China Travel tips
The toilets on trains tend to be a little more "usable" than on buses or most public areas because they are simple devices that empty the contents directly onto the track and thus don't smell as bad. Soft sleeper cars usually have European throne-style toilets at one end of the car and Chinese squat toilets at the other. Be aware that on non-CRH trains if the train will be stopping at a station, the conductor will normally lock the bathrooms prior to arrival so that people will not leave deposits on the ground at the station.
Long distance trains will have a buffet or dining car, which serves hot, but generally overpriced, at ￥25 or so and frankly not very tasty, food. The menu will be entirely in Chinese, but if you're willing to take the chance, interpret some of the Chinese characters, or ask for common dishes by name, you can eat very well. If you are on a strict budget, wait until the train stops at a station. There are normally vendors on the platform who sell noodles, snacks, and fruit at better prices. Trains generally have boiled water available so bring tea, soups and instant noodles to make your own food.
Be careful with your valuables while on the train; property theft on public transportation has gone up in recent years.
On most higher-level trains (T, K, Z and CRH trains) pre-recorded announcements are made in Chinese, English and occasionally Cantonese (if the train serves Guangdong province or Hong Kong), Mongolian (in Inner Mongolia), Tibetan (in Tibet) or Uyghur (in Xinjiang). On local trains there are no English announcements so knowing when to get off can be harder.
Motion sickness pills are recommended if you are inclined toward that type of ailment. Ear plugs are recommended to facilitate uninterrupted sleep. In sleeper cars, tickets are exchanged for cards on long distance trains. The cabin attendants return the original tickets when the train approaches the destination station thus ensuring everyone gets off where they should even if they can't wake themselves up.
If you have some things to share on the train, you'll have fun. The Chinese families and business people traveling the route are just as bored as the next person and will be happy to attempt conversation or share a movie shown on a laptop. All in all, the opportunity to see the countryside going by is a neat experience.
You'll need your ticket to enter and exit the station - usually there will be an inspection at the departure hall entrance or the boarding gate and another at the exit gate. Once in the departure hall, follow the digital indicator boards to find the right boarding gate (they are in Chinese but will display the train service number which is printed at the top of your ticket). Approx 10 minutes before boarding your train and platform will be announced and the gate will be opened, just follow the crowd to the platform - at larger stations the train will already be waiting, in smaller stations look for your car number written on the platform edge - make sure you're waiting in the right place because often the train will only stop for a couple of minutes. Some newer stations have high-level platforms that are level with the door, but at smaller stations the platforms are very low and you have to ascend several steep steps to board the train so be prepared if you have a large suitcase. Generally passengers are friendly and will offer to help you with bulky luggage.
Smoking is not permitted in the seating or sleeping areas but is allowed in the vestibules at the end of each car. On the new CRH trains, the Guangzhou-Kowloon shuttle train and the Beijing Suburban Railway smoking is completely forbidden. Smoking is banned inside station buildings apart from in designated smoking rooms, although these places are often unpleasant and poorly ventilated.