钻故纸堆

Traditional form:

鑽故紙堆

Pinyin (reading):

zuāngùzhǐduī

Definitions:

• to dig into piles of outdated writings (idiom); to study old books and papers

Characters:

• 钻 - diamond; to bore, to drill, to pierce
• 故 - reason, cause; happening, instance
• 纸 - paper
• 堆 - crowd, heap, pile, mass; to pile up; measure word for things in piles or stacks

Traditional characters:

• 鑽 - diamond; to bore, to drill, to pierce
• 故 - reason, cause; happening, instance
• 紙 - paper
• 堆 - crowd, heap, pile, mass; to pile up; measure word for things in piles or stacks