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Jyutping mo1 gwai2 tok3 sai3
Pinyin mó guǐ tuō shì

Definitions (粵典–words.hk)
  1. 語句
    做​咗​一​啲​非常​之驚人​,​無法​想像​嘅​嘢​出​嚟
    to perform an incredible feat, to show extraordinary ability, literally "demon incarnate"

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Jyutping mo1 gwai2 tok3 sai3
Pinyin mó2gui tuō shì

Definitions (CC-CANTO)
  1. describes someone of extraordinary talent [written and colloquial]