Violence, ferocity, killing, all kinds of negative emotions instantly emerged from the bottom of his heart, which also made Shi Feiyu's face change suddenly.

Under the influence of this negative emotion, even the breath in the body became violent.

And that kind of fury also has a hint of coldness to the bone.

Almost instantly, the mind was swallowed up by endless darkness.

As far as the eye could see, there was pitch black as ink, a kind of summoning voice that seemed to come from ancient times, ethereal, constantly guiding him towards the depths of darkness.

The mind full of violence was in a trance, as if it was uncontrollably following the ethereal sound.

The voice is a little hoarse, but it is extremely soft, like a fresh breeze, which makes people feel comfortable after listening to it.

But no matter how you tell the difference, you can't hear what this voice is trying to say.

It was more like a whispered murmur, or a groan* full of pain.

The mind followed as if it were a call from ancient times, going farther and farther, and the temperature around it was also constantly decreasing.

The soft murmur in my ears has always lingered, and as long as my mind resists a little, it will be soothed by that sound.

Under the call of that voice, the mind has unconsciously become numb and unable to think.

It seemed like a long time, and it seemed like a moment, and the mind that fell into endless darkness suddenly encountered a flash of light.

This point of light was also pitch black, but strangely enough, Shi Feiyu could clearly see it in the endless darkness.

The point of light was small at first, but it soon grew larger as his mind progressed.

When it came to the black point of light, it was a figure burning with a raging demonic flame.

This figure sat in the endless darkness, palms of his hands upward, and his ten fingers formed strange marks, as if he was practicing some kind of mystical technique.

And the demonic flames that swirl around its body seem to have life, constantly changing various forms,

The soft murmur came from the body of this figure, and it was so close that it could be vaguely heard, as if it was talking about darkness...... Demon Heart...... Or whatever.

The sound was weird, not like it was made by one person at all, but more like the hollow sound of a wind chime swaying.

Just as Shi Feiyu's mind was uncontrollable and gradually approaching the figure, the demonic flames in his body suddenly surged, causing the entire endless darkness to set off monstrous ripples.

In the next moment, within the monstrous ripples as black as ink, countless undead with hideous faces appeared and pounced on him.

Thousands, countless undead were hidden in the dark demon flames, and they roared silently and rushed wildly, which also made Shi Feiyu's heart suddenly shocked, and he actually got rid of the confusion of that murmuring sound.

The moment the voice disappeared, Shi Feiyu's mind returned to his body.

The moment he opened his eyes, the breath in his body surged in a state he had never seen before.

Under the surge of that aura, the source force was extremely chaotic, and the source force in several meridians began to swim upstream, forming a hedge.

If it weren't for the fact that his physique far exceeded the ordinary reincarnation mirror, I am afraid that before he woke up, he would be hit hard by the terrifying source force.

Fortunately, before cultivating, the Heavenly Absolute Demon Body opened on its own under the attraction of the Dark Demon Flame, allowing him to escape.

With a thick horror in his eyes, Shi Feiyu immediately activated the Heavenly Demon Transformation Decision to redirect the source power of chaos.

When everything calmed down, he breathed a sigh of relief.

Only then did he realize that the robes on his body had already been soaked in cold sweat.

If it hadn't been for the army of the undead in the endless darkness just now, I'm afraid he would have gone mad and exploded to his death.

"Good ...... Risk"

Taking a deep breath and suppressing the fear in his heart, Shi Feiyu muttered to himself.

The demonic flames that swirled around his body had receded at some point, and his mind sank into his body, and he found that the source power was actually a little purer than before.

Such a discovery also made Shi Feiyu secretly surprised in his heart, no wonder those geniuses and demons in the academy cultivated so fast.

It seems that as long as you are in the Demon King's Tomb, the source power will not know how to condense it.

With such an advantage, it is difficult to cultivate without growth.

But Shi Feiyu then found that he wanted to continue the retreat, and the demonic flames no longer appeared on the black stone round platform.

This also made him understand that if he wanted to continue cultivating, he had to pay points again.

Helplessly, getting up and leaving this cave, Shi Feiyu was just about to turn around to find Elder Guo Chen, but his gaze inadvertently swept over the depths of the Demon King's Ancient Tomb.

In this vast basin, which covers an area of more than a thousand meters, there are many similar openings carved into the surrounding stone walls.

And he stood at the entrance of the cave and looked forward, but it was pitch black and he couldn't see anything clearly.

Although he couldn't see clearly, Shi Feiyu was still able to find that there were many energy fluctuations on the stone walls around the basin with his keen divine soul perception.

After a little hesitation, he didn't go to Elder Guo Chen, but walked down the plank road under his feet.

The plank road was built around the basin, and after walking for less than ten minutes, two dark iron gates suddenly appeared in front.

The darkiron door was not closed, and when he entered, he immediately found two sharp eyes sweeping behind the door.

These two people were about thirty or forty years old, and their faces were relatively unfamiliar, and when they saw him come in, one of them first looked at him in bewilderment, and then stretched out his right hand expressionlessly.

Slightly stunned, Shi Feiyu understood what he meant, and took out the magic crystal card on his body.

The man didn't speak, took the magic crystal card, swiped straight away twenty points, and then threw it back to him.

It seems that not every floor of the Demon King Tomb requires ten points, and the further down you go, the more points you use.

Although the twenty points made Shi Feiyu feel a little distressed, it was also within an acceptable range.

