看菜吃饭

lit. to eat depending on the dish, cut cloth according to the body (idiom); fig. to act according to actual circumstances

lit. to cut cloth according to the body (idiom); fig. to act according to actual circumstances

lit. tailor the clothes to fit the body (idiom); fig. act according to real circumstances

to act as circumstances dictate (idiom)

lit. see the wind and set your sails (idiom); fig. to act pragmatically; to be flexible and take advantage of the situation

see the opportunity and act (idiom); to act according to circumstances; to play it by ear