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Jyutping pun2 sei2 mou4 daai6 hoi6
Pinyin pàn sǐ wú dà hài

Definitions (粵典–words.hk)
  1. 語句
    無所畏懼​,​豁出去
    to risk without fear

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Jyutping ping3 sei2 mou4 daai6 hoi6
Pinyin pàn sǐ wú dà hài

Definitions (CC-CANTO)
  1. to do everything one can, even if it costs one's life, because one has nothing left to lose/ fear; to be all in