Deal with a man as he deals with you. Where does it come from?

Answer: Deal with a man as he deals with you is a Chinese word, that is, to cultivate others by using their own principles and methods. From Chapter 13 of Song Zhu Xi's Notes on the Doctrine of the Mean: "Therefore, a gentleman should treat others as he deals with you."

Extension:

Related works

1. I don't know how many loyalties have been harmed by this group of traitors, that is, it is extremely gratifying to deal with a man as he deals with you. (Qing Chen Chen's Biography of the Water Margin, Chapter 22)

2. In Jin Yong's "Eight Dragons", it is similar to the word "doing something for others". This kind of kung fu is Mu Rongfu's famous stunt, copying others' methods to deal with people who harm others, and it contains many compliments.

Baidu encyclopedia-deal with a man as he deals with you.