- 其一生 qíyīshēng whole lifethe duration of one's entire life; throughout one's life.
- 只知其一，不知其二 zhǐzhīqíyī, bùzhīqí'èr half-informedto know only one side of a matter; to have incomplete information (idiom)
- 终其一生 zhōngqíyīshēng all one's lifefor the entirety of one's life; from beginning to end of one's life
