standing sleeper word

i have a standing only six hour train ride tomorrow to Henan. i bought this handy stool for sitting at the queues of Expo last year. i will pack lightly. on the way back, i have a sleeper bed on a thirteen hour train. i found a train ticket office right around the corner from where i live, which makes me want to book trains more often. an hour ago i looked up the Chinese word for "hard sleeper", used the word to book one. now, an hour later i cannot remember the word. heh.