时间：2022-08-03 02:04:51
This idiomcomes from Classics of aHundred Metaphors・Metaphor of the Third Floor.
Long long ago, there was a rich man who was also very foolish. Once he went to the neighbouring village to visit another wealthy man. The host entertained him in the sitting room on the third floor of a new building. He admired the bright and spacious room very much and thought: "My wealth is not less than him, but why haven't I such a nice building?"
As soon as he returned home, he sent for some carpenters and asked: "Do you know who built the magnificient building in the neighbouring village?" "Yes, it was our work, "they replied. The foolish rich man was very happy and asked them to build a new threestory building for him, exactly the same as the other rich man's one.
As the workers began to build the first floor, the foo1ishman arrived. He has puzzled at what the worker did and asked: "What are you doing?" "According to your plan, we are working on a three-story building," the workers answered. "No, I don't want the first and the second stories, I just want the third story building," the foolishman said firmly. All the workers laughed and said: "How can we build the third story without the first and second foundations. It's impossible, you'd better do it yourself."
Now we use it as a metaphor to indicate the farfetched theory, plan, etc.
此语出自《百喻经・三重楼喻》。在很早以前，有一位很富有的财主，生性愚蠢。有一天，他到邻村的一位财主家作客，这位财主在一幢新建的三层楼上的大厅内接待了他。他看到屋子宽敞明亮，阳光充足，心里非常羡慕：“我的钱也不比他少，他能有这样一幢楼，我为什么没有?”
他回到家里马上派人去把工匠们找来，问他们：“邻村新楼，你们知道是谁造的?”工匠们回答就是他们几个造的。
傻财主听了很高兴，对他们说：“你们照样给我盖一个，记住要三层的，要和那幢一样。”
开工后，工匠们开始打地基，修建第一层时，财主来到工地，心里十分纳闷，问他们：“你们在干什么?”工匠们回答：“照你的要求盖一幢三层楼房啊!”傻财主却坚决地说：“不对，我要你们造第三层的房子，我只要第三层的，下面两层我不要。”工匠们哈哈大笑说：“只要上面那层，我们不会造，还是你自己去造吧!”
后用此典比喻虚构的事物和脱离实际的理论、计划等。