Put away the magic crystal card, nodded at the two elders on duty, and immediately entered the second floor of the Demon King Tomb.

found a stone cave on the second floor where no one was there, and in less than half an hour, Shi Feiyu walked out again, frowning.

I went in to practice before, but somehow, after the demonic flame emerged, it quickly disappeared, and no matter how I ran the exercises, I couldn't trigger it.

With a hint of doubt, Shi Feiyu simply went straight to the third floor of the ancient tomb.

The same dark iron gate, two different elders on duty, and this time he had to pay thirty points.

Based on this, Shi Feiyu also deduced that every floor of the Demon King Tomb would be charged ten more points.

Less than half a day after coming in, 60 points were crossed off the card, which was also a bit unacceptable to him.

There are not as many stone caves on the third floor of the Demon King's Tomb as there are on the second floor, and most of the stone caves have never been occupied.

Randomly found one to enter, a light curtain emerged, sealing the entrance to the cave, and Shi Feiyu sat down.

The moment he sat cross-legged, a fierce flame erupted from the black stone round platform beneath him.

As the flames rose, the surrounding space was quietly distorted.

But Shi Feiyu still found that this flame did not have any burning pain, but only a stinging pain similar to a needle prick.

The Heavenly Demon Transformation Decision was quietly running, and the source power flowed rapidly, and there were soon bursts of roar in the body.

The violent mood reappeared, and his mind changed slightly.

However, compared to the first time I came into contact with this kind of thing, it is not as difficult to deal with as it was at the beginning.

But he didn't know that even the peak cultivation of the late stage of the reincarnation mirror like Zhuang Kai and Wen Zi'an could only be cultivated at the first or second level.

This demon king tomb has three floors, and it can only be insisted on when entering the holy realm.

If people learn that he is only in the middle stage of the reincarnation mirror, and dares to practice in this three-layer retreat, I am afraid that his jaw will immediately drop.

Stick to your mind, no matter how negative emotions invade, the Lingtai always maintains a trace of clarity.

Time passed slowly, and the demonic flames that swirled around him flickered and dimmed, reflecting in the cavern, which was extremely strange.

After a whole day of this state, Shi Feiyu's eyes suddenly opened, and a powerful source power fluctuation immediately emerged from his body.

And his face showed a hint of hope: "It's finally going to break through." ”

Before, Shi Feiyu's cultivation had reached the peak of the middle stage of the reincarnation mirror for a long time, and there was no sign of a breakthrough.

This time I entered the Demon King's Tomb to seek an opportunity to break through.

I didn't expect this kind of opportunity to appear so quickly under the attraction of the Dark Demon Flame.

With a hint of joy on his face, Shi Feiyu hurriedly gathered his mind and turned the Heavenly Demon Transformation into a crazy operation.

As the exercises ran wildly, the entire cave seemed to tremble slightly.

Huge source power fluctuations continued to impact the surrounding stone walls, blending with the dark demonic flames.

Suddenly, after a muffled buzz, all the space inside the cavern collapsed.

Shi Feiyu, sitting in the collapsed space, is like a rock from all over the ages, standing still.

In his head, he heard the previous murmur again.

However, this time the voice was clearer, and Shi Feiyu could vaguely distinguish a few words, as if to say that the darkness was boundless, and the demon heart had just woken up......

As for the back, the sound is too ethereal to be heard.

Rumble!

As the hoarse and ethereal voice sounded, the demonic patterns in Shi Feiyu's body appeared again, turning into terrifying flames and exploding.

Demonic patterns seep out of the body and gradually form on the surface of its body, combining like a mysterious totem.

And the aura on Shi Feiyu's body also skyrocketed because of this, breaking through the barrier in an instant, reaching the late stage of the reincarnation mirror.

But he didn't end his cultivation because of this, on the contrary, the flow of the source power in his body became faster and faster, even to an unprecedented level.

Streams of majestic source power rushed along the meridians, and in the end, many dense bulges appeared on the surface of his body.

It was as if the meridians in his body were under unimaginable pressure and were about to burst.

And Shi Feiyu's face became slightly hideous because of this, the green tendons flared up, and his round eyes became red as if they were bloodshot.

The situation was precarious, and if it continued to operate in this way, sooner or later the meridians would be torn apart by that majestic source force.

But now, it's too late to stop.

The Heavenly Demon Transformation is running wildly, as if it is a wild horse that has escaped from the bridle and is not under control.

Bang! Bang!

In the next moment, the meridians on the chest, front and back bulged and burst open.

Its internal source power found an outlet in an instant, surging out like a mountain torrent bursting its banks.

A roar of pain suddenly came out of its mouth, more like the roar of a wild beast.

His eyes were blood-red, like a peerless demon full of violence.

Despite this, Shi Feiyu's mind did not fail, on the contrary, he was more aware of his situation than ever.

Suddenly, remembering the murmuring sound he had heard earlier, Shi Feiyu's heart couldn't help but shake violently, and then he muttered: "Darkness is boundless, the demon heart is awakening...... The Devil's Heart Awakens......"

Rumble!

As he continued to repeat, the violent clarity in his body gradually subsided.

And Shi Feiyu then discovered that he actually had a strange ability in his body, which was slowly taking shape.

He had envied this ability more than once, and he instantly recognized it, and immediately muttered to himself: "Darkness and unbounded ......"