发挥 fāhuī HSK4 demonstrate Origin Definitions Defs Strokes Stroke Words Sentences Sents 借题发挥 jiètífāhuī expound to use a current topic as a starting point to express or elaborate on one's own ideas即兴发挥 jíxìngfāhuī improvisation 超常发挥 chāochángfāhuī outdo oneself to outdo oneself; to perform exceptionally well