四库

Traditional form:

四庫

Pinyin (reading):

sìkù

Definitions:

• the four book depositories, namely: classics 經／经, history 史, philosophy 子 (zǐ), belles-lettres 集

Characters:

• 四 - four
• 库 - armory, treasury, warehouse

Traditional characters:

• 四 - four
• 庫 - armory, treasury, warehouse