The Qingyun Sacred Mountain stood tall, serving as the old lair of the Qingyun Saint Sect, a top-tier overlord-level faction before the great upheaval of heaven and earth.

Numerous Small Worlds had been opened up inside the Qingyun Sacred Mountain.

They were used to nurture fresh blood for the Saint Sect.

Therefore, they had been able to persist until now even though most of the outside regions were occupied by the 'Devils'.

In the Qingyun Institute, Lin Yuan had not changed much compared to a thousand years ago, except that his Qi was much more restrained.

"Steward Chen, they all say that the 'Devils' are immortal and indestructible. Is there really no way to completely eradicate the 'Devils'?"

A young Disciple had just finished exchanging for the required Jade Slip, and looking at Lin Yuan, could not help asking.

Over the past thousand years, Lin Yuan had kept a low profile in the Qingyun Institute, occasionally guiding newcomers with their doubts. Over time, he had gained quite a reputation, and many Disciples were willing to consult Lin Yuan.

"Devils originate from the Devilish Qi of heaven and earth. As long as the Devilish Qi is not destroyed, the Devils will not perish," Lin Yuan said calmly. "To completely eliminate the Devils in this world, we must erase the source of the Devilish Qi."

The so-called source of the Devilish Qi was the legendary Devil God.

Having descended into this Origin World for a thousand years, Lin Yuan had also learned of many hidden secrets.

Take Devilish Qi, for example? If Devilish Qi were compared to sunlight, then the Devil God would be the sun.

As long as the sun was there, the Devilish Qi would flow endlessly. Even if a terrifying 'Devil' was completely annihilated, it would be nurtured anew under the endless Devilish Qi.

"How do we erase the source of the Devilish Qi?"

The young Disciple continued to ask.

"I am not sure either."

Lin Yuan shook his head, although he sensed that all Devilish Qi originated from the Devil God.

But as to where the Devil God actually was, Lin Yuan did not know.

In fact, even if he knew, he would not attempt to erase it. After all, being able to brew a 'Devil' calamity that affected the entire Origin World, the Devil God's strength was at least at the level of the Thirteenth Order.

"Alright, you don't need to think too much about it," Lin Yuan said casually, glancing at the worried young Disciple.

"Mm."

The young Disciple nodded and immediately left the Qingyun Institute.

As soon as he walked to the entrance of the Qingyun Institute, several other young Disciples gathered around.

"Ouyang, what did you say to Steward Chen?" These young Disciples were quite curious.

"I asked how to completely eradicate the 'Devils' in the outside world," the young Disciple named Ouyang said truthfully.

"What did Steward Chen say?"

"Steward Chen said that to eliminate the Devils, we must erase the source of the Devilish Qi,"

Ouyang said.

"Erase the source of the Devilish Qi?"

Several young Disciples pondered for a moment.

They did not doubt Lin Yuan's reply. Over the past thousand years, Steward Chen of the Qingyun Institute had never displayed any formidable strength or means, but he was knowledgeable and experienced. Even the Elders of the Saint Sect would occasionally come to consult him.

"Sigh, with Steward Chen's understanding of the 'Devils', I wonder why he stays in the Qingyun Institute? Wouldn't it be better to go to the outside world and clear out the places where Devilish Qi gathers?"

"It is said that a thousand years ago, during an operation to clear out a gathering place of Devilish Qi, Steward Chen was eroded by Devilish Qi, leaving behind certain hidden injuries."

"So that's how it is! Steward Chen has made such a huge contribution to our Saint Sect!"

Several young Disciples looked at him with deep respect.

Being eroded by Devilish Qi had severe consequences, and very few survived.

Deep within the Qingyun Institute, Lin Yuan sat cross-legged.

"The waters of this Origin World are very deep. Those Eternal Sects in the Central Heaven surely have Time Lifeforms guarding them, yet they let the Devilish Qi pervade. What on earth is the reason for this?"

Lin Yuan's expression was slightly solemn. This was also why, eight hundred years ago, even after recovering his Peak strength, he still hid in the Qingyun Sacred Mountain.

He could not figure out the background of the outside world.

Furthermore, hiding in the Qingyun Sacred Mountain did not delay Lin Yuan from Cultivating and comprehending the Dao.

The rune Legacy collected by the Qingyun Saint Sect was enough for Lin Yuan to comprehend for hundreds or thousands of years.

Moreover, Lin Yuan needed a lot of time to slowly open up his own particle worlds. Coupled with the fact that Devilish Qi filled the outside world and 'Devils' were everywhere, whenever Lin Yuan lacked resources, he would go out for a trip and basically return with a full load.

To the cultivators of this world, every single 'Devil' was terrifyingly boundless, but in Lin Yuan's eyes, the so-called 'Devils' were just little chicks. Even someone as strong as a Great Devil could be easily suppressed and quickly refined by Lin Yuan.

If not for his apprehension towards the Devil God, Lin Yuan would have long gone to the Central Heaven to hunt those Source Demons.

