Fu Hui
It's a Chinese idiom. Pinyin is Qi ā NH é f ù Hu ì, which means to say something that has no meaning is meaningful. It comes from Yashu by Wang Tingxiang of Ming Dynasty.
The origin of Idioms
The second chapter of Wang Tingxiang's Ya Shu in Ming Dynasty: "Lv Shi Yue Ling is a Book involving Fu Hui, and Liu Zi's thick theory is detailed."
Idiom usage
It can be used as predicate, attribute and adverbial.
Fu Hui
fish for the moon in the water - shuǐ zhōng lāo yuè
the principle of friendship will not admit of a refusal - yì bù róng cí