Short answer
On high-speed trains (G, D and C) there are four seat classes. Second class is a 2+3 layout and the standard fare — it is what most Chinese passengers buy and it is genuinely fine for trips under three hours. First class is a 2+2 layout with no middle seat, wider seats, more legroom and a footrest, for roughly 20–50% more. Business class is a 2+1 or 1+1 layout with seats that recline flat, and it costs a lot more.
On overnight trains you are buying a bed, not a seat. Hard sleeper is six berths in an open bay with no door; soft sleeper is four berths in a compartment with a lockable door and wider, longer beds. Both run on conventional Z, T and K trains and have high-speed equivalents on overnight D services.
The rule of thumb: under two hours, second class. Two to four hours, second class unless you want quiet. Over four hours in daylight, first class. Overnight, a sleeper — soft for privacy, hard to save money.
Seat classes on high-speed trains
| Class | Layout | Seat letters | What you get |
|---|---|---|---|
| Second class (二等座) | 3+2 — five seats per row | A, B, C | D, F | Standard airline-economy-style seat, and the most common seat on the train. |
| First class (一等座) | 2+2 — four seats per row | A, C | D, F | No middle seat. Wider seat, more legroom, a footrest, and a folding table in the armrest rather than on the seatback in front. Quieter cabin. |
| Premium first class (优选一等座) | 2+2 | A, C | D, F | A lighter version of business class on newer Fuxing trains: electrically adjustable seats, generous legroom, a "zero gravity" recline mode, but not fully flat. Only on certain new trains, so you will rarely see it. |
| Business class (商务座) | 2+1 or 1+1 — two or three seats per row | A, C, F or A, F | Reclines fully flat to 180° with a leg rest extending into a bed. Only 1–3% of a train's capacity, so under twenty seats per carriage. Meal service included. |
Two things about the layout explain most seat-selection confusion. First, A and F are always the window seats and C and D are always the aisle seats, in every class. Second, there is no seat E on a Chinese train: the lettering follows the aircraft convention, and because high-speed carriages never have more than five seats across, the middle letter is dropped so the window and aisle letters stay consistent.
That means seat B is always the middle seat in second class — the one to avoid if you can choose. On a 2+2 first-class row, A and C are on one side and D and F on the other.
What the upgrade actually buys you
| Second class | First class | Business class | |
|---|---|---|---|
| Seats per row | 5 (3+2) | 4 (2+2) | 2 or 3 |
| Middle seat | Yes — B | No | No |
| Recline | Partial | Partial, with footrest | Fully flat, 180° |
| Typical price vs second class | Baseline | Roughly 20–50% more, route-dependent | Several times the second-class fare |
| Best for | Most trips | Long daytime journeys | Rest, or a treat |
Sleeper classes
Sleeper tickets exist on conventional overnight trains (Z, T and K series) and on overnight high-speed D services. They are not a seat with a better recline — they are a bunk, and the class names describe the space, not the mattress.
| Class | Berths per bay or compartment | Door | Found on |
|---|---|---|---|
| Hard sleeper (硬卧) | 6 — two upper, two middle, two lower, three on each side of an open bay | No, usually | Z / T / K trains |
| Soft sleeper (软卧) | 4 — two upper, two lower, in an enclosed compartment | Yes, lockable | Z / T / K trains, and some overnight high-speed services |
| Deluxe soft sleeper (高级软卧) | 2 — a private cabin | Yes | Selected Z / T / K trains |
| Second-class sleeper | 6-berth cabin (upper / middle / lower) | Enclosed cabin | Overnight D trains |
| First-class sleeper | 4-berth cabin (upper / lower) | Enclosed cabin | Overnight D trains |
The differences that matter between hard and soft sleeper are not really about the bedding:
- Six bunks versus four. A hard sleeper carriage is an open bay with no door, so noise and light travel freely. A soft sleeper compartment has a door that closes and locks, which is the single biggest quality difference.
