知錯能改

知错能改
zhīcuònénggǎi
to recognize one's mistakes and be able to reform oneself (idiom)

CEDICT

to know one has made a mistake and is able to rectify it; to take responsibility for one's behaviour

Wiktionary

知道過錯改正

重編國語辭典

知道錯誤改正

維基詞典

Entry Composition