CRH3X doubie-deck sleeper motor trainunit

By standardizing and modularizing the power units and car interfaces, the train can be flexibly marshaled within a range of 2 to 16 cars, just like "building blocks". Its iconic longitudinal sleeper design subverts the traditional layout, with berths parallel to the direction of the train, creating a private "single compartment" for each passenger, equipped with an independent window, reading light, charging socket, and blackout curtain. This design greatly enhances comfort and dignity within a limited space.