黄粱梦
huáng liáng mèng
[Golden Millet Dream (from the story of a poor scholar who dreamt that he had become a high official but awoke to find only the pot of millet still cooking on the fire);pipe dream] 比喻虚幻的梦想。典出唐.沈既济《枕中记》，说卢生在梦中享尽了荣华富贵，醒来时，蒸的黄粱米饭尚未熟，只落得一场空