所向披靡

suǒxiàngpīmǐ
(idiom) to sweep everything before one; to be invincible

CEDICT

比喻力量所到之處，敵人紛紛潰退。《周書．卷二九．王雅傳》：「擐甲步戰，所向披靡，太祖壯之。」也作「所向風靡」。

重編國語辭典

Entry Composition

1 所向 suǒxiàng
  1. where something is directed
  2. whereabouts; where somebody has gone or is going
2 披靡 pīmǐ
  1. to be swept by the wind
  2. to be blown about by the wind
  3. to be routed (in battle etc)