Following the tradition of airplane numbering. In the early days, airplanes were mostly single aisle, with 6 seats in each row, and then it slowly formed the international practice that AF is the window position and CD is the aisle position. High-speed rail continues this numbering tradition, but high-speed rail - rows of up to 5 seats, remove the specific letters that do not affect the window or by the aisle, so there is no E seat.

First-class seat number: A, F by the window, C, D by the aisle second-class seat number: A, F by the window, C, D by the aisle, B in the middle of the triple seat. There are also some moving car seat distribution map is different from others, such as the CRH1 type of moving car, will be represented by A, B, C, D, F.

Expanded information:

Note:

High-speed rail for the weight of luggage has certain requirements, adult luggage shall not exceed 20 kilograms, children carry baggage for 10 kilograms, the volume is the length, width and height combined does not exceed 130 centimeters, more than the provisions of the need for check-in.

Short distance passengers are best not to sleep on the high-speed rail, if the trip by high-speed rail within one hour is best not to sleep, it is easy to sleep through the station.

Baidu Encyclopedia-High-speed Railway