Lhasa, Tibet is a high-altitude area. Taking the train to Lhasa, Tibet, the train runs for a long time, and the altitude will increase a little bit. The increase in altitude will trigger altitude sickness. You must pay attention to the following matters, which is also beneficial to yourself. I suggest that you&;d better buy a berth ticket, and don&;t choose a hard seat to save money. First of all, taking a hard seat by train is a real torture, and secondly, it is not only tiring but also easier to get tired, which will also aggravate altitude sickness. Except for the Z6801 train originating from Xining, all other trains will stop at Xining for a while, and then transfer to an oxygen train. You don&;t have to worry too much about altitude sickness. Just take your luggage and keep your mind normal during the transfer.