The Underground Cave was utterly silent.
The seals here were intact, and very little demonic qi seeped out, so the vital energy was relatively pure as well.
Living creatures also inhabited the Underground Cave. Unlike those in places where the seals had shattered, the creatures here had not become magic beasts, and their cultivation and strength were naturally much weaker.
With his higher cultivation realm, Gu Yuanqing could see far more. This entire Underground Cave was itself an enormous seal. The Demon Refining Array formed from the Floating World was connected to these sealing formations, constantly wearing away the power of the Demon Lord's physical body.
At the same time, it drew all the power of the Great Dao into the sealing formations, keeping the power of the demonic dao outside.
Every formation sealing the Demon Lord's physical body was exceptionally powerful. Otherwise, it would have been difficult to imprison the physical body of a great cultivator who had reached the half-step God Lord Realm, even if it was only a portion of his body.
A half-step God Lord possessed an indestructible true spirit, an indestructible physical body, an indestructible divine soul, and an indestructible Great Dao. The word "Indestructibility" came close to meaning eternal life without death.
Or rather, even eternal life without death could hardly convey their might. Their true strength lay in being able to remain forever at their peak!
Thus, even after being worn down for hundreds of millions of years, these severed portions of his physical body still contained boundless power.
And the seal suppressing the Demon Lord's heart was the strongest of them all!
Gu Yuanqing had taken less than half a month to unravel all the other seals, yet even now, he had not gained control of this one.
Of course, that also