Originally Posted by
valdor
Sleeper trains can be a superior option on some routes. For example, in China you can get on a high-speed sleeper train in Beijing around 8h30pm and arrive in Shenzhen around 7am the next morning.
That is my mode of travel between Beijing, Shanghai and Shenzhen/Hong Kong.
It all depends on the rail network. It works in China due to the high-speed rail network and the willpower of the government to implement it.