自作聪明 zì zuò cōng míng

DEFINITIONS

  1. to think oneself clever (idiom)

CHARACTERS

自 zì
HSK 3
self, private, personal; from
作 zuò
HSK 1
make; work; compose, write; act, perform
聪 cōng
HSK 3
intelligent, clever, bright
明 míng
HSK 1
bright, light, brilliant; clear