After the college entrance examination, I want to travel along the Qinghai-Tibet Railway. If I buy a full ticket from Xining to Lhasa, I can get off the train halfway and get on the train with my ticket. The Qinghai-Tibet Railway implements a real-name system, and you need to provide your ID information when purchasing tickets, so you can get off the train halfway, then reboard at the next stop with your ticket and ID card to continue traveling, and there is no need to buy a new ticket every time you get off the train.