This Korean term is used throughout Re Jane is most commonly defined as the ability of a person to gauge other people's moods. It is considered important in interpersonal relationships. More specifically. it is the art of sensing what people are thinking and feeling. The emphasis of n unchi is usually placed on the collective rather than specific inbdividuals. In other words, nunchi is an asset at business meetings. IKn this article, the author states that in Korean child rearing, it's on a par with "Look both ways before crossing the street". Literally translated from Korean it means "eye-measure". In Korea, nunchi is woven into everyday life. Take, for example, business cards. Even in the era of LinkedIn, Koreans still exchange business cards, and the exchange approaches ceremonial levels: You must take and receive a business card with both hands, as if it were fragile, and study it respectfully for a few seconds. You never stuff it in your wallet. This ritual gives all parties a chance to take a beat and use their nunchi — to eye-measure each other to get a sense of the implied hierarchy and whether one is reckoning with a future ally or a foe. It also connects the giver with the receiver, laying a foundation for trust.

https://www.nytimes.com/2019/11/02/opinion/sunday/nunchi.html