What does it mean to describe the relationship between men and women as "misty rain and cold dreams in Wushan"?

Authoritative answer: Wushan sex shows the love between men and women, but sex is not misty rain! When two of a kind said this, the beauty suddenly left, leaving only a lonely pillow, which was as cold as a stone and difficult to sleep. In my dream, there was an ambiguous love affair, but now it's embarrassing ... that is, to describe a man and a woman who suddenly fell in love and broke up, and one side regretted it and couldn't let go ... Wang Ge, it's up to you. ...