兵敗如山倒 [ㄅㄧㄥ ㄅㄞˋ ㄖㄨˊ ㄕㄢ ㄉㄠˇ; bing1 bai4 ru2 shan1 dao3] troops in defeat like a landslide (idiom); a beaten army in total collapse ◄ ►