It must be the z165 train from Shanghai to Lhasa ~ Take the train to Lhasa. The main scenery is on the Qinghai-Tibet Plateau. You only need to see the scenery of the Qinghai-Tibet Plateau from Golmud to Lhasa, and it also passes through the no-man&;s land of Hoh Xil. At present, there are 7 trips to Lhasa by train. From the train schedule, almost all trains in Chengdu and Chongqing pass through the Qinghai-Tibet Plateau at night, so there is nothing to see at night.