楚漢戰爭時，項羽和劉邦在滎陽、成皋間相持。劉邦命韓信出兵齊國、趙國，想從項羽背後夾攻，項羽命龍且率大軍救援齊國，被韓信擊殺。項羽於是派武涉去說服韓信，武涉建議韓信反漢，與楚、漢三分天下鼎足而王。韓信自以為深受漢王劉邦寵信，不聽從他的計策。
參考資料
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