"After a thousand years of Cultivating, the Chaotic Yin Yang Taiji Path has already reached the Peak of the first level. In as short as a few hundred years or as long as a few thousand years, I can step into the second level."

A smile appeared on Lin Yuan's face. The Chaotic Yin Yang Taiji Path was his Foundation, and even his current means of refining many terrifying 'Devils' utilized the Chaotic Yin-Yang Taiji Power.

The stronger the Chaotic Yin Yang Taiji Path was, the greater the help it would be to Lin Yuan. This kind of help was a fundamental assistance, nurturing everything about himself with the Dao he walked upon—his Physical Body, Soul, mental will, and so on.

"There is also the Thirteenth Order Legacy, 'Infinite Void'."

After a thousand years of polishing and Cultivating, this Legacy had also walked halfway through the progress of the fourth layer.

Through a thousand years of Cultivating, Lin Yuan had made sufficient progress in all aspects, especially after comprehending the rune Legacy of the Second Source World. It was of tremendous help in comprehending various rules and the Dao.

Of course, among all the gains, the greatest was still the opening up of particle worlds.

Using The Dao of Runes to stabilize every single particle world, coupled with the 'inexhaustible' Devils of this Origin World,

the number of particle worlds that Lin Yuan had currently opened up had already reached ten billion.

Ten billion particle worlds.

Although there was still some distance from Lin Yuan's ultimate goal—the Ganges-sand number of particle worlds—

the blessing of ten billion particle worlds to Lin Yuan could be described as terrifying.

Currently, Lin Yuan had three true physical avatars, located respectively in the Chaos Void, the First Source World, and the Second Source World.

But in terms of strength, the strongest true physical avatar was the one in the Second Source World. This supremacy was undisputed.

Even factoring in the advantages of the internal Universe in the Chaos Void and the Blazing Sun Divine Body of the First Source World, they still fell far short of the true physical avatar in the current Origin World.

"I am different from Abyssal Dragon."

"The particle worlds opened up by Abyssal Dragon are just ordinary particle worlds."

"As for the particle worlds I have opened up, every single one of them has been reconstructed through the Legacy of 'Infinite Void'."

Lin Yuan was radiant with spirit. The Thirteenth Order Legacy, 'Infinite Void', was a Legacy targeting worlds. As long as it was a world, it could be Cultivated, and particle worlds were also worlds.

Precisely because of this, the blessing of merely ten billion particle worlds to Lin Yuan was close to matching Abyssal Dragon's entire body of Ganges-sand particle worlds.

"So far, the opening up of the particle worlds is entirely normal, but I should wait until it is completely successfully refined before saying more,"

Lin Yuan thought to himself. Currently, his true physical avatar in the Second Source World was a pioneer, exploring whether there were any dangers in opening up particle worlds.

If everything went smoothly, once this true physical avatar completely finished opening up the Ganges-sand particle worlds, it would be the time for the other two true physical avatars to Cultivate.

The reason why the true physical avatar in the Second Source World was currently the strongest was because the other two true physical avatars had not yet begun opening up particle worlds.

"Although the Devils of the outside world are said to be endless, over the past thousand years, with my hunting, the 'Devils' have noticeably decreased a lot,"

Lin Yuan thought to himself.

A devil spirit could provide Lin Yuan with hundreds to a thousand particle worlds to open up.

A Great Devil could provide Lin Yuan with the resource energy to open up hundreds of thousands to millions of particle worlds.

And so far, Lin Yuan had opened up a total of ten billion particle worlds; one could imagine how many devil spirits and Great Devils he had hunted.

Although it was said that Devils would not die, once their devil bodies were completely annihilated, even if they recovered, it would take a massive amount of time to do so.

"It seems I need to expand my hunting range next; only then can I hunt more Great Devils," Lin Yuan thought to himself. Along with continuously opening up particle worlds, he also knew how enormous the resources he needed were.

Chaos Void.

Lin Yuan sat cross-legged in a certain Barren Void, wisps of Qi intertwining and lingering before him, constantly forming runes. Every single rune seemed to be the external manifestation of the Great Dao of heaven and earth.

"The Dao of Runes is indeed useful."

"It easily replicates numerous rule Daos, lowering the threshold of Cultivation by a huge margin."

Lin Yuan thought to himself. Perceiving intangible Dao rules and perceiving tangible Dao rules naturally had different levels of difficulty.

"Before the great upheaval of heaven and earth in the Second Source World, the number of Experts must have been astonishing." Although Lin Yuan did not know the grand state before the great upheaval of heaven and earth, judging from the usefulness of The Dao of Runes, he inferred that it was definitely an incomparably brilliant era of Cultivation.

It was estimated that Experts of the third realm of Leisure, comparable to the Invincible Great Saint of the Chaos Void, would frequently appear.

One must know that even in the Six Ancient Kingdoms nurtured by the Six Ancestors, there wouldn't be many Strongest Celestial Venerables truly comparable to the Invincible Great Saint.

"Unfortunately, I have basically comprehended most of the rune Legacies currently mastered by the Qingyun Saint Sect. If I want to comprehend deeper rune Legacies, I must find more powerful Sect factions."

