What the Letter D Actually Means
Every Chinese train number starts with a letter, and the letter is a promise about the track, the speed and the price. G means the fastest high-speed service. D means the ordinary electric multiple unit — the workhorse of the network rather than its showpiece. A D train runs at a maximum of 200 to 250 kilometres an hour. The difference in design has a practical consequence: a D train can run on both purpose-built high-speed lines and older electrified railways that have been upgraded, while G trains are restricted to the modern high-speed network. D services therefore reach cities and county-level towns that no G train touches at all.
Pricing follows the track. On the Beijing to Shanghai corridor a G train second-class seat is published at roughly 553 to 697 yuan, while a D train second-class seat runs about 367 to 406 yuan — a saving of roughly a third for one to two extra hours in transit. Across the network, D fares work out at about 0.31 yuan per kilometre against roughly 0.46 for G.
Speed Is Not the Same Thing as Time
The most common mistake is assuming a G train is always faster. It frequently is not. On a route where a G service stops at a dozen intermediate stations, it spends its advantage on repeated braking and acceleration, and a D train that runs almost non-stop can arrive first over a medium distance. G trains hold the highest dispatching priority, so a D train may be held at a station to let one pass.
The practical rule is to compare total elapsed time rather than the letter. Look at the departure and arrival times, not the train code.
The Sleeper EMUs: A Hotel That Moves
The most interesting half of the D family is the sleeper EMU, known in Chinese as dongwo — literally "moving sleeper." These overnight trains leave in the evening and arrive the next morning, and they have become the best-value long-distance product in China for anyone paying for hotel nights.
Two generations operate today. The first is the classic high-speed sleeper, built on CRH2E and CRH1E stock, running at 250 kilometres an hour: four-berth compartments with a sliding privacy door, berths set crosswise, a second-class seating car and a dining car. A few trains carry one carriage of deluxe two-berth sleepers with a sofa and wardrobe.
The second generation is the power-concentrated Fuxing unit, the CR200J, which has replaced conventional Z-class trains on a growing list of trunk corridors. On this stock the classes catch people out: you book a first-class sleeper or a second-class sleeper, and the fare is calculated on the soft-sleeper rate rather than the cheap hard-sleeper rate that applied to the train it replaced. On the Beijing to Shanghai line the old Z-class hard sleeper was about 304.5 yuan; the equivalent second-class sleeper on CR200J stock is about 476 yuan for a similar overnight run.
What you get for that is a newer carriage. The Fuxing sleeper units use a wide-body drum-shaped profile, a raised berth floor and a widened aisle storage area. First-class sleepers are lockable enclosed compartments with independent climate control. Every berth has a blackout curtain, a reading light, and both USB-A and USB-C fast-charging sockets, with 220-volt outlets in the aisle.
Live Sample Fares and Timings
The table is a snapshot of published timings and fares for 30 September 2026, taken from Chinese ticketing data. Treat it as orientation, not as a quotation: fares are dynamically priced and 12306 publishes the authoritative figure for your date.
| Service | Route | Departure and arrival | Journey | Sample fare |
|---|---|---|---|---|
| D5 | Beijing to Shanghai | 21:21 to 09:27 next day | 12h 06m | second-class sleeper 508 CNY, first-class sleeper 686 CNY |
| D7 | Beijing to Shanghai | 19:18 to 07:25 next day | 12h 07m | second-class sleeper 474 CNY, first-class sleeper 644 CNY |
| D901 | Beijing West to Shenzhen North | 19:42 to 08:18 next day | 12h 36m | sleeper berth about 970 CNY |
| D902 | Shenzhen North to Beijing West | 18:25 to 06:32 next day | 12h 07m | upper berth 885 CNY, lower berth 995 CNY |
| D102 | Xining to Beijing West | 15:40 to 14:31 next day | 22h 51m | sleeper classes, verify on 12306 |
Sleeper fares float. Off-peak departures can discount heavily, and a discounted berth has been recorded below the day-time second-class seat on the same route.
The Newest Sleeper Services to Know About
This is the part of the network that moves fastest, so verify each one before you build a plan around it.
