如臂使指 rú bì shǐ zhǐ

DEFINITIONS

  1. as the arm moves the finger (idiom)
  2. freely and effortlessly
  3. to have perfect command of

CHARACTERS

如 rú
HSK 3
if, supposing; as if; like, as
臂 bì
HSK 6
arm
使 shǐ
HSK 4
cause, send on a mission, order; envoy, messenger, ambassador
指 zhǐ
HSK 4
finger, toe; point, indicate