Valid ID is required when foreigners book train tickets in China.
Permissible forms of ID include:
Residence Permit for Foreigners (including Permanent Residence Permit for Foreigners), Alien’s Exit-entry Permit, diplomatic certificate, consulate certificate, seaman's certificate, ID certificate issued by China’s Ministry of Foreign Affairs, police report for a lost passport issued by the exit and entry administration departments of local public security bureaus, and temporary ID for train travelers provided by railway public security departments.