- 1 July 2026. The D102/101 Xining to Beijing West power-concentrated sleeper began running — the first direct sleeper EMU from the Qinghai-Tibet Plateau to the capital. It uses a 460-metre formation of 18 carriages with a capacity of 1,012, replacing the Z151/152 service that had run for 63 years. Xining to Beijing West takes 22 hours 51 minutes.
- 22 August 2026. Hengyang East and Chenzhou West gained their first sleeper EMU departures, with D4997 and D4998 running on Saturdays and Mondays. A Changsha South to Guangzhou South upper berth was priced at 300 yuan — less than the 358 yuan second-class seat departing half an hour later.
- 10 September 2026. China Railway published its National Day holiday plan: 16 days of transport from 23 September to 8 October and 304 extra temporary services. Beijing West to Shenzhen North D901/902 gains departures on 30 September and 1, 2, 7 and 8 October; Beijing West to Hong Kong West Kowloon D909 runs on 23, 24, 29 and 30 September and 1, 6, 7 and 8 October.
What Overnight Rail Replaces in Your Itinerary
A sleeper EMU replaces two things at once: a hotel night and a travel day. You board after dinner, sleep through the distance and start the next morning in a new city with your whole day intact. That suits particular travellers: couples and small groups who want a four-berth compartment to themselves, families who do not want to repack twice, and anyone building a long north-to-south itinerary on a fixed calendar. If your group is larger, or your interests are specific, a private programme may fit better than any scheduled train — our leisure tour team builds those, our student travel desk handles school and university groups, and our corporate visits team runs business and incentive programmes.
What you give up is flexibility. Sleeper EMUs do not run on every corridor every night, several services operate only from Thursday to Monday or around holidays, and the railway runs a one-day-one-diagram system. Onboard, the night service runs quietly from 22:00 to 06:00, with staff waking passengers point to point rather than making announcements.## Booking and Boarding
Book through the official 12306 site or app. China Railway states that 12306 is its only official online sales channel and that it works with no third-party platforms. Agent sites sell as resellers with their own fees, and no legitimate channel charges an "acceleration" surcharge.Tickets open 15 days before departure, and the sleeper product differs from the day trains here: berths sell out first, and popular holiday departures go within minutes. The waitlist function is the practical answer, and in the holiday plan the railway states that newly released quota goes to waitlisted orders first.
A foreign passport is accepted, but it must pass identity verification through 12306 or at a station window before a first booking. At the station, use the manual inspection channel rather than the automated gates and travel with the same document you used to book. For the wider ticketing picture, the foreign passport booking walkthrough takes the process step by step.
One detail worth knowing: some newer D trains have dropped the traditional dining car and replaced it with QR-code ordering and same-day prepared meals.
Frequently Asked Questions
Is a D train always slower than a G train?
No. A D train has a lower top speed, but if it stops less often it can match or beat a G service over a medium distance. Compare the actual departure and arrival times rather than the letter.
Can foreigners book a sleeper EMU berth online?
Yes, once your passport has passed 12306 identity verification. Berths are the first things to sell out, so book as soon as the 15-day window opens and use the waitlist if your first choice is gone.
Is a first-class sleeper worth the extra cost?
On CR200J stock it is a lockable enclosed compartment with independent climate control. It is worth it on 20-hour-plus runs and for families; on a 12-hour overnight the second-class sleeper is private enough for most travellers.
Do these trains have charging points and internet?
Current Fuxing sleeper stock gives every berth USB-A and USB-C fast-charging sockets and a reading light, with 220-volt outlets in the aisle. Onboard connectivity on long routes is inconsistent.
Sources
- China Railway, National Day and Mid-Autumn holiday transport plan and ticket release notice, 10 September 2026
- China News Service, Xining and the Qinghai-Tibet Plateau gain their first direct sleeper EMU to Beijing, 1 July 2026
- Qinghai Provincial Development and Reform Commission, summer rail performance summary, 9 September 2026
- China Railway Group, 2026 summer transport results including foreign passenger figures, 1 September 2026
- China Daily, night high-speed and sleeper EMU services during the holiday period, 23 September 2026
- Baidu Baike, sleeper train and night sleeper EMU reference entries, updated 2026
- Rail ticketing timetable and fare data for 30 September 2026
- Authorised booking agents, published class and fare documentation for CR200J and CRH2E stock, 2026
