be never seen without a book in hand
As a Chinese idiom, Pinyin is sh ǒ UB ù sh ì sh ū, which means you can't let go of a book without leaving it. It describes being diligent and eager to learn. It comes from Li Yixiong, preface to northern history.
The origin of Idioms
According to Li Yixiong, a preface to the northern history, "Yixiong has insight, studies hard, and can't explain."
Idiom usage
Used as a predicate or attributive; used in reading.
Examples
Mr. ting Lin has never been able to put down his books. The third volume of Lang Qian Ji Wen by Chen Kangqi in Qing Dynasty
be never seen without a book in hand
The inside and the outside match - biǎo lǐ xiāng fú