蠹書蟲

Simplified: 蠹书虫

dùshūchóng ㄉㄨˋ ㄕㄨ ㄔㄨㄥˊ

    • scholar buried in books and out of touch with real life

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
book-eating worm; bookworm
Meaning
A scholar who buries himself in books and is out of touch with real life. Mildly mocking. Unlike English 'bookworm', it is critical.

Sources