即兴 | jí xìng | improvisation (in the arts) / impromptu / extemporaneous | |
临场 | lín chǎng | to be at the scene (sitting for an exam, performing, competing, giving directions etc) / firsthand (experience) / impromptu (remarks etc) | |
即席 | jí xí | impromptu / improvised / to take one's seat (at a banquet etc) | |
插科打诨 | chā kē dǎ hùn | to include impromptu comic material in opera performance (idiom) / to jest / buffoonery |