China's high-speed rail network now exceeds 40,000 km — the world's largest. For most city-to-city trips, the train wins: it's punctual, frequent, and its stations sit closer to town than airports.
Rule of thumb: for journeys under 3 hours, take the train (10-minute security vs. 1 hour at the airport, plus shorter city transfers). Above 4-5 hours, flying often saves real time.
Booking: the official 12306 app (English interface, passport booking supported) or international platforms like Trip.com. Tickets open about 15 days ahead.
Seat classes: second class is the budget pick, first class is roomier, business class nearly flat-beds. Overnight routes offer sleeper berths that save a hotel night.
For groups or heavy luggage, intercity rideshare or a private car can work, though usually pricier than the train.