心知肚明 xīn zhī dù míng

DEFINITIONS

  1. to be well aware

CHARACTERS

心 xīn
HSK 3
heart; mind, intelligence; soul
知 zhī
HSK 2
know, perceive, comprehend
肚 dù
HSK 4
belly; abdomen; bowels
明 míng
HSK 1
bright, light, brilliant; clear