用尽心机 yòng jìn xīn jī

DEFINITIONS

  1. to tax one's ingenuity

CHARACTERS

用 yòng
HSK 3
use, employ, apply, operate; use
尽 jìn
HSK 4
exhaust, use up; deplete
心 xīn
HSK 3
heart; mind, intelligence; soul
机 jī
HSK 1
desk; machine; moment