C429 Heaven Shaking Slaying Sword Technique

"You really are not simple."

Looking at Mu Yi's aura which had risen to the Void Saint, Blue Thunder Whale King's eyes flashed with a hint of astonishment. He was also surprised by Mu Yi's methods, and with Blue Thunder Whale King's eyes, he could tell that this was a method to temporarily increase his strength. Also, when Mu Yi released this power