Is it clean to take a sleeper when traveling from Huizhou to Chongqing?

Traveling from Huizhou to Chongqing, the sleeping berth is not clean. Although the price of train hard sleeper is cheap, the sanitary conditions will be reduced. The flight attendants on the train are sometimes too lazy to change their bedding. There are so many sleepers on the train, the workload is very heavy and people are lazy. This is human nature. Unless the conductor of this train is very strict, many times the flight attendants will be too lazy to change the sheets and step on them directly when changing them. In addition, the bedding of the train sleeper is sent to the washing factory for cleaning, so it is difficult to clean it all. Therefore, it is not clean to travel from Huizhou to Chongqing by sleeping berth.