He only knew that it would be soon.

Soon, but even the Bone Demon didn’t know how long it would take.

Therefore, in his invisible and ethereal state, Su Jingxing avoided the Half-Demons in the Demon Cloud Forest and chose to hide in the crown of a dense ancient tree. He waited patiently.

To prevent the demonic creatures from passing through the dark door and entering the Demon’s Den again, the Essence Soul in the Yu Nation’s Void World descended and traversed through space to pick up the Blood Doppelganger that was rushing back and bring it to Dongting Mountain.

The Essence Soul returned to the Void World to guard it, while the Blood Doppelganger went to the bottom of the Demon’s Den to guard the Door of Darkness.

After all, Su Jingxing had killed a team of demon slaves, a dozen Half-Demons, and a Half-Demon Overlord.

After the Bone Demon Beasts discovered that, in their rage, there was a 90% chance that they would pass through the Door of Darkness.

However, things developed beyond Su Jingxing’s expectations.

Nothing happened.

The Blood Doppelganger guarded the Door of Darkness for several days, and no Half-Demons or demon slaves had passed through it.

It seemed that no one… no, none of the demons cared about the whereabouts of the Half-Demons and demon slaves that Su Jingxing had killed.

This surprised Su Jingxing and amused him.

Indeed, according to Baletuodor’s memories, demon slaves would fight and devour each other. Although Half-Demons were slightly better, their relationship was only average. As long as they did not affect other demons, no demon would care about them.

Unless the Half-Demon Overlord above forcefully gave an order.

This saved Su Jingxing a lot of trouble.

In the crown of the ancient tree, less than 200 meters away, he locked onto a Demon Soul Fruit Tree and waited for its fruits to fully ripen.

…

Furious Dragon River.

The longest river in the Eastern Continent ran through three countries.

Among them was a section of the border between Zheng Nation and Wei Nation.

The north of the river was the Wei Nation, and the south of the river was the Zheng Nation.

At this moment, downstream of the waters of the Furious Dragon River in the Zheng Nation and Wei Nation, in the depths of a mountain peak that was hundreds of meters deep and close to the river.

“Hmph, I knew that Kong fellow was up to no good!”

Luo Ao looked at the extremely quiet Demon’s Den and sneered. “Where is there any sign of a commotion?”

“Don’t be careless.”

On the side, the Wei Nation’s Martial Sage shook his head and said softly, “Although the Demon’s Den here hasn’t erupted, the aura at the bottom is indeed stronger than before.”

“That’s the movement of demonic energy. It’s been thousands of years, when hasn’t it been like this?” Luo Ao disagreed.

As the Martial Sage of the Zheng Nation, it was his duty. After receiving Su Jingxing’s reminder, Luo Ao immediately rushed to the Demon’s Den that was located at the border between the Zheng Nation and the Wei Nation to check on the situation.

In the end, nothing happened. The Demon’s Den was very stable.

Luo Ao quickly left and returned to Zheng Nation.

This time, Wei Nation’s Martial Sage was alarmed and invited him over again to check on the situation. Just in case, he made another trip.

The martial arts cultivated by the Martial Sage of the Wei Nation were somewhat special. He could forebode some important matters.

It was precisely because he sensed danger coming from the Demon’s Den that the two of them came to investigate.

“It’s different.”

The Wei Nation’s Martial Sage pondered. “It’s different this time. Something is very wrong.”

“Maybe you’re thinking too much, or maybe you were frightened by that Kong fellow.”

Luo Ao sneered. “When the Demon’s Den on his side rioted, he suspected that ours would do the same. That’s complete nonsense! The Demon’s Dens are not connected, so how could it be possible for a commotion in one place to lead to that in the other places as well?

“In my opinion, everyone has been fooled by that Kong fellow! It’s understandable that there are demonic creatures in the Devil’s Den, but all that talk about the Door of Darkness is pure nonsense…”

Boom!

Suddenly, the ground shook violently, and the entire mountain shook.

In the calm passageway of the Demon’s Den, surging demonic energy surged out like smoke signals, sweeping through the underground space.

“Impossible!”

Luo Ao’s eyes widened in shock. “That Kong fellow is telling the truth. The Demon’s Den is really in chaos!”

“If it’s just the demonic energy surging, it won’t affect us much, but if…”

The Wei Nation’s Martial Sage did not finish his sentence.

But Luo Ao could tell what he meant.

When demonic energy raged, it would at most contaminate the entire mountain.

However, if the demonic creatures were to riot and crawl out of the Demon’s Den, things would be troublesome.

