Yun Jin was waiting for the system to finish its refinement.
From Tian Po Sword's perspective, ever since Yun Jin obtained the Yin-Yang Codex, she had been sitting there dazed, her expression shifting constantly, troubled and restless.
Tian Po Sword grew tense as well.
"Sure enough, the Young Master must have encountered a great obstacle."
Carefully, he spoke, "Young Master, there is no need to be so anxious. For a scripture of this level, even taking a hundred years to step through its threshold would not be considered slow. You've only just begun. There is plenty of time to delve into it slowly."
Yun Jin waved her hand lightly. "It's nothing, no big problem."
She said it was no big problem, but how could Tian Po Sword believe her?
Watching Yun Jin lapse back into silence, he began to regret. Should he never have revealed this codex at all?
If the Young Master became trapped in its mysteries, delaying her cultivation, what then? Would that not make Tian Po Sword a sinner through the ages? His blade-body tightened with unease.
As Yun Jin remained absorbed in thought, he stood guard faithfully by her side.
Finally, Yun Jin stirred.
She gazed at the Yin-Yang Codex after refinement and could not help but marvel. The codex, as created by Wan Dao Saint, was already a masterpiece among Heaven-rank scriptures, filled with profound wonders.
But now—
Its grade had become three vast question marks. This scripture had transcended the very classification of Heaven-rank. It could no longer be judged by the standards of this world.
The refined Yin-Yang Codex had broken past the world's limits, something that could only be described as defying the heavens themselves.
Compared to its original form, the difference was immeasurable.
The gulf was greater than that between a low Yellow-rank manual and a high Heaven-rank one.
Yun Jin suddenly understood why the system demanded so much Emotional Value. Wan Dao Saint had created the codex from a flash of inspiration. Though brilliant, it remained incomplete. Yet the object that inspired him—the Yin-Yang Wheel—was of unimaginably high level.
This made the core of the codex incomparably strong.
And Yun Jin had commanded the system to make it perfect.
And the key lay in the word "perfect."
If what Wan Dao Saint had grasped before was just the surface of the Yin Yang Wheel, Then the improved Yin Yang Codex had touched its true core.
She had a premonition. If she kept cultivating, one day she would stand before the Yin Yang Wheel itself, sensing its true mysteries. At first, spending so much Emotional Value had stung a little. But now, she only felt one thing: it was worth it. Absolutely worth it.
Even without considering the future opportunities this codex might bring from its connection to the mysterious Yin Yang Wheel, its current power was already terrifying.
She estimated that once she perfected the first stage of cultivation, its effect would rival controlling an entire Primordial Force.
It might even surpass that.
This was a codex beyond Heaven rank!
Within it, she could faintly sense the essence of a Primordial Force. If she cultivated this codex to its limits, she might even control a top-tier Primordial Force. Her own intuition told her this Primordial Force would be at least as strong as the Five Elements Primordial Force, if not stronger.
The Five Elements Primordial Force was already a secondary Primordial Force.
Something stronger…
Could it possibly be a primary Primordial Force?
Yun Jin's eyes flickered with excitement. The last time she cleared the Trial Tower, it had listed five primary Primordial Forces:
"Primordial Life, Primordial Death, Primordial Silence, Primordial Control, Primordial Reincarnation."
None of these seemed to match the Yin Yang Codex.
Then, a shocking thought crossed her mind. Were the world's Primordial Forces naturally born?
No, that wasn't the case.
Take the Sword Primordial Force in the Three Thousand Worlds. Her Master, Ji Wusi, had mastered it. But there wasn't a sword when the world was first formed.
The Primordial Force of Sword was born as more people practiced swordsmanship. The world's spiritual energy gathered, and over a long time, it slowly formed.
The denser the sword energy in the world, the stronger the Sword Primordial Force became.
The stronger the Primordial Force, the stronger the sword cultivators.
It was a mutually reinforcing relationship.
That meant a Primordial Force could be generated over time.
So what about the Yin Yang Codex? Could it be hiding a newly born Primordial Force?
"Yin Yang Primordial Force?" Yun Jin muttered.
In the Three Thousand Worlds, more and more beings had begun recognizing the presence of Yin and Yang energy. Perhaps the world itself responded, giving birth to a new Primordial Force?
New Primordial Forces could have varying strengths. If her guess was correct, this Yin Yang Primordial Force…
It could be a new primary Primordial Force. At the very least, it was a secondary one.
Yun Jin was startled even by her own speculation. Could it really be possible?
If it was a newly born Primordial Force, and she became the first person to comprehend it…
The term flashed in her mind: Primordial Force Origin Master.
Across the long passage of time, the first person to master a Primordial Force became its master.
The more people cultivated it afterward, the stