相機而動 xiàng jī ér dòng

DEFINITIONS

  1. to wait for the opportune moment before taking action (idiom)

CHARACTERS

相 xiàng
HSK 3
mutual, reciprocal, each other
機 jī machine; moment, chance
而 ér
HSK 3
and; and then; and yet; but
動 dòng move, happen; movement, action