Two things about Chinese trains are not obvious from a booking screen, and both of them decide what your day is like.
The first is the letter in front of the train number. It is not a brand — it is the service class, and the difference between a G and a K on the same route can be twelve hours.
The second is that “sleeper” means six different things at six different prices, arranged in a hierarchy that no booking site explains.
The letters, in order of speed
| Letter | What it is | Speed |
|---|---|---|
| G | High-speed, the fastest class | Up to 350 km/h |
| D | High-speed, slower and more stops | 200 – 250 km/h |
| C | Intercity, short hops between neighbouring cities | High-speed |
| Z | Direct express, conventional, mostly overnight | Up to 160 km/h |
| T | Express, conventional, more stops | Up to 140 km/h |
| K | Fast train, conventional, many stops | Up to 120 km/h |
Checked 14 Aug 2026 Service classes per TravelChinaGuide. “K” stands for kuaisu, fast — which it is, relative to the stopping services it replaced in the 1990s, and not relative to anything you will otherwise ride in China.
Booking platforms sort by price by default. On many routes a K train is cheaper than a G and appears above it. Guilin to Guangzhou is two and a half hours on a G and four to five on a D, for a similar second-class fare. Sort by duration, not price.
The bunks
Anything overnight means choosing a berth class, and the names are misleading. “Hard sleeper” is not hard, and “soft sleeper” is not the top of the range.
-
1
Hard sleeper
Six bunks in an open bay with no door, stacked three high, opening onto the corridor. The mattress is thin but it is a mattress. The upper bunk is cheapest, has the least headroom, and is the one nobody sits on during the day — which on a long daytime leg is a genuine consideration.
This is how most of China travels overnight, and it is sociable in a way the soft sleeper is not.
- Layout
- 6 bunks, open bay, 3 high
- Fare
- CNY 200 – 600
- Door
- None
-
2
Soft sleeper
Four bunks in a compartment with a door that locks, stacked two high. More space, better bedding, and you can shut out the corridor. For a couple travelling together this is usually the right answer; for two people in a four-berth compartment it means sharing with two strangers.
- Layout
- 4 bunks, lockable compartment
- Fare
- CNY 300 – 1,000
-
3
Deluxe soft sleeper
Two berths, upper and lower, with a table, a sofa, a wardrobe and a private toilet. Found on Fuxing sets. It is the only conventional class where two people travelling together get the compartment to themselves.
- Layout
- 2 berths, private toilet
- Fare
- CNY 1,000 and up
-
4
The high-speed sleepers
A separate hierarchy, on overnight G-services running routes of more than about ten hours. Second class sleeper, first class sleeper with a lockable door, and an EMU deluxe cabin with a shower.
These are newer, cleaner and considerably more expensive than the conventional equivalents, and they exist on a small number of routes rather than everywhere.
- Where
- Overnight high-speed routes over ~10 h
- Top class
- Private cabin with shower
Checked 14 Aug 2026 Berth configurations and fare bands per TravelChinaGuide and current sleeper-class listings. Fare bands are wide because they cover routes of very different lengths — a hard sleeper is priced by distance, not by comfort. Deluxe soft sleepers run on Fuxing sets; older soft sleepers on Hexie sets.
When the train beats the plane
The rule people give is “under five hours, take the train”. That is roughly right but it misses why.
Chinese airports are far out and Chinese railway stations are usually on a metro line. Domestic flights also suffer chronic delays. So the comparison is not four hours against ninety minutes — it is four hours station-to-station against ninety minutes plus two airport transfers, plus security, plus the delay.
| Rail journey | Take |
|---|---|
| Under 5 hours | The train, without thinking about it |
| 5 to 8 hours | The train if it is a G, the plane if it is a D or slower |
| Over 8 hours by day | Fly |
| Over 10 hours overnight | The sleeper — it buys you a hotel night |
The overnight case is the one people undervalue. A sleeper that leaves at 20:00 and arrives at 07:00 costs you no daylight and no hotel. On a two-week itinerary that is a full extra day of trip.
Booking, for a foreign passport
- Tickets open 15 days before departure. Not months. This is the single biggest difference from European rail planning.
- You need the physical passport to buy a ticket and to enter the station at all. The name must match exactly.
- The 12306 English app is the railway’s own platform and is available to foreign passport holders. Resellers charge a fee for the same seat.
- Berth position is usually assigned, not chosen. If the upper bunk matters to you, book early rather than expecting to pick.
- Arrive 40 minutes early at a big station. Security, ID check and the walk to the platform take longer than they should, and gates close before departure.
Checked 14 Aug 2026 Booking window and passport requirements per current rail-ticketing guidance. One source states the rule as 14 days including the day of travel, which is the same window counted differently. The railway has changed this window before.
Two things worth knowing before a long ride
- Hot water is free and everywhere. Every carriage has a boiler. This is why every Chinese passenger boards with instant noodles and a flask, and why you should too — dining car food is poor and expensive.
- Conventional trains have squat toilets. High-speed trains have both. On a K train overnight, that is worth knowing in advance.
Public traveller reports through 2026 consistently rate soft sleeper as worth the difference over hard sleeper on any journey over about twelve hours, and consistently describe the lower bunk as worth paying for. The most frequently recorded surprise is how early the carriage lights go out and come back on.
Summarised from public traveller discussion, not from a visit. We have not travelled these routes ourselves — see how we check.