invisible ; fictitious
In Chinese, Pinyin is w ú x í NGW ú y ǐ ng, which means to disappear completely without any trace; it is used to describe fictional things. From the poem of breaking the wind.
The origin of Idioms
The third fold of Ming Dynasty's Wu Mingshi's poem of breaking the wind: "no shape, no shadow, through people's heart, four seasons can blow all things open."
Idiom usage
Used as an attributive or adverbial; used in writing.
Examples
Guo Moruo's difficult journey: "his mind to go is completely destroyed."
invisible ; fictitious
The dike of a thousand miles is destroyed by the ant nest - qiān lǐ zhī dī,huǐ yú yǐ xué
Lucid waters and lush mountains - lǜ shuǐ qīng shān
when one drinks water , one must not forget where it comes from - yǐn shuǐ sī yuán