Before Chen Yuan could prepare himself, a powerful suction force, ten times stronger than the Tai Xuan Scripture, suddenly erupted from his left arm.

It was like a funnel, constantly absorbing the baleful aura.

Within the cave around him, endless amounts of dark black baleful aura frantically drilled into Chen Yuan's body, as if it had suddenly hit the accelerator.

Moreover, it was completely beyond Chen Yuan's control!

"Damn it!"

Chen Yuan cursed under his breath, feeling rather frustrated.

The Blood Fiend Blade's mutation was completely unexpected!

It had actually proactively begun to absorb the blood baleful aura here. The endless baleful aura poured into his body, and a massive killing intent crazily impacted Chen Yuan's mind.

In that moment, Chen Yuan's eyes instantly turned bloodshot.

His entire body exuded a relentless killing intent, but it wasn't Chen Yuan's own. That deathly killing intent wanted to make Chen Yuan go mad!

Outside the cave, within Blackwind Valley.

On the ground, the Yin baleful aura, originally invisible to the naked eye, was now continuously surging up from the depths of the earth under the Blood Fiend Blade's influence. The dark black baleful aura rose into the sky.

From afar, it looked like a black wind was obscuring the entire valley.

A massive black vortex condensed above the cave, channeling Yin baleful aura into Chen Yuan like a funnel.

Chen Yuan, who was in the midst of condensing the baleful aura, tried to stop, but found that he couldn't control it at all!

The acupoints in his body were wide open, absorbing the baleful aura!

Within his dantian, the initially slow-moving Qi vortex suddenly accelerated. An excruciating pain spread throughout his body, and the meridians around him were about to burst.

Dark gold and dark black light intertwined on Chen Yuan's flesh.

Veins bulged, and cold sweat dripped down.

But this wasn't the most dangerous part. The most dangerous part was Chen Yuan's mind. While the baleful aura had the Blood Fiend Blade as an outlet, the endless killing intent didn't.

It all impacted Chen Yuan's mind.

Violence, curses, slaughter, death!

The extremely Yin blood baleful aura, unrefined by humans, was filled with a large amount of negative emotions. If he slowly converted and absorbed it, Chen Yuan could resist, but now...

There was almost no hope!

The Yin baleful aura in Blackwind Valley was condensing more and more. A strong wind blew, making it seem as if a demon had been born. Beneath the ground, spiritual patterns lit up.

This was a formation left behind by Northern Barbarian experts hundreds of years ago, and it was being activated.

Vaguely, Chen Yuan seemed to hear the sounds of war drums from the endless baleful aura...

Outside Blackwind Valley, a group of hunters and herbalists who had come up the mountain were stunned in place, muttering to themselves:

"Demons, demons!"

"It...it's from the direction of Blackwind Valley."

Someone exclaimed, filled with fear.

Since their childhood, they had heard legends that demons were suppressed within Blackwind Valley. Every night at midnight, ghosts would come seeking lives, and anyone who approached would be pulled in, never to be reborn.

Therefore, the people within a hundred miles of Blackwind Valley had designated this place as forbidden.

They never dared to cross the line. This was a lesson learned in blood. Some had vaguely seen mountain spirits roaming, scaring many people to death.

Except for the old man surnamed Pan, almost no one knew that there were actually a group of monkeys in Blackwind Valley.

He had been scared to death when he accidentally entered Blackwind Valley, but he had unexpectedly discovered the existence of a monkey troop. These monkeys also knew how to brew wine, which was how he had made his fortune with monkey wine.

Later, Old Pan's business entered the county town. To prevent others from knowing this secret, he secretly spread rumors that there were ghosts in Blackwind Valley.

"There really are ghosts inside!"

"In broad daylight, is this ghost about to be born?"

Some were trembling with fear, and some were shaking their legs.

"Run...run quickly, or the ghosts will eat you!"

"Report to the authorities, report to the authorities!"

With a whoosh, all the people wandering outside Blackwind Valley were frightened and ran away, afraid that the ghosts behind them would catch up.

But Chen Yuan knew nothing about these things.

He was almost at his limit at this moment. His eyes were already bloodshot, and the dark gold color on his body had mostly turned dark black.

From afar, he looked like a terrifying demon!

He was surrounded by black baleful aura, and unstoppable killing intent flowed from his eyes...

"Do you think you can do anything to me with just this Yin baleful aura!"

Chen Yuan roared, and the Qi and blood in his body surged. He slammed his fist into the ground.

"Boom."

The ground shook, and a pit the size of half a person appeared where Chen Yuan had punched.

Suddenly,

Just as Chen Yuan mobilized his Qi and blood to throw this punch, a clear spiritual energy seeped out from Chen Yuan's internal organs, slowly rising to his mind. The bloodshot in Chen Yuan's eyes began to fade...

He was suddenly shocked. This was... Phoenix Marrow Qi!

When Chen Yuan had refined the Phoenix Marrow Qi obtained from Shen Yanshu, he had felt that the Phoenix Marrow Qi hadn't been completely absorbed by him. It was just that the True Qi in his body had reached its limit.

After that, it had hidden in his internal organs.

Now, with the surge of Qi and blood, this Phoenix Marrow Qi had been awakened.

This was a big surprise for Chen Yuan.

He couldn't help but think of what Ye Chenbai had said before, that Phoenix Marrow Qi had the effect of enhancing cultivation, cleansing the internal organs, and clearing the mind... Now it seemed that it was indeed true!