“Demonic creatures, are there really demonic creatures?”

murmured Luo Ao, his gaze fixed on the Demon’s Den.

From above, they avoided the impact of the demonic energy and looked down at the movements in the passageway.

Hu hu hu!

Masses of demonic energy spewed out non-stop.

Luo Ao and the Wei Nation’s Martial Sage glowed to resist the invasion of the demonic energy.

The two of them guarded the entrance of the Demon’s Den and kept their eyes on the passageway.

Finally——

Hiss! Hiss! Hiss! Hiss!

A strange sound like a snake spitting out its tongue came from the passageway of the Demon’s Den. It was getting closer and closer.

Boom!

Accompanied by a foul smell, a huge figure darted out from the cave and attacked Luo Ao.

Swoosh!

Without moving, Luo Ao released a ray of sword energy from his body and struck the figure that was charging towards him.

Bang!

The air exploded and light burst out.

The huge figure was sent flying by the immense force and crashed into the cave wall, creating a pit.

When it slid down the cave wall, its entire appearance was revealed.

The lower half of the snake’s body and the upper limbs of a human. It had arms, but above them was the head of a snake, the neck of a cobra, and the back of the head was arched.

Its huge body was mainly more than 20 meters long and bloated. At this moment, it was coiled up and sticking out its long snake tongue. Its cold gaze was fixed on Luo Ao and his companion.

Roar!

With a long roar, from the passageway, another one…

No, two, three figures.

As soon as these three figures appeared, they pounced at Luo Ao and company.

Together with the Snake Demon Beast guarding at the side, there were a total of four demonic creatures. They surrounded the duo and launched an attack.

“Kill them!”

Luo Ao shouted angrily. Sword beams bloomed around him as sword energy shot out.

The Wei Nation’s Martial Sage was about the same. His figure flashed as he charged left and right with two crescent blades in hand.

Swoosh! Swoosh! Swoosh!

Plkch! Plkch! Plkch!

Sword beam, saber beam, sword energy, and saber energy filled the underground space.

Although the four demonic creatures had astonishing defense, they were still no match for Luo Ao and company. They were slashed into pieces one after another, becoming deader than dead.

The overflowing demonic energy lingered in the air for a long time.

“D*mned demonic creatures.”

Retracting his sword energy, Luo Ao lowered his head and looked down at the Demon’s Den. He focused his vision and pointed at the bottom of the den.

Soon, his expression turned grim. “There are many more of these snake demons below. We can’t let them come up!”

With that, he jumped into the den.

Buzz!

The air rattled as sword beams bloomed.

Materialized sword energy surrounded Luo Ao’s body and wrapped around him. As he fell, he crashed into the Snake Demon Beasts climbing up.

In an instant——

Plkch! Plkch! Plkch!

Roar! Roar! Roar!

The blade-like sword energy spun rapidly and killed many beasts.

Luo Ao endured the pressure and sliced his way to the bottom of the den.

Everywhere it passed, the Snake Demon Beasts were dismembered inch by inch, and blood splattered on the walls.

The demonic energy that seeped out filled the entire corridor.

It wasn’t until he passed through the passageway and stepped onto the bottom of the Demon’s Den, standing on the piles of Snake Demon Beast corpses and looking into the distance that Luo Ao’s pupils constricted.

Swoosh!

The saber beam passed through the passageway of the Demon’s Den.

The Martial Sage of Wei came chasing after him.

“Brother Luo, are you alright?”

The Wei Nation’s Martial Sage looked around and said, “We don’t know where these snake demons came from. If we don’t figure it out…”

His words trailed off.

His eyes widened as he followed Luo Ao’s gaze and looked towards a tall black door in the distance of underground space where they were. He became stunned.

“Re… really?”

The Martial Sage of the Wei Nation gritted his teeth and came back to his senses. He said in shock, “The new Martial Sage of the Yu Nation, Kong Xuan, was telling the truth. There is really a Door of Darkness under every Demon’s Den!”

…

The Void World.

Yu Nation’s region.

Su Jingxing’s Essence Soul thought about what martial art to create.

A sudden thought came to him. Why should I lean towards a certain attribute or ability?

Why can’t this martial art contain everything?

That’s right. After much thought, Su Jingxing’s Essence Soul abandoned all the concepts it had come up with during this period of time.

Instead, it put all its ideas together.

Like the sea, it contained everything.

All rivers flow into the sea!

In any case, it’s just a theory. Why not give it a try?

At the thought of this, Su Jingxing’s Essence Soul held back its excitement and following the final idea that had been confirmed, it extended and supplemented logically.

Half an hour later, the theory was completed!