What's the rule of taking children in a train sleeper?

Legal analysis: According to the relevant regulations of the railway department, adult passengers can bring a child less than 1.2 meters in height free of charge. If there is more than one child, the excess number should buy a child ticket. If children who travel for free or buy children's tickets need to use the sleeper alone, they need to pay the fare difference.

Legal basis: Regulations on Railway Passenger Transport

Article 19 Carriers generally don't accept children traveling alone (except that students who pass through school by train and the carrier agree to take care of them during the journey). Children who travel with adults and are 1.2 ~ 1.5 meters tall should buy children's tickets; You should buy a full-price ticket when it exceeds 1.5 meters. Every adult passenger can bring a child under 1.2 meters in height free of charge. If there is more than one, the excess number should buy a child ticket. The seats of children's tickets should be the same as those of adult tickets, and their arrival at the station 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.

article 31 the train can collect tickets for the passengers who take the sleeper and keep them in centralized custody. When collecting tickets, a sleeper card should be renewed; Before getting off the bus, passengers should exchange their tickets with their sleeper cards. Adults with children or children and children can use a sleeper.