This time, the Phoenix Marrow Qi had been a great help to Chen Yuan.

Before, when the Yin baleful killing intent had invaded his mind, Chen Yuan could only barely hold on. Even he didn't know how long he could last, maybe a quarter of an hour, maybe an hour.

He might not even be able to wait until the Blood Fiend Blade stopped.

When the Phoenix Marrow Spiritual Qi poured into his mind, Chen Yuan heard the endless cries of phoenixes in his ears. They were fighting and colliding with the violent killing intent. At this moment, Chen Yuan finally had the opportunity to observe his surroundings.

Everything was dark. The entire cave was now filled with浓郁 of black Qi, and the darkest part was around him, like a large magnet, with baleful aura gathering towards him from all directions.

"Boom!"

Outside the valley, above the black baleful aura, Yin rain slowly fell, and rumbling thunder echoed in Chen Yuan's ears. The rumbling thunder was extremely Yang,

As if to split apart the black baleful aura that had condensed into clouds.

Chen Yuan's left arm had now completely turned pitch black, becoming a black arm, but faintly, he could still see the vague mark of the Blood Fiend Blade.

Unceasingly...

It was still continuously absorbing the baleful aura, as if there was no limit, wanting to devour all the baleful aura in Blackwind Valley.

Chen Yuan had never expected such a mutation.

He couldn't help but speculate that perhaps the Destiny Altar had guided him to the Blood Fiend Blade for this day, and then Chen Yuan had obtained the Phoenix Marrow Qi, allowing him to protect his mind.

Although it was a bit far-fetched, it really made him feel that there was a deep connection.

Every opportunity was not just about the initial effect, but also had a deep connection to the future. If it weren't for the Phoenix Marrow Qi, Chen Yuan would have really been in danger this time.

Of course, if it weren't for the Blood Fiend Blade, Chen Yuan would have already broken through successfully, and there wouldn't have been any complications.

About half an hour later, the Blood Fiend Blade's speed of absorbing the baleful aura began to slow down gradually. It wasn't because it had reached its limit, but because the surrounding baleful aura was visibly thinning.

This made Chen Yuan a little surprised. He had previously planned to use this place as a treasure land. Whether it was for his subordinates to break through or to sell it to others, he could get great benefits.

Now it seemed...

He had thought too much. The Blood Fiend Blade didn't intend to leave even a trace of baleful aura, but devoured it all.

Now Chen Yuan finally understood the origin of the 'Blood Fiend' in the Blood Fiend Blade's name.

It could not only absorb blood, but also absorb baleful aura!

Absorbing blood could kill enemies, but Chen Yuan really didn't understand the effect of absorbing baleful aura.

Within his dantian, after this destruction of the baleful aura, it had transformed all the Qi vortex in his body into baleful aura. However, what was different was that the baleful aura vortex in his dantian was now only one-tenth of its original size...

This change was very... peculiar.

In Chen Yuan's understanding, and in the records of baleful aura condensation cultivators, it was enough to break through as long as one-third of the True Qi in the dantian was transformed into baleful aura.

Too much cultivation was as bad as too little. After that, one only needed to cultivate slowly to completely transform.

But now, all the True Qi in Chen Yuan's dantian had turned into baleful aura. However, unlike others, it was only one-tenth of the size of the original True Qi. He had broken through, but...

He didn't know if this change was good or bad.

After about another quarter of an hour, the Blood Fiend Blade completely stopped absorbing. Chen Yuan opened his Dharma Eye, and all the baleful aura in the cave was swept away.

Perhaps there was still baleful aura beneath the ground, but it would probably take tens or hundreds of years to store enough to cultivate and condense baleful aura.

Within Chen Yuan's dantian, that extremely pure black baleful aura quietly rotated. The Tai Xuan Scripture circulated, and the vitality of the world entered the dantian and was devoured by the baleful aura...

Chen Yuan could feel that the baleful aura had grown a little.

He raised his hand. The Tai Xuan Scripture was activated, and a dark black baleful aura appeared in Chen Yuan's palm. This was... external release of baleful aura!

The symbolic power of baleful aura condensation cultivators.

It was strengthened several times compared to the True Qi in his dantian.

With a thought, Chen Yuan suddenly waved his hand, and the baleful aura, like a black ball, slammed into the wall of the cave at an extremely fast speed.

"Boom!"

With a loud bang, a huge pit appeared on the wall, as if it had been bombed by a cannonball.

"It's actually so strong?"

Chen Yuan was shocked, feeling a little doubtful. He had fought with baleful aura condensation cultivators and knew that although baleful aura was strong, it was definitely not this strong.

Then there was only one explanation.

The baleful aura in his dantian had been refined by the Blood Fiend Blade, the purest Blood Fiend!

It was just that he didn't know how pure it was yet.

But this was enough to surprise Chen Yuan.

Although the baleful aura was small, the boost it gave Chen Yuan was even greater.

The difference in strength between his baleful aura and ordinary baleful aura could even be compared to the difference between True Qi and baleful aura.

"In this case, it was worth the risk."

The corners of Chen Yuan's mouth curled up slightly, revealing a smile.

Baleful aura condensation was complete, and Chen Yuan's strength had greatly increased from this!

Suddenly, before Chen Yuan could experiment further, the Blood Fiend Blade, which had just been silent for a moment, had another mutation...

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Thanks to book friends Wang Ziyezhuliu, *Xingui, and I Am Not a Private for their rewards and support!