Xiao Yang activated his Double Pupils and instantly saw through the true nature of the ferocious beast.
In life, this ferocious beast had likely been a terrifying existence at the Immortal Emperor level!
It had been a mountain-guarding divine beast raised by some supreme Great Power!
It had died countless ages ago.
Yet its corpse had been corroded and polluted by the overwhelming resentment of the billions of living beings upon this altar, eventually mutating into an undead ferocious beast even more terrifying and difficult to deal with than it had been while alive!
Although its strength had fallen to the peak Quasi Emperor level due to the dissipation of its Divine Soul, it had gained a true immortal body!
As long as the resentment on this altar remained unending, it would never truly die!
"Troublesome..."
Xiao Yang's brow furrowed tightly.
This undead ferocious beast had become the greatest obstacle to his obtaining the Nine Revolutions Soul Returning Flower!
In terms of raw strength alone, he was absolutely confident that he could crush this ferocious beast.
But the problem was, this thing couldn't be killed!
Even if he used the Immortal Slaying Sword to chop it into eight pieces and grind its bones to dust, the next moment, it could draw resentment anew from the billions of skulls on the altar and revive at full strength!
Unless...
Unless he could find a way to purify, in one go, all the overwhelming resentment accumulated over countless eras upon the entire Ten Thousand Souls Altar!
But was that even possible?
The resentment here was vaster than an ocean!
Even a true Immortal Emperor likely couldn't accomplish it, could they?
Just as Xiao Yang racked his brains for a solution, suddenly!
Violent energy fluctuations and deafening battle cries came from the direction of