Lin Yuan felt somewhat helpless in his heart.

More powerful Sect factions? Nowadays, which of the Sect factions that could be passed down under the ravages of the endless 'Devils' was not extremely secretive? Trying to find the lairs of such factions was as difficult as ascending to heaven.

Lin Yuan knew where those Eternal Sect factions in the Central Heaven were, but the risk of going there was still too great. If possible, Lin Yuan still planned to finish opening up the Ganges-sand particle worlds before talking about it.

"Take it slow. At worst, I will comprehend the subsequent parts of The Dao of Runes myself." Lin Yuan thought.

Lin Yuan thought to himself. On the premise of having obtained part of The Dao of Runes Legacy, with Lin Yuan's Heaven-Defying Comprehension, he could indeed try to create the subsequent parts.

But it would take too long, and whether it could compare to the original The Dao of Runes was also uncertain. At least for now, Lin Yuan was very sure that the development and perfection of The Dao of Runes must have been experienced by one Thirteen Step Time Life after another.

Such a method of simplifying the Dao rules could only be achieved by a Thirteen Step Time Life standing on high and looking far.

Thirteen Step Time Life? Lin Yuan did not feel that his Comprehension Ability was lower than that of a Time Lifeform, but the height at which the Time Lifeform stood was different from his, and the scenery they saw was also different. Lin Yuan still valued The Dao of Runes created by them very much.

"Let's continue."

Lin Yuan glanced around the Barren Void. Hundreds of years ago, he had left the Milky Way Chaos Continent and walked through the Chaos Void, trying to comprehend the operation of the entire Chaos Void.

Of course, in the Milky Way Chaos Continent, he also left behind an Incarnation that could descend at any time.

Moreover, given Lin Yuan's current prestige in the Chaos Void as the Invincible Great Saint who had attained the name of invincibility the fastest in history, this point alone guaranteed the safety of the Milky Way Chaos Continent.

No Great Saint dared to cause trouble on the Milky Way Chaos Continent.

Qingyun Sacred Mountain.

Inside the highest hall.

The Sect Master and various Elders gathered.

"Over the past thousand years, the number of 'Devils' nearby has noticeably decreased," an Elder said with a puzzled expression.

Those young Disciples might not notice it, but beings at the Elder level had experienced successive attacks on the mountain by Great Devils, and had also wiped out many places where Devilish Qi gathered nearby, occasionally encountering some devil spirits.

The threat of a devil spirit was far inferior to that of a Great Devil. Encountering devil spirits, the Elders were not worried either; with the perception of devil spirits, they probably wouldn't even be able to discover the existence of the Qingyun Sacred Mountain.

But no matter how weak a devil spirit was, it was still a 'Devil' and shouldn't just mysteriously disappear.

Especially now, the number of mysteriously disappearing 'devil spirits' was so large that many Elders found it incredible.

"Isn't it a good thing that the number of Devils is decreasing?"

A small minority of Elders were somewhat confused. Wouldn't the fewer 'Devils' near the Qingyun Sacred Mountain mean the safer the Sacred Mountain would be?

"You cannot think like that."

At this moment, the Qingyun Saint Sect Sect Master spoke in a low voice:

"Most 'Devils' tend to reside permanently in a certain area. When the 'Devils' in an area decrease, there are two possibilities."

"First, a more powerful 'Devil' has appeared in this area, causing other 'Devils' to instinctively retreat."

"Thus resulting in the scene where the number of 'Devils' decreases."

Speaking to this point, the Qingyun Saint Sect Sect Master paused for a moment before continuing:

"The second possibility is that the 'Devils' in this area have been devoured, which is why they have decreased."

As soon as these words were spoken,

the expressions of all the Elders changed slightly.

The 'Devils' were devoured?

Those capable of devouring 'Devils' were most likely those who had fallen into devilry.

And as those who had fallen into devilry grew in strength, they would move closer to becoming true 'Devils'.

A powerful devilized being was actually no different from most 'Devils'. They might retain fragmented memories, but their emotions were basically erased, and even as they continued to grow stronger, their memories would rapidly dissipate.

"A devilized being? Has another devilized being appeared in our Saint Sect?"

An Elder looked terrified. Even they could sense that the number of 'Devils' in the nearby area had decreased, so one could imagine how many Devils this devilized being had devoured.

Having devoured so many 'Devils', even if the devilized being's strength had not touched the Domain of the Three Realms of Leisure, it probably wasn't far behind.

Compared to the 'Devils' of the outside world, a devilized being would be even more terrifying. He would hide within the Sacred Mountain, not knowing when he would launch a strike.

"Not necessarily. Perhaps it is the first possibility, or perhaps it is other possibilities we haven't considered."

The Qingyun Saint Sect Sect Master spoke.

In fact, whichever possibility it was, it was by no means a good thing.

With the Devils in this area decreasing and losing a large number of 'Devils' exhaling Devilish Qi, the concentration of Devilish Qi nearby would slowly rise, which would attract the attention of more distant and powerful 'Devils'.