"When did you set up the Sword Array?"
Luo Hou's face changed dramatically, not expecting that the Heavenly Sect Master could still have the strength to lay down the Slaying Immortal Sword Formation while battling him.
This is the foremost killing and slaying formation, its attack power far surpassing the Circulation Stars Formation, the premier defensive array. Though he had never experienced it before, he had heard of the fame of the Slaying Immortal Sword Formation, naturally causing dread in his heart.
"As early as when I learned that you were leading your army towards the Original Star Domain, I had already set up my Slaying Immortal Sword Array, merely hiding it within the Circulation Stars Formation and not unleashing the four Slaying Swords, remaining dormant!"
