Duke Zhou didn't wear a coat himself, so he went to have some fun.

Dreaming is a normal and indispensable physiological and psychological phenomenon. A few brain cells are still active after falling asleep, which is the basis of dreaming. Dreaming is a typical unconscious activity. By dreaming, existing knowledge can be recombined, and new knowledge and old knowledge can be reasonably combined and finally stored in the warehouse of memory. So there is nothing to say and nothing to hint at.