to obstinately persist in going about things the wrong way (idiom)
Definitions (粵典–words.hk)
語句
堅持錯誤嘅觀念,唔悔改 to be impenitent towards one's mistake(s)
唔好再執迷不悟啦,改過自新啦!
唔好再执迷不悟啦,改过自新啦!
m4 hou2 zoi3 zap1 mai4 bat1 ng6 laa3, goi2 gwo3 zi6 san1 laa1! Don't be impenitent towards your mistake(s) and correct it please!
Definitions (Wiktionary)
phrase, idiomatic
to wilfully persist in going about things the wrong way; to refuse to realise one's error