Division of railway passenger transport sections:

Passenger transport sections: If calculated by sections, there are too many passenger transport sections in every prefecture-level city; For example, Shanghai Passenger Transport Section of Shanghai Railway Bureau is called Shanghai Section of Shanghai Railway Bureau, and similarly, there is Beijing Section of Beijing Railway Bureau, etc.

In addition, the railway grade and project composition are divided.

Diversion areas: such as Beijing, Zhengzhou, Shanghai and Guangzhou.

These are the "principles".