Subway is obviously the fastest and safest form of commuting traffic.
They are scheduled and frequent, not being affected by bad weather or heavy traffic.
In China, train is definitely the most available and affordable form of transportation for long distances.
Unlike a plane, train's soft seats and berths are more comfortable, as well as room-ier. Adjustable footrests, tables and chair recliners are all within easy reach.
Planes are known for long security lines and strict rules for carry-on items. Trains,however, have very short lines and less restriction on hand luggage.
Speaking of food, airplanes have long been known for small meals that lack taste. First class is supposed to have something with higher quality, but that means paying the extra cost for first-class seating.
Trains, however, provide much more choices when it comes to dining.
With large windows on all sides, train riders can view the passing scenery if they choose to.
While taking a train can be cheaper, nothing beats an airplane in speed.
While watching a plane take off can be amazing, it is a rather short experience. Once inflight, looking out a window will usually reveal nothing but white clouds.