Trains tickets can be got from any Railway Stations in Beijing. We booked our soft sleepers 4 days in advance at Beijing East Station for RMB 417 on Z19 which was an all soft sleeper fast tain leaving at 7.28 pm and arriving at about 7.00 am. Children below 120 m travelled half price. We returned via Z 20 which leaves around 7.28 pm and arrived in Beijing at about 7.00 am.