所向披靡

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

CEDICT

比喻力量所到之处，敌人纷纷溃退。《周书．卷二九．王雅传》：「擐甲步战，所向披靡，太祖壮之。」也作「所向风靡」。

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)