To prevent train noise from affecting residents, the entire station environment is constructed with materials designed to reduce noise and vibration, while the train can only operate during daylight hours and at a very low maximum speed. This minimizes the disturbance and vibrations of the train, which become similar to those of a traditional subway system. One of the main advantages of this facility is that it allows residents to access the train directly without having to leave the building, which is ideal especially on days of heavy rain that are common in Chongqing. or the railway line, the main advantage is the possibility of continuing its route without the need to opt for alternative solutions that would considerably divert its route and reduce its efficiency.

From: https://meettheearth.org/2021/11/28/the-train-through-a-building-in-china-liziba-station/