순망치한in English:if I lose my lips, my teeth will hurt

Examples
with 순망치한.

• 친구가 힘들면 나도 힘들어지는 순망치한의 관계야.Chinguga himdeureun na do himdeureojineun sunmangchihanui gwangye ya.If my friend is struggling, I also feel the pain; that's the closeness of our relationship.