(Beijing) – Four of the nation's 14 high-speed rail lines have financially broken even since bullet trains started full-speed, intercity service in China two years ago, giving impetus to a Ministry of Railways expansion.

Passenger ticket revenues have so far matched expenses – including debt payments – for the busy Beijing-Tianjin, Shanghai-Nanjing, Beijing-Shanghai and Shanghai-Hangzhou lines, a source at the National Development and Reform Commission (NDRC) told Caixin.