ㄐㄧˊㄈㄥfēngzhīㄐㄧㄥˋjìngㄘㄠˇcǎo

  1. 經過猛烈大風吹襲知道堅韌挺立不倒比喻艱難困苦環境才能考驗出人堅強意志節操後漢書·○·王霸》:潁川努力疾風知勁草。」新唐書··》:疾風知勁草版蕩。』」

the storm put strong grass to the test (idiom)​; fig. troubled times test a faithful minister, to show one's true colors after a stern test, also written 疾風勁草