"Primordial Spirit Realm strength."
"It looks like the Deputy Hall Master of the Seven Kills Hall has arrived."
Meanwhile, hundreds of miles away, Qin Wuyou sneered and turned to enter the second level of the Underground Cavern.
An opponent in the Primordial Spirit Realm was not someone he could kill yet.
Avoiding that sharp edge for now was undoubtedly his best choice.
After entering the second level of the Underground Cavern, Qin Wuyou casually swept a hand across his face, and his appearance instantly changed.
Not only that, even his height and build underwent tremendous changes.
In the blink of an eye, he transformed from a handsome, dashing young talent into a potbellied middle-aged cultivator.
This was the Bone-Transposition Disguise Art. It could alter not only his face, but even his height, build, bones, and aura.
Even if Qin Wuyou stood right before the assassins of the Seven Kills Hall now, they would never recognize him.
After changing his build and appearance, Qin Wuyou began slaughtering demons.
The countless demons of the Underground Cavern World were his true targets on this trip.
Without lingering on the second level of the Underground Cavern World, Qin Wuyou headed straight to the third.
Within the Underground Cavern World, demons of different ranks lived on different levels.
The first level of the Underground Cavern housed the weakest demons, whose strength was only equivalent to the Body Tempering realm.
Occasionally, a few demons with strength at the Qi Refining Realm might appear.
As for the second level of the Underground Cavern, most demonic beasts were in the Qi Refining Realm, with the occasional Essence Condensation Realm demon appearing.
On the third level of the Underground Cavern, most demons were in the Essence Condensation Realm, with the occasional Foundation Establishment Realm demon.
Qin Wuyou was currently in the Essence Condensation Realm, but his actual strength rivaled the Purple Mansion Realm.
Even entering deeper levels of the Underground Cavern World would pose no problem at all.
Nevertheless, he chose the third level.
The Underground Cavern demons on this level all had cultivation equivalent to the Essence Condensation Realm, making them highly beneficial for his refinement of Vital Energy.
Before long, a group of Underground Demons appeared before him.
These demons possessed strength comparable to the middle and late stages of the Essence Condensation Realm. They had humanlike bodies but bull heads atop their necks. They were Bull-Headed Demons, the most numerous demons on the third level of the Underground Cavern.
"True Dragon Divine Sword Art!"
The spirit sword in Qin Wuyou's hand shot forth like a true dragon, instantly cutting down a vast swath of Bull-Headed Demons.
With his formidable strength, killing these Essence Condensation Realm Bull-Headed Demons was even easier than chopping melons and slicing vegetables.
In just a few breaths, the entire large group of Bull-Headed Demons had become corpses.
"Heaven and Earth Furnace, refine them for me!"
Qin Wuyou activated the Heaven-Seizing Creation Art. The enormous Heaven and Earth Furnace appeared and swallowed all several hundred Bull-Headed Demon corpses.
As the Heaven and Earth Furnace operated, streams of spiritual-energy flame radiated from the mass of chaotic energy in its deepest depths.
"Ah! This is... Samadhi Divine Flame!"
"To think I actually cultivated Samadhi Divine Flame by accident!"
Sensing that wisp of three-colored flame erupting from the Heaven and Earth Furnace, Qin Wuyou was overjoyed.
The Heaven and Earth Furnace had been forged from his essence, energy, and spirit.
The Samadhi Divine Flame, meanwhile, was a natural divine flame that would only be born once the Heaven and Earth Furnace had been cultivated to a certain level.
It possessed the terrifying ability to burn heaven and earth, refine flesh and primordial spirits, and refine all things.
With this Samadhi Divine Flame, not only would the Heaven and Earth Furnace's refining speed increase countless times over, but its power would also undergo a qualitative leap!
Before giving birth to the Samadhi Divine Flame, the Heaven and Earth Furnace could only refine ordinary corpses or treasures.
If it encountered corpses or treasures above Saint Rank, his Heaven and Earth Furnace could do nothing to them.
With the Samadhi Divine Flame, however, never mind Saint Rank treasures—even ancient corpses of Great Emperors, emperor-grade divine weapons, and emperor-grade treasures could be forcibly refined by his Heaven and Earth Furnace!
Of course, given the strength of his newly formed Samadhi Divine Flame, he naturally could not refine an emperor-grade treasure if he encountered one now.
Only once his Samadhi Divine Flame reached the stage of great mastery would he be able to refine emperor-grade treasures.
Still, refining Saint Rank treasures or Saint Rank corpses with this newly born Samadhi Divine Flame would be as easy as reaching out and seizing them.
With the appearance of the Samadhi Divine Flame within the Heaven and Earth Furnace, its refining speed increased countless times over.
Originally, given Qin Wuyou's strength, refining those several hundred Essence Condensation Realm Bull-Headed Demon corpses with the Heaven-Seizing Creation Art would have taken two hours.
Now, with the Samadhi Divine Flame, he completely refined those Bull-Headed Demon corpses in only a tenth of that time.
As the large number of Bull-Headed Demon corpses were refined, vast quantities of pure vital energy were extracted and poured into his empty ultimate realm dantian.
The abundant vital energy originally within his ultimate realm dantian had already been refined into a brand-new Origin Qi True Dragon.
Just as he had anticipated, the Qin Family's Nine-Turn Divine Dragon Art was not limited to the Ninth Heaven.
This newly condensed eighty-second Origin Qi True Dragon was proof!
"I'd like to see just where the limits of this Nine-Turn Divine Dragon Art lie!"
Qin Wuyou's eyes shone. He, too, eagerly anticipated how many Origin Qi True Dragons he could ultimately condense.
As the vital energy of those Bull-Headed Demons was absorbed, clumps of black Demon Blood Essence and white demonic soul power also emerged from the Heaven and Earth Furnace.
Qin Wuyou did not immediately absorb this Demon Blood Essence and soul power. Instead, he sealed them away for safekeeping.
Using this Demon Blood Essence and soul power now would be far too wasteful.
Only after he advanced to the Foundation Establishment Realm could these things fulfill their true purpose!
After he absorbed the vital energy of several hundred Bull-Headed Demons, the vital energy within his ultimate realm dantian increased somewhat.
But he was still a hundred and eight thousand miles from filling it completely.
According to the cultivation method of the Nine-Turn Divine Dragon Art, this Tenth Heaven required him to continue condensing at least nine brand-new Origin Qi True Dragons.
At this rate, he would have to slaughter at least several hundred thousand Bull-Headed Demons to have any hope of obtaining enough vital energy.
"The Bull-Headed Demons' vital-energy cultivation is too low. If I kill Foundation Establishment Realm demons, I should obtain more vital energy."
The higher a demonic beast's realm, the more vital energy could be refined from it.
Qin Wuyou naturally understood this principle.
The crux of the matter, however, was that stronger demons were harder to kill.
Rather than spending half a day killing a single high-level demon, he would be better off slaughtering Essence Condensation Realm demons in great numbers on this third level.
An advantage in numbers was still an advantage.
With scarcely any hesitation, Qin Wuyou charged toward another group of demons farther away.
In this Underground Cavern World, demons were the one thing never in short supply.
Especially on this third level of the Underground Cavern World, Essence Condensation Realm demons were everywhere.
Qin Wuyou was like a god of slaughter who had emerged from hell. Wherever he passed, countless demons were slain with a single sword strike.
Then the Heaven and Earth Furnace appeared and refined the demon corpses.
Like a tireless machine, Qin Wuyou slaughtered and refined demons in a frenzy.
Wherever he passed, demons scattered and fled.
Before you continue