有則改之，無則加勉 [－则－－－无则－－]

Jyutping jau5 zak1 goi2 zi1 ， mou4 zak1 gaa1 min5
Pinyin yǒu zé gǎi zhī ， wú zé jiā miǎn

Definitions (Wiktionary)
  1. phrase, idiomatic
    correct mistakes if you have made any and guard against them if you have not

有則改之，無則加勉 [－则－－－无则－－]

Jyutping jau5 zak1 goi2 zi1 mou4 zak1 gaa1 min5
Pinyin yǒu zé gǎi zhī ， wú zé jiā miǎn

Definitions (粵典–words.hk)
  1. 語句
    有​缺點​就​去​改​，​冇​嘅​就​勉​勵​自己​唔​好​犯
    correct any mistakes you made, but maintain your good record if you did not make them

有則改之，無則加勉 [－则－－－无则－－]

Jyutping jau5 zak1 goi2 zi1 , mou4 zak1 gaa1 min5
Pinyin yǒu zé gǎi zhī , wú zé jiā miǎn

Definitions (CC-CEDICT)
  1. correct any mistakes you made, but maintain your good record if you did not make them (idiom)