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Jyutping gwo3 ji4 nang4 goi2 sin6 mok6 daai6 jin1
Pinyin guò ér néng gǎi , shàn mò dà yān

Definitions (粵典–words.hk)
  1. 語句
    知道​自己​錯​咗​之​後​改善​,​係​最好​不​過​嘅​事​;​出自​《​左傳​》​,​又​會​講做​「​知錯​能​改​」
    "to acknowledge and rectify one's fault is the greatest virtue", a passage from the Zuo Tradition

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Jyutping gwo3 ji4 nang4 goi2 , sin6 mok6 daai6 jin4
Pinyin guò ér néng gǎi , shàn mò dà yān

Definitions (CC-CEDICT)
  1. If one can change after making a mistake, there is nothing better (idiom)
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    过而能改,善莫大焉。
    過而能改,善莫大焉。
    guò ér néng gǎi , shàn mò dà yān 。
    • It is never too late to mend.