替天行道 (tai3 tin1 hang4 dou6) — take retribution into one's own hands; right a wrong (in the place of the authorities) in Cantonese
tai˗₃替tinˉ¹天hangˎ₄行douˍ₆道Mandarin Pinyin: ti4 tian1 xing2 dao4
Meaning of 替天行道
nountake retribution into one's own hands; right a wrong (in the place of the authorities)