I still don't understand why xuzhou east sometimes turns the chair, and sometimes he doesn't.

As high-speed railway station, Xuzhou East Railway Station usually needs to change the seat direction after the train arrives at the station, because the seat direction of the high-speed rail is related to the running direction of the train.

Specifically, when the high-speed rail travels from south to north, the seat direction needs to face south; When the high-speed rail travels from north to south, the seat direction needs to face north. This design is to give passengers a better view and comfort when the train is running.

However, in some cases, Xuzhou East Railway Station may not need to change the seat direction every shift. This may be because the direction of the train is always the same, or it may be because the station chooses not to change in order to improve efficiency.

Generally speaking, the change of seat orientation in Xuzhou East Station depends on the specific situation, including train orientation, station work efficiency and other factors. If you need to confirm the seat direction of a specific flight, you can consult the station staff or check the information on the ticket.