The true body of Lin Yuan remained stationed at Azure World, his base, while the two primordial spirits—Yang and Yin—were sent to explore separately.
This was the safest method.
Whether it was the Yang Primordial Spirit or the Yin Primordial Spirit, their combat power was not much weaker than Lin Yuan's true body.
Even if they perished, Lin Yuan could reassemble them with just a thought.
This approach was highly secure.
Although the level of the boundless void wasn't as high as that of the main universe, Lin Yuan had never underestimated it. After all, the legendary ninth-stage evil gods could pose a slight threat to him.
Whoosh. Whoosh.
Under Lin Yuan's watchful gaze.
The Yang and Yin Primordial Spirits quickly left Azure World.
"The Void Secret Realm"
Following the coordinates from the scroll, the Yang Primordial Spirit quickly made its way to the entrance of the Void Secret Realm.
Given Lin Yuan's mastery of space-time, while it would have taken the Black Demon Pavilion Lord five to six days to reach the Void Secret Realm from Azure World, Lin Yuan only needed half an incense stick's time to get there.
"A Void Secret Realm where even the memory of entering is obscured—what kind of place is this?"
Lin Yuan was curious.
The human civilization of the main universe could achieve something like this, but that civilization had nine strongest ones protecting it.
"And what kind of benefits can be gained from slaying Void Creatures?"
The message in the scroll didn't mention any benefits, but Lin Yuan speculated that there must be some.
"Could it be the physical bodies of the Void Creatures, or perhaps some rare materials or treasures?" Lin Yuan pondered.
This seemed like the most reasonable guess. Just like how Lin Yuan could study the bodies of evil gods after slaying them, Void Creatures' bodies could probably be researched as well.
Soon enough.
Lin Yuan came to a stop.
"I've arrived."
Lin Yuan gazed at the boundless void before him.
From the outside, this void looked no different from any other part of the boundless void.
However, with the token from the scroll, Lin Yuan could faintly sense the existence of a mysterious space hidden deep within the void.
More precisely, it was the entrance to a mysterious space.
It was the entrance to the Void Secret Realm.
"What?"
Lin Yuan's expression shifted slightly.
Even without the token, Lin Yuan, using his understanding of space-time, could still detect the presence of the Void Secret Realm.
But this realization only made Lin Yuan more cautious.
He could sense the vastness of the Void Secret Realm—it was almost like another layer of the boundless void.
Moreover, the "entrance" before him was only one of many entrances to the Void Secret Realm.
Much like the Mysterious Emperor Secret Realm of the main universe, this Void Secret Realm likely had numerous entry points.
"Without this token, I wouldn't have been able to enter."
Lin Yuan thought to himself, "It seems that only those who have reached the fifth level of space-time fusion rules could force their way in without a token."
Lin Yuan was astonished.
"What level of mastery over the space-time fusion rules did the creator of this secret realm have? The sixth level? The domain of the strongest ones?"
Lin Yuan didn't dare underestimate this place.
While many secret realms were naturally formed, this Void Secret Realm had clearly been created through some deliberate design, given the presence of tokens that granted entry.
"Let's see what's inside."
Lin Yuan activated the scroll, and immediately a force from the depths of the void pulled him in.
If it had been his true body, Lin Yuan wouldn't have entered an unknown secret realm so easily. But since it was just the Yang Primordial Spirit, he could afford to take risks and experiment.
Buzz.
In the next moment.
Lin Yuan arrived in a vast space.
He couldn't see the boundaries in any direction, and dark mist occasionally drifted in the sky.
"So, this is the Void Secret Realm?"
Lin Yuan remained cautious and immediately hid within the depths of multiple layers of space.
The Void Secret Realm seemed like another version of the boundless void, with countless layers of space.
"Where are the Void Creatures?"
Lin Yuan scanned the area but saw no signs of any living creatures.
"I'll have to explore bit by bit."
Lin Yuan carefully chose a direction and ventured deeper.
The Void Secret Realm was too vast. Although Lin Yuan could traverse light-years in a single step when traveling, when searching for Void Creatures, he had to proceed gradually. If he crossed light-years too quickly, he might miss hidden Void Creatures along the way.
A month after Lin Yuan's Yang Primordial Spirit entered the Void Secret Realm.
Buzz.
Lin Yuan was moving quickly, but from the outside, there wasn't the slightest disturbance.
Yet, tens of thousands of miles away, a colossal creature was watching Lin Yuan from beneath a black mountain.
Though Lin Yuan's true form was hidden deep within layers of space, this massive creature could clearly sense the presence of those space layers and track Lin Yuan's location.
The giant creature slowly approached Lin Yuan.
"So, that's a Void Creature?"
While maintaining his movement, Lin Yuan had already sensed the creature approaching him.
With Lin Yuan's perception, even without actively projecting his world shadow, he could sense everything within tens of billions of miles as clearly as looking at the lines on his palm. There was no chance of being ambushed.
"It's quite different from the evil gods."
Lin Yuan thought to himself. The Void Creature he sensed felt like a wild beast—there was no sign of intelligence. Even the way it concealed its aura seemed purely instinctual.
The evil gods, on the other hand, though they sometimes went mad, still retained a certain level of reasoning.
"It's getting closer."
Moments later, the massive creature had approached within a hundred miles of Lin Yuan.
