The Yin-Yang Immortal-Slaying Spear had been formed by fusing the Profound Yin Immortal-Slaying Spear and the Profound Yang God-Slaying Spear. Both divine spears were Tai Cang Diyang's accompanying supreme treasures and had advanced to lower-grade Connate Treasures many years ago.
Now that Tai Cang Diyang had broken through, the grades of these two treasures had also risen further. Nourished by the immortal treasures of the Taicang Imperial Clan, they had already reached the level of mid-grade Connate Treasures.
The Yin-Yang Immortal-Slaying Halberd formed by the fusion of the two treasures was nearly no weaker than the Profound Abyss Immortal-Suppressing Halberd. As the two went all out and collided, an incomparably fearsome light of slaughter burst forth.
Boom—
After a brief clash, Tai Cang Diyang was sent flying.
The Western Qi Heavenly God remained where he stood and said coldly, "The ancient imperial bloodline truly is extraordinary. But if this is all you have, then you may as well admit defeat."
"Is this the power of the late Celestial Immortal realm?"
"What terrifying strength. If not for the Yin-Yang Undying Armor protecting me, I would likely have been injured already."
Tai Cang Diyang barely steadied himself, his face somewhat pale.
He took a deep breath. Yet rather than growing solemn, boundless fighting intent welled up within him. His gaze sharpened as he said, "Today, I shall witness the power of a perfected Celestial Immortal body."
As his words fell, the Yin-Yang Immortal-Slaying Spear erupted with unprecedented killing intent and shot forth with a sharp edge capable of piercing all things, charging onward without return.
"Bold indeed."
With a furious shout, the Western Qi Heavenly God swept the Profound Abyss Immortal-Suppressing Halberd through all directions with unmatched force, once again sending Tai Cang Diyang flying.
Yet almost at the same instant, another