"Mystic Cannon!" I roared, my eyes blazing with a might as scorching as the sun. At that moment, the divine weapon Tai'a Sword also surged an additional foot in length, unleashing a fierce and unyielding force. Under the Cannon Formula, I flew forward with sword in hand and plunged into the Killing Dao!
"Heaven-Covering Wheel!" Emperor Lord Si also bellowed as he burst out from the surging mortal world. That terrifying power was absolutely no weaker than the Mystic Cannon!
The instant the two forces met, a thunderous boom exploded. The Killing Dao burst apart as the two forces clashed head-on. The fierce shockwave sent my blood and qi boiling, but under sevenfold Dao lineage, Emperor Lord Si suffered even greater damage. Blood streamed from his seven orifices, yet an eerie smile curled at the corners of his mouth. "Do you know what the Heaven-Covering Wheel is? Do you know why the Heaven-Covering Wheel can defeat the strongest ultimate art in the Book of Supreme Unity—the Supreme Unity Cannon?"
"What Supreme Unity Cannon?!" I pushed the Mystic Cannon's power to its utmost limit. With a thunderous crack, the energy barrier of the Heaven-Covering Wheel shattered beneath the edge of Tai'a Sword!
"My younger sister used the same technique as you. The Mystic Cannon is merely the Supreme Unity Cannon from the Book of Supreme Unity under a different name! Heh heh, my younger sister was truly extraordinary. Even though the Dao Master destroyed the book, she managed to find it, learn its contents, and bring them back. She even wanted to use the Supreme Unity Cannon from the Book of Supreme Unity to challenge me..."
My eyes narrowed. If what he said was true, then when Old Ancestor Chen Xuanji created the Mystic Cannon, it had been derived from the