large but impractical
Chinese idiom, Pinyin is d à é RW ú D à ng, which means that although it is big, it has no bottom. The original meaning is boundless. The latter is often used to indicate that it is too big to be practical and suitable. It's from Chuang Tzu's xiaoyaoyou.
The origin of Idioms
Chuang Tzu's xiaoyaoyou: "I asked Uncle Lian:" I heard the words in Jieyu. They were too big to be used. I didn't go back. I was terrified by them. They were as good as Han people. "
Idiom story
During the spring and Autumn period, Jieyu, a Madman of the state of Chu, said to Jianwu (a figure in ancient myths and legends) that there was a gushexian mountain in Beihai, and the gods on the mountain could make the world rich in grain. Jianwu thinks that Jieyu's words are too big and unreasonable, so he tells uncle Lian that Jieyu is bragging. Even uncle pondered for a while, to shoulder I said the words of Jieyu is not necessarily unreasonable.
Idiom usage
As a predicate or attributive. examples reading makes up for the lack of nature, and experience makes up for the lack of reading. Natural abilities are like natural flowers and plants. After reading, you know how to prune and transfer them. However, if you do not follow the example of experience, it will be useless. Bacon's two essays on reading in short. In short, the whole text of the ancient Qin, Han, Three Kingdoms and Six Dynasties is really a big and useless book, which can be displayed but not suitable for practical use. Letters to Zhang tingqian by Lu Xun
large but impractical
be courteous to the wise and condescending to scholars - qiān gōng xià shì
the road to happiness is strewn with setbacks - hǎo shì duō mó
focus on only one aspect and neglect all the others - jǔ yī fèi bǎi