The two Devil Masters guarding the Profound Yin Demon Crystal Vein in the valley made Gu Fei very afraid. The strength displayed by the two Devil Masters was stronger than him.
If it was just one person, Gu Fei still had the strength to fight. With his combat skills and strong martial body, he might not necessarily lose to the Devil Masters. But the opponent was not one person, but two.
But if the two Devil Masters joined hands, Gu Fei had no chance of winning. Gu Fei did not want to put himself in danger, so he could only hide on the Devil Sand Island and wait for the right opportunity.
After the large scale attack by the demonic creatures, there were many casualties among the Demon Dwellers in the valley. Now there were only seventy or eighty Devil Dwellers left.
In addition to the Devil Dwellers who were mining the Profound Yin Demon Crystals, there were not many Devil Dwellers who could fight in the valley, about less than fifty.
There wasn't a need for too many people to mine the Profound Yin Demonic Crystals, because the Profound Yin Qi in the Demonic Crystal Vein was very powerful, and if one stayed in the vein for too long, their entire body would be frozen by the cold Qi emitted by the Profound Yin Qi, and their lives would be in danger.
Unknowingly, another half a month passed. Sitting in the cave that he opened up, Ye Xiwen adjusted his Qi. But it was difficult for him to enter a deep state of cultivation.
The demonic nature in the world made it difficult for him to calm down. Unless he entered the inner space, he would be affected when he cultivated.
Gu Fei did not know where this demonic nature came from. It seemed to come from between heaven and earth. Gu Fei could not sense where the source of the demonic nature was.
Not only Gu Fei, even the Devil Dwellers in the Northern Devil Region did not know where the source of the demonic nature came from.
"Rumble …" Suddenly, Gu Fei was awakened by the dull sound of thunder coming from outside the cave. Then, he stood up from the ground, pushed away the boulder that blocked the cave entrance, and walked out.
What he saw made Gu Fei extremely shocked. At this moment, dark clouds covered the sky, and black lightning struck down from the clouds, appearing extremely evil and sinister.
The rolling and surging dark clouds pressed down lower and lower, as if they had already touched the ground, giving people a heavy sense of oppression, as if hundreds of thousands of mountains were slowly descending.
Apart from the rumbling thunder, there was no other sound. It was as if there was no sound on Devil Sand Island, and all the monsters on the island seemed to have gone into hiding.
An indescribable palpitation caused one's soul to tremble! A terrible storm was about to come.
Gu Fei stood in front of the cave and looked up at the dark sky. The terrifying phenomenon in front of him suddenly made him feel uneasy. He had a faint premonition that something bad was about to happen.
"Boom!"
Lightning flashed and thunder roared. Bolts of crisscrossed black lightning streaked across the dark sky. The heavy rain poured down in torrents, and a curtain of water appeared between the heavens and the earth. The storm had begun.
"Wu wu …" It was as if evil spirits were crying, and the sound of the wind from the surroundings was somewhat frightening.
The black lightning could also illuminate the heavens and earth. When the lightning passed, the world fell into darkness, and one could only hear the terrible sound coming from all directions, and not see any scenery.
It was as dark as ink, and one could not even see their fingers in front of them. The world seemed to be covered by a dense black cloth.
"Rumble!"
The sound of thunder shook the world, and lightning tore through the void. When Gu Fei was about to use the boulder to block the cave entrance again, accompanied by the deafening sound of thunder, Gu Fei seemed to hear the faint sound of fighting from afar.
That sound … seemed to be coming from the ancient ruins on Devil Sand Island. The ancient ruins in the valley, could it be that there was some secret? Gu Fei could not help but frown.
The strange sound coming from the direction of the ancient ruins aroused Gu Fei's curiosity. Thus, Gu Fei walked into the storm, rushing in the direction of the ancient ruins.
None of the rainwater splashed on Gu Fei's body. There was an invisible force that blocked the rainwater.
Gu Fei silently walked in the darkness, like a ghost in the night. Along the way, he did not encounter a single demonic creature. This strange phenomenon made Gu Fei even more uneasy. It seemed that something was really wrong.
Gu Fei cautiously walked forward, and finally, he came to the outside of the valley where the ancient ruins were. At this time, Gu Fei deeply felt that the entire valley was enveloped by a majestic energy fluctuation.
Under the flickering of lightning, ancient figures began to appear in the valley. They were wearing ancient armor, holding divine weapons, and were fighting fiercely in the ancient ruins in the valley.
They were not real people with flesh and blood. These figures were faint and illusory, but they did not emit any soul fluctuations. These figures did not seem to be existences with primordial spirits or ghost bodies.
In fact, it was a kind of Psyche Energy. It was a Psyche Energy that did not dissipate even after death. It was formed by the Psyche Energy, a special existence that only had a form, but did not have a real body.
