Because he possessed the Lord of Ten Thousand Beasts' bloodline, coupled with his cultivation of the Demonic Path Ninefold Body...
The new Lord of Ten Thousand Beasts' combat power had already surpassed Yu Mang and the Mystic Jade Emperor. Among Ninth-Step Great Emperors, he was the strongest.
Not long afterward...
Under the new Lord of Ten Thousand Beasts' leadership, the Vast Cosmos Great World invaded the Primordial Cosmos Great World.
More than two thousand years later, Vast Cosmos pushed back into Primordial Cosmos...
The Primordial Cosmos armies were driven by the Vast Cosmos forces from the Burial Emperor Battlefield back into the Primordial Cosmos Great World. Yu Mang, the Sacred Might True Emperor, and all the Primordial Cosmos Great Emperors who had risen over the past two thousand years were leading their armies in a frantic retreat.
In the end...
They erected a defensive line at the border between the Primordial Cosmos lands and the Burial Emperor Tomb.
It was just like the defensive line the Vast Cosmos Great World had built upon the Origin Spirit Seal Realm more than two thousand years ago.
At this moment...
The Sacred Might True Emperor gathered all the Primordial Cosmos powerhouses for a meeting. "Tell me, what should we do next? Why is that little Shadow Moon Rat so powerful? A Ninth-Step Great Emperor Lord of Ten Thousand Beasts has never appeared in history."
Looking across nearly a hundred Burial Emperor eras, there had never been a Lord of Ten Thousand Beasts who reached the Ninth-Step Great Emperor realm. Yet this Shadow Moon Rat had done it.
Naturally, the Sacred Might True Emperor had no idea about the events of the previous Burial Emperor eras...
All of this had been told by the Radiant Extinction Sacred Emperor.
The Absolute Pill Emperor's aged eyes