钻故纸堆 zuān gù zhǐ duī

to pore over old books and papers

Word data

HSK Not in HSK
Frequency Unknown

Definitions

  1. 1. to dig into piles of outdated writings (idiom); to study old books and papers

Characters

Character Meaning
钻 zuān HSK 6
to drill; to get into; to thread one's way through
故 gù HSK 3
therefore; cause; reason
纸 zhǐ HSK 2
paper; classifier for documents, letter etc
堆 duī HSK 5
to pile up; pile; heap