Shifu,
News you can use. According to an official of Beijing Railway Station, residents can dial 65260000 to book train tickets from between 2 to 20 days ahead of time. Currently, residents can book tickets between 3 and 21 days ahead of time for all the MU (multiple unit) trains and non-stop trains departing from Beijing Railway Station, Beijing West Railway Station, Beijing South Railway Station or Beijing North Railway Station, and also can book tickets between 3 and 11 days ahead of time for the K and T-trains departing from the 4 stations. They can book any number or kind of tickets.
Tim Duehring