idiom · describing an article, speech, or work that is brief yet pithy and forceful

他的演讲短小精悍，不到十分钟就讲清了复杂的道理。

idiom · describing a person who is small in stature but energetic, capable, and shrewd

他虽然个头不高，却短小精悍，走起路来虎虎生风。