/kloc-children under 0/.2 meters can enter the station with adults free of charge.
According to Article 19 of the Regulations on Railway Passenger Transport, carriers generally don't accept children to ride alone (except that students who pass by the school by train and the carrier agree to be supervised during the journey).
Children traveling with adults whose height is 1.2 ~ 1.5 meters should buy children tickets; You should buy a full-price ticket if it exceeds 1.5 meters. Every adult passenger can bring a child whose height is less than1.2m free of charge. If there is more than one child, you should buy a child ticket for the excess.
The seats of children's tickets should be the same as those of adult tickets, and their arrival should not be farther than that of adult tickets. Free rides and children with children's tickets should make up the fare difference when they use the sleeper alone.
Ticket checking regulations:
"Regulations on Railway Passenger Transport" Article 27 The station shall check the tickets of passengers and personnel entering and leaving the station, and the train shall perform the duty of checking the tickets for the passengers. Passengers who must purchase discount tickets and various boarding passes with certificates should check the corresponding certificates, and the tickets should be marked with inspection marks. The station shall stop checking tickets in advance before the departure, but the advance time of stopping checking tickets shall be announced in the business premises of the station.
Twenty-eighth railway inspectors can check the ticket in the car with the inspection certificate and inspection armband.
Refer to: 12306- Railway Passenger Transport Regulations