Because the standard power of general university dormitory is only about 400w, the hair dryer of 1000w can't move. If you use it forcibly, it will only trip and provoke the dormitory to scold. It is not recommended to use it.

A dormitory building may have two or three hair dryers, but generally speaking, there is a time limit (basically it often breaks down).

Of course, if there is a great god, you can try to connect wires in high-voltage places such as toilets. Of course, it is not recommended to risk being discovered by the building management and risk your life.

You can also buy that kind of transformer online, which will be much more convenient.