Shā fù zhī chóu, bù gòng dài tiān.*

殺父之仇, 不共戴天。

Lit [With] the enemy who has slain one's father [one can]not [live] together under the same sky.

Fig One must avenge one's father's murder.

Note [Cf. Confucius' Lǐjì: Qū Lǐ; note: bùgòngdàitiān, is a set phrase meaning “absolutely irreconcilable.”]

Topics Book of Rites bùgòngdàitiān CHILDREN Confucius ENEMIES FATHERS Lǐjì MURDER Qū Lǐ VENGENCE