rack one's brains
Search your stomach, Chinese idiom, Pinyin is s ō uch á nggu ā D ù, which means racking your brain and thinking hard. It's from Bufu Lao.
The origin of Idioms
The first discount of Ming Feng Weimin's Bu Fu Lao: when a family searches for food, they don't know whether they are hungry or thirsty.
Analysis of Idioms
Synonyms: racking one's brains, meditating, meditating, meditating Antonyms: inattentive, absent-minded
Idiom usage
As a predicate or adverbial; used of people. Like this composition, what can be written? ——Pu Songling's truant biography in Qing Dynasty
rack one's brains
there is not the slightest error - háo lí bù shuǎng
I don't know how to turn it upside down - bù zhī diān dǎo
Burn the gold and destroy the bone - shuò jīn huǐ gǔ