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 they can refer to sinister people.

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