洗心革面 (sai2 sam1 gaak3 min6) — to totally reform one's ways; to turn over a new leaf; to thoroughly reform oneself in Cantonese
saiˊ²洗samˉ¹心gaak˗₃革minˍ₆面Mandarin Pinyin: xi3 xin1 ge2 mian4
Meaning of 洗心革面
nounto totally reform one's ways; to turn over a new leaf; to thoroughly reform oneself