night, especially at night, remember not to sleep with strangers to see the bag in turn.