ㄑㄧㄡㄈㄥqiūfēngㄙㄠˇsǎoㄌㄨㄛˋㄧㄝˋluòyè

秋风扫落叶
  1. 比喻強大力量迅速掃除腐朽衰敗勢力 方陣秋風掃落葉擊潰敵軍」。

lit. as the autumn gale sweeps away the fallen leaves (idiom)​; to drive out the old and make a clean sweep