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Jyutping bui1 zau2 sik1 bing1 kyun4
Pinyin bēi jiǔ shì bīng quán

Definitions (CC-CEDICT)
  1. to dismiss military hierarchy using wine cups
  2. cf Song founding Emperor Song Taizu 宋太祖 holds a banquet in 961 and persuades his senior army commanders to go home to their provinces
Definitions (Wiktionary)
  1. phrase, idiomatic
    relinquish one's military command over a glass of wine