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Jyutping daan1 dou1 fu6 wui2
Pinyin dān dāo fù huì

Definitions (粵典–words.hk)
  1. 動詞
    隻​身一人​或​只有​少數​人​陪同​前往​有危​險​嘅​會​面​,​比喻​某人​有智謀
    used to praise someone who is brave and wise. literally, to go to/attend a meeting on his own or accompanied with very few people.
    • 總統單刀赴會解決咗雙方嘅利益衝突。
      总统单刀赴会解决咗双方嘅利益冲突。
      zung2 tung2 daan1 dou1 fu6 wui2 gaai2 kyut3 zo2 soeng1 fong1 ge3 lei6 jik1 cung1 dat6.
      The president attended the meeting on his own and solved the interest conflicts between two parties.

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Jyutping daan1 dou1 fu6 wui6
Pinyin dān dāo fù huì

Definitions (CC-CEDICT)
  1. lit. to go among enemies with only one's sword (idiom)
  2. fig. to go alone into enemy lines
Examples (粵典–words.hk)
  1. Cantonese
    总统单刀赴会解决咗双方嘅利益冲突。
    總統單刀赴會解決咗雙方嘅利益衝突。
    zung2 tung2 daan1 dou1 fu6 wui2 gaai2 kyut3 zo2 soeng1 fong1 ge3 lei6 jik1 cung1 dat6.
    • The president attended the meeting on his own and solved the interest conflicts between two parties.
  2. Cantonese
    单刀赴会
    單刀赴會
    daa2 dou1 fu6 wui6
    • to join a competition (usually a fight) alone