- Can you sit up? In a hard sleeper, the middle and upper berths are too close together to sit upright, you lie down or you perch in the corridor. In a soft sleeper, all berths are tall enough to sit up in.
- Bed size. Soft sleeper berths are wider and longer than hard sleeper berths. Tall or broad passengers notice this immediately.
- Luggage. Soft sleeper compartments have a storage area inside; hard sleeper passengers use racks over the corridor outside the bay.
- Deluxe soft sleeper adds a private cabin with a sofa, a closet and an en-suite toilet, and on some conventional trains a shower.
How to choose, by trip length
| Your trip | Buy this | Why |
|---|---|---|
| Under 2 hours | Second class | The whole journey is a coffee and a chapter of a book. The upgrade is wasted. |
| 2–4 hours, daytime | Second class, or first class if you value quiet | This is where the upgrade starts to be defensible, especially if you are working. |
| 4+ hours, daytime | First class | Legroom, no middle seat and a quieter carriage make a real difference by hour four. |
| Overnight | Soft sleeper if you want a door, hard sleeper to save | You are paying for sleep, not transport. A door and a berth you can sit up in decides whether you arrive rested. |
| Long daytime trip, money no object | Business class | The only class where the seat goes fully flat, and it comes with a meal. |
Things that surprise first-time passengers
- Seat numbers work like an aircraft. A row number and a letter,
12Ais row 12, window. Your carriage number is the number before the seat number on the ticket. - Hot water is free in every class. There is a boiler at the end of each carriage and paper cups are provided, which is why so many passengers travel with instant noodles.
- Do not count on on-board Wi-Fi. Coverage has been unreliable for years. A Chinese SIM or eSIM with mobile data is the dependable option.
- A no-seat ticket exists. On some trains a standing ticket (无座) is sold. You still need it to board.
Frequently asked questions
What is the difference between first and second class on a Chinese high-speed train?
Second class is a 3+2 layout with five seats per row, including a middle seat. First class is 2+2 with no middle seat, wider seats, more legroom, a footrest and a quieter cabin. First class typically costs about 20–50% more than second class, with the gap varying by route and train.
Is first class worth it in China?
Under two hours, generally no; the seat is better but you will not be in it long enough to care. Past three hours, yes: the legroom, the absence of a middle seat and the quieter carriage make a noticeable difference, and on many routes the price gap is smaller than people expect.
Does business class recline flat?
Yes. Business class is the only high-speed seat class that reclines to a full 180° with a leg rest extending into a bed. First class and second class recline only partially. Business class is also very limited in number, usually 1–3% of the train's capacity.
What is the difference between hard sleeper and soft sleeper?
Hard sleeper has six berths in an open bay with no door, and the middle and upper berths are too low to sit up in. Soft sleeper has four berths in an enclosed compartment with a lockable door, wider and longer beds, and enough height to sit up on every berth. Soft sleeper is the one to book if you want to actually sleep.
Why is there no seat E on Chinese trains?
Because the lettering follows the aircraft convention, where A and F are window seats and C and D are aisle seats. High-speed carriages never have more than five seats across, so the middle letter is dropped to keep the window and aisle letters consistent across every class and layout.
Which seat letter is the window?
A and F are always window seats, in every class. C and D are always aisle seats. In second class, B is the middle seat of the three-seat block, so avoid it if you can choose.
Is the lower berth worth the extra cost?
Usually yes if you are travelling overnight and want to be rested. The lower berth is the only one in a hard sleeper where you can sit up comfortably, and it avoids climbing. It also costs the most, with the middle berth next.
What class should I book for a long daytime trip?
First class. Four hours in a second-class middle seat is the point at which the upgrade stops being a luxury. If you want to sleep through the journey, business class is the only option with a flat bed, but check the price against a flight first.
Related reading
Seat layouts, seat-letter conventions, class characteristics, sleeper configurations and berth pricing order follow China Railway's published explanations and 12306's ticketing information, current as of September 2026. Fares, price gaps and the availability of premium first class or specific sleeper types vary by route, check the real options and prices on 12306 for your journey.