The pitch-black sky was incomparably stifling. Gu Fei stood on top of a mountain beside the valley, looking at the unbelievable scene in the valley with indescribable shock.
It was truly unbelievable. The battle cries from the ancient times still lingered in his ears, causing his blood to boil. Even though they had died countless years ago, and not even their corpses and bones remained, the Psyche Energy still did not dissipate even after so many years.
The illusory figures fought fiercely in the grand formation. There was no flesh and blood flying, no blood splattering, only shocking cries and the sound of weapons clashing.
Without a doubt, this ancient ruins had definitely been destroyed in a battle.
In the midst of the storm, Gu Fei suddenly felt a spatial fluctuation coming from the ancient ruins below. Sensing this spatial fluctuation, Gu Fei's expression instantly changed.
The spatial fluctuation came from an ancient altar in the ancient ruins. Gu Fei's expression became even more unsightly. This ancient altar had some connection with the nameless ancient palace in the Death Swamp of the Ruin Sky Realm.
The ancient transportation formation in the nameless ancient palace was connected to the altar. Since Gu Fei and the old turtle could activate the ancient transportation formation and travel across realms, it was hard to say that the "kings" in the Death Swamp who controlled the nameless ancient palace would not come to this world through the ancient altar.
"Could there really be kings coming out of the Ruin Sky Realm?!" Gu Fei was inwardly shocked. His attention immediately shifted from the illusory fighters to the ancient altar.
What Gu Fei was worried about finally happened. The ancient altar began to emit mysterious runes, and the space above the altar gradually became unstable. In the end, spatial cracks began to appear in the void above the altar.
"Roar!" The void shattered, and a shrill roar suddenly rang out from the shattered void, causing the whole valley to shake. The roar was so abrupt that it seemed to come from beyond the nine heavens, and also seemed to come from the shattered void of ancient times.
Then, amidst the deafening thunder, the figure of a ferocious Undead creature began to walk out of the shattered void above the altar.
It was a white skeleton, sparkling and translucent like divine jade, emitting an incomparably powerful aura. Inside the skull, there was a resplendent soul fire that was as dazzling as the sun, as exuberant as a divine flame.
This was definitely a "king" -level Undead King.
Gu Fei turned pale with fright. He hurriedly hid, and the pale purple vertical mark between his eyebrows began to emit waves of inner space power that enveloped him.
Only in this way could he escape the detection of the Undead King. With a king coming out of the Ruin Sky Realm, the Northernmost Demon Region would probably face an unimaginable storm.
The spatial passageway formed by the shattered void quickly disappeared. After the Undead King walked out of the spatial passageway, he immediately shocked the surrounding scene.
Countless illusory figures were fighting, emitting a terrifying killing intent. Even the White Bone King was extremely shocked and incredulous.
The entire ancient ruins suddenly shook violently. Then, an incomparably powerful illusory figure appeared above the ancient ruins.
That misty figure, which gave off an unreal feeling, stared at the White Bone King on the altar. A terrifying killing intent formed a beam of killing light that shot towards the White Bone King on the altar.
The soul fire in the White Bone King's skull flickered violently. Then, he stretched out a sparkling jade-like palm and directly met the terrifying killing intent.
"Bang!"
The jade-like palm and the dazzling killing light instantly collided. Something that Gu Fei couldn't believe happened. The White Bone King on the altar was actually blasted off the altar by the killing intent.
The terrifying killing intent formed a killing light that covered the White Bone King's jade-like palm with spiderweb-like cracks, as if it could shatter at any moment. That was an Immortal God Bone Body that was even harder than divine metal.
After being blasted off the altar, the White Bone King roared again and again. He was in big trouble. He fell among the countless ancient figures that were fighting desperately below the altar.
It was the faint and illusory figure of an ancient warrior that had gone through the baptism of countless years. The terrifying killing intent still hadn't dissipated, and it had never been extinguished.
In this pitch-black stormy night, an unimaginable phenomenon appeared in the ancient ruins. This meant that the ancient ruins hid a great secret that no one knew about.
The White Bone King, who had fallen off the altar, received an unimaginable blow. The terrifying killing intent directly attacked the soul fire in its skull.
This was an attack that came from the soul. It was difficult to defend against. The White Bone King immediately suffered unimaginable damage, and the soul fire in its skull gradually dimmed.
The tall figure that had blasted the White Bone King off the altar once again closed in on the White Bone King. The terrifying killing intent once again formed a terrifying killing light that blasted directly at the White Bone King's chest.
"Crack!" With a loud sound, three of the White Bone King's ribs were immediately broken. Its body suffered an unimaginable blow, and cracks appeared on its bones.
The White Bone King was directly blasted hundreds of meters away. With a bang, it landed right at the edge of the ancient ruins.
The White Bone King had suffered a series of serious injuries. How could it dare to stay? It directly rushed out of the ground and turned into a ray of white light, rushing out of the valley in a panic.
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