To rack one's brains

To rack one's brains

As a Chinese idiom, Pinyin is d ā NJ ī NGJ í L ǜ, which means exerting wisdom and energy. It's from reading in Hanlin Academy.

The origin of Idioms

Zhang Juzheng of the Ming Dynasty wrote in the book of reading in the Hanlin Academy: "it's not wise for the sage to do it with all his might to train the emperor."

Analysis of Idioms

A close synonym: to think deeply

Idiom usage

Used as a predicate or object; used for thinking