He could already just barely manage it without unfurling the Sun Sacred Body's Ten Great Phenomena or deliberately fusing the two Divine Forms.
By bringing the Divine Forms he had cultivated and his various Secret Techniques to their ultimate expression, he could directly trigger the eternal Divine Forbidden Domain.
In that instant, he sublimated, stepping into that profound and mysterious domain of the gods.
This in itself was a qualitative leap.
Moreover, through repeated attempts, his strength grew by the day, and the time he could remain in that domain was quietly increasing.
Although it was still relatively brief, the progress was already tremendous.
Previously, triggering the Divine Forbidden Domain had only allowed him to unleash a world-shaking strike in a fleeting instant.
Now, once he triggered it, the brief time he could stand within that domain allowed him to unleash at least two or three strikes.
This was undoubtedly astonishing, especially a peerless strike unleashed with all his might and regardless of the cost after triggering Nine Secrets: Jie, fully circulating his various Ancient Scriptures and Secret Techniques, and amplifying his combat strength to its utmost.
Even Taiyi himself had been stunned at the time.
He could scarcely believe it.
Boom!
At that moment-
The Underground Palace shook violently.
Even as far away as Licheng, the tremors were clearly felt. Many people turned pale, afraid that they would be caught up in it.
This subterranean world was extraordinarily vast. Deep-reaching underground palaces connected into one expanse, leading no one knew where. Rather than a Great Tomb, it resembled a sprawling complex of ancient underground castles.
Large numbers of corpses lay strewn across the ground-not only human and Demon Race cultivators, but also many Yin Soldiers that had grown patches of flesh, making one's scalp prickle.
"Ah... ah..."
Cries of