Are Yin people young?

Yin people don't mean young people. When the word Yin people first appeared, it refers to people who showed people feng shui or did white things in ancient times. Nowadays, the Yin people mentioned in everyone's mouth generally refer to ghosts or sinister people.

In social communication, there are frank and open people, people with ulterior motives and generous and petty people. Here, a person who wants to say that he is insidious and cunning can be called Yin for short.