◎南柯一夢nánkē-yīmèng
[Nanke dream(from the story of a man who dreamed that he became governor of Nanke in the Kingdom of the Ants);illusory joy;fond dream] 唐代淳于棼做夢到大槐安國享受富貴榮華，醒來后發現乃一場大夢，大槐安國原來是大槐樹下蟻穴。后用此典故比喻夢幻境界的事
廣陵人淳于棼在夢中被大槐國國王招為駙馬，當了南柯郡太守，歷盡人生窮通榮辱。醒來發現躺在大槐樹下，而一切的夢境均發生于樹旁之蟻穴。典出唐．李公佐《南柯太守傳》。比喻人生如夢，富貴得失無常。