Suddenly.
The creature stopped moving, no longer drawing closer.
"Hm?"
Lin Yuan didn't strike immediately, wanting to observe what abilities this Void Creature had.
Buzz.
A phantom world descended, and Lin Yuan's mind was suddenly trapped in a series of layered illusions.
The scene before Lin Yuan's eyes was no longer the Void Secret Realm. Instead, he found himself in a grand palace, surrounded by beautiful women trying to seduce him.
"An illusion?"
Lin Yuan was unfazed. With his abilities, even without relying on any soul-defense treasures, he could easily resist such illusions.
"I surpassed a basic emotion like lust thousands of years ago. Break."
With a thought, Lin Yuan's mind formed a sharp blade that effortlessly tore through the illusion.
Meanwhile, the Void Creature had been preparing to strike, hoping to attack Lin Yuan before he could escape the illusion.
But Lin Yuan recovered far too quickly. Before the creature could move closer, the illusion had already been dispelled.
"If it only has illusion abilities, then it can stay here."
Having confirmed that this Void Creature posed no threat to him, Lin Yuan immediately made his move.
With a booming sound.
The vast power of his world surged forth, and the surrounding space twisted. The Void Creature had no time to react before it was captured in Lin Yuan's palm.
Though the creature was at least tens of miles long, under the crushing pressure of space, it had shrunk to a tiny size, struggling in Lin Yuan's hand.
"Hm?"
"I can't perform a soul search? No concrete memories?"
Lin Yuan tried to perform a soul search, but it was useless.
The mind of this Void Creature was as chaotic as that of a wild animal—it didn't even have the capacity to store specific memories.
"Might as well kill it."
After studying it for a while with no results, Lin Yuan decided to follow the instructions from the scroll and kill the creature.
Buzz.
The moment the Void Creature died.
Its body began to rapidly fade away.
"What's this?"
Lin Yuan frowned.
Upon death, the creature's body completely disappeared?
Not even its body was left behind?
Then what were the benefits of slaying Void Creatures?
Before Lin Yuan could ponder further, the now-fully-vanished Void Creature disintegrated into strands of energy that merged into Lin Yuan's body.
"Hm?"
Lin Yuan was about to use his world power to expel the mysterious energy. He wasn't going to absorb anything without first determining its purpose.
However, even the power of his world couldn't touch these strands of energy.
In an instant.
The strands of energy disappeared into Lin Yuan's body.
"Hmm?"
Lin Yuan sensed something strange.
"My mental willpower just increased—was it because of that Void Creature?"
Lin Yuan found it hard to believe.
There were only a few ways to increase mental willpower.
One way was through long periods of time, allowing it to grow slowly.
The second was through experiencing various forms of torment and suffering.
For example, when Lin Yuan had been studying the remains of a strongest one, he had endured an omnipresent pressure on his mental willpower, which had caused a slow increase.
However, this method of strengthening one's willpower became less effective the stronger one's willpower became.
But now?
Lin Yuan had just discovered that after slaying the Void Creature, his mental willpower had increased noticeably.
This was simply unbelievable.
The importance of mental willpower couldn't be overstated.
It was the core of the soul. The stronger the mental willpower, the greater its influence on all aspects of one's strength.
Moreover, to reach the ultimate realm, a powerful mental willpower was essential. Without it, one couldn't withstand the backlash from the river of time.
The most crucial point was that—
Unlike treasures in the material world.
An increase in mental willpower could be brought back to the main universe.
After all, Lin Yuan's primary form during his transmigration was his mental willpower, and when his journey ended, it would be his willpower that returned to the main universe.
Any improvements to his mental willpower during this time would be fully carried over.
In the depths of the Martial Hall in Azure World.
Lin Yuan, who had been meditating, suddenly opened his eyes.
"My mental willpower has indeed increased."
Lin Yuan's face showed a trace of astonishment. With the vast knowledge of human civilization from the main universe, he knew just how difficult it was to enhance mental willpower.
According to the experiences summarized by human civilization, when an eleventh-rank powerhouse sought to reach the ultimate realm, one of the key thresholds was mental willpower—a willpower index of at least ten million.
This was just the minimum threshold. The higher one's mental willpower, the greater the chances of achieving the ultimate realm.
Lin Yuan had been concerned about how to improve his own mental willpower.
Compared to the Divine King, who was a special being, Lin Yuan's biggest flaw was that he was too young. Having lived for too short a time, his mental willpower hadn't fully developed.
"A great opportunity."
"This Void Secret Realm is a tremendous opportunity for me."
Lin Yuan's eyes lit up with excitement.
"The main task of my Yang Primordial Spirit in the Void Secret Realm is to find and slay more Void Creatures to enhance my mental willpower."
Lin Yuan quickly made up his mind.
His true body would continue studying the World divine ability imprint, the space-time fusion rules, and other integrated laws.
Meanwhile, the Yang Primordial Spirit would focus entirely on hunting Void Creatures.
The Yin Primordial Spirit, while exploring the various worlds of the boundless void, would also work on comprehending more rules.
And so.
Time passed quickly.
In the blink of an eye, three hundred years had gone by. (Question: What's the age of the MC? :D )
...
20 chapters ahead on patreon: patreon.com/David_Lord
71