ˋㄔㄣˊchénㄉㄨㄢˋduànㄧㄤyāng

  1. 駿馬飛速奔馳揚起塵土形容非常·柳氏傳》:升堂鞍馬逸塵斷鞅倏忽乃至。」

lit. kicking up the dust and breaking the harness, fig. to ride like the wind (idiom)​