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Jyutping sang1 saat3 daai6 kyun4
Pinyin shēng shā dà quán

Definitions (CC-CEDICT)
  1. life-and-death power
  2. ultimate power
Definitions (Wiktionary)
  1. phrase, idiomatic
    life-and-death power; ultimate power
Examples (粵典–words.hk)
  1. Cantonese
    生杀大权
    生殺大權
    saang1 saat3 daai6 kyun4
    • the power to decide who lives and dies