There are trains providing moving sleeper service in the northeast. For example, the D4570 train from Shenyang to Beijing, and the D4585 train from Shenyang to Shanghai are all trains that provide moving and sleeping services. Movable sleeper trains are equipped with sleeper cars and seat cars, and passengers can choose sleeper cars or seat cars to travel. The mobile sleeper train provides comfortable sleeping facilities, so passengers can rest and sleep on the train and enjoy catering services on the way. This type of train is common in Northeast China to meet the long-distance travel needs of passengers.