A mocking smile touched Zhou Yan's lips.
These demon experts cultivated secret demonic arts and practiced evil powers. Their souls were weak and utterly defenseless.
He raised his arm and unleashed a palm strike. Golden light erupted from his palm, revealing boundless mysteries, as if a force of ten thousand jun was pouring out and ruthlessly suppressing them.
The attacks of the three demon kings all collapsed. They were sent flying back, spitting blood.
Their physical bodies began to crack, revealing countless gruesome wounds.
Even a part of their heads exploded, leaving only severed necks that still bled scarlet.
"This..."
"No, we don't want to die!" The three demon kings were close to tears.
Just moments ago, they had held the absolute advantage!
How could they have suffered such a crushing defeat in the blink of an eye?
"Want to live? Simple! Just hand over your demon cores, and I promise to spare your lives!"
Zhou Yan stood with his hands behind his back, looking down at the three demon kings with a detached tone.
Demon cores were the cornerstone of demon cultivation, containing vast amounts of demonic energy. They were incredibly precious, the very essence of the demons.
Any single demon core possessed astonishing medicinal effects and could be controlled.
"Impossible!"
"You wish!"
The eyes of the three demon kings were chilling.
They were the rulers of the demon race, holding high status. If their demon cores were taken, they would surely die.
"Heh, if that's the case, then you can die!"
Zhou Yan shook his head.
"Swish!"
As his voice fell, a sharp glint flashed in his eyes.
Immediately after, a palm-sized lotus flower suddenly appeared before him.
The lotus was pure white and crystalline, as if cast from white jade. Brilliant golden light swirled around it, exuding a sacred aura.
"That's the Saint Emperor's Mark sealed within the Saint Emperor's Seal!"
"This human youth actually controls the Saint Emperor's Seal?"
"This is the origin of the Saint Emperor's Seal. If one can merge and refine it, even Saint Emperor-level experts in the Divine Realm would not dare to provoke them easily."
"Quick, flee!"
The three demon kings were terrified and, without hesitation, abandoned their physical bodies, attempting to escape.
"Too late!"
Zhou Yan sneered.
"Hum—"
The next moment, the white jade lotus trembled violently.
A hazy halo spread out, completely enveloping an area of a thousand meters.
The bodies of the three demon kings froze, as if they had been immobilized.
"Damn it, this is the Saint Emperor's Domain!"
"Damn it, how could this be? What kind of fortuitous encounter did this human have?"
The three demon kings' eyes bulged with fury.
The Saint Emperor's Domain was a powerful artifact capable of suppressing all within its domain, causing everyone to fall into a state of slumber.
Any warrior who fell into slumber had blurred consciousness, leaving only their purest instincts, like puppets obeying commands.
Furthermore, once one fell into slumber, their soul would also be damaged, and their strength would be greatly weakened. They would be unable to wake up for a considerable time.
"These three fellows are too weak, offering no challenge at all."
Zhou Yan pouted, then flicked his finger, sending streaks of firelight to incinerate the remains of the three demon kings.
After finishing this, Zhou Yan nodded with satisfaction, his gaze shifting to a pile of ruins in the distance, his eyes gleaming with an unusual light.
Zhou Yan had already plundered most of the treasures within the Luo Li Immortal Palace.
Only a mysterious altar remained intact.
"Hmm, what is this?"
Suddenly, Zhou Yan's pupils contracted. He found a small, dark tower amidst the ruins.
The small tower was dark red all over, its surface covered with dense patterns, like countless blood vessels.
Faint, strange sounds emanated from within the tower, like the roars of some wild beast.
Zhou Yan observed it carefully and found no danger.
After a slight hesitation, he picked up the small tower.
The tower was roughly ten feet long and wide. Its material was sturdy, and the inscribed symbols were complex, exuding a sense of ancient desolation.
Ye Xun was also studying it nearby, his face filled with shock.
"Could this be the legendary Nine Nether Blood Tower?"
He murmured to himself, clearly excited.
This was a Saint-grade spiritual treasure with terrifying might, a notorious ominous weapon in the history of the Nine Nether Demon Kingdom.
Legend had it that the Nine Nether Blood Tower had once drunk the blood of a Saint Emperor.
Upon its appearance, it could summon the lingering will of a Nine Nether Demon Emperor to descend, its power unfathomable.
"Can this thing be used?" Zhou Yan frowned.
Although in the Nine Nether Demon Kingdom, the power of a Saint Emperor was merely equivalent to the demigod level, it was still a Saint Emperor. Even a fractured phantom would possess extraordinary power.
"Let's try and see!"
Ye Xun nodded, took out a drop of his heart's blood, and infused it into the Nine Nether Blood Tower.
Instantly, the Nine Nether Blood Tower vibrated violently, emitting layers of blood-red light. A vast, majestic aura then swept out in all directions.
Suddenly, a crisp sound echoed. Immediately, before everyone's eyes, the Nine Nether Blood Tower slowly opened its top, revealing a profoundly deep, gaping maw.
"This is... a path to the Demon Dragon Immortal Palace!" Zhou Yan's body trembled violently.
This tower was a teleportation artifact, capable of instantly transporting people!
"Quick, let's leave here quickly."
"I sense that an extremely terrifying existence has awakened here."
Almost simultaneously, low roars began to sound.
These roars carried intense resentment, mixed with anger, slaughter, ferocity, and bloodlust...
This was a horde of demonic creatures!
Moreover, the number of these demonic creatures was unimaginably large, densely packed across the valley, forming a tide of demons.
Zhou Yan released a wave of fire, destroying the valley.
"Go!"
Without a word, he grabbed Ye Xun's shoulder, along with Diao Chan and Zhen Mi. He activated spatial formations, took a step, and plunged into the spatial vortex.
"Hiss..."
A vast destructive energy filled the area where they had just been. The place was completely annihilated, and the released energy was still quite potent.
Zhou Yan immediately felt a strange force envelop him, and then he was propelled into the air, vanishing from his original spot.
When he opened his eyes again, they were in another unfamiliar space.
This was a colossal palace!
Within the palace, skeletons floated one after another.
Powerful auras emanated from the skeletons, spanning across the eight directions.
These skeletons seemed to have possessed terrifying cultivation in life; even a wisp of their will after death was formidable.
"Husband, those skeletons are so frightening!"
"Over there, there's a coffin too!"
Diao Chan and Zhen Mi, their pretty faces pale, hid behind Zhou Yan, trembling.
They had just witnessed those skeletons standing up, with streams of terrifying demonic energy emanating from them.
The coffin, in particular, was even more ominous, carved with ancient totems that exuded an aura of evil, as if from an ancient era.