There is no reason
There is no reason for this. The Chinese idiom, Pinyin, is Q í D à ow ú y ó u, which means you can't find a way or do it. It's from the book of leisure, CI and Qu, structure.
The origin of Idioms
Li Yu of the Qing Dynasty wrote in his spare time, CI, Qu and structure: "because of the ignorance of the husband and wife, few people know the words and letters, there is no reason to persuade them to be good and admonish them not to be evil."
Idiom usage
To act as a predicate or attributive
Analysis of Idioms
A synonym: Qi Daowu
There is no reason
throw away their armor and trail their weapons behind them - qì jiǎ yè bīng
women who died in defence of their honour - sān zhēn jiǔ liè