The Z184 train from Baotou to Shenzhen, which runs for 33 hours, was carrying more than 1000 passengers in the evening of Feb 2. Many passengers fell asleep at night, while 46 staff members on the train stayed at their posts as night security for the sleeping passengers.

Staff member Zhang Yiyan checks train tickets in the conductor room at 23:41 pm, on Feb 2. [Photo/Xinhua]

Staff member Wang Zhe returns tickets to the passengers on arrival and reminds them to get off, at 6:25 am, on Feb 3. [Photo/Xinhua]

Staff member Zhang Jianxin (left) checks baggage, at 22:37 pm, on Feb 2. [Photo/Xinhua]

Staff member Qiao Yaxuan draws the train window curtains, at 23:30 pm, on Feb 2. [Photo/Xinhua]