It is so hot that people can't sleep. What if there is only an electric fan?

Take a hot bath, wipe a mat, and shake a small fan when sleeping. If the bed is high enough, put a large basin of cold water under it to absorb heat.

If the floor, interior and exterior walls, ceiling and partition of the house are all plastic films, it is necessary to remove them first and open the doors and windows, so that the floor will be wet and heat will be dissipated. Wipe the mat with a wringing wet towel again. The latter should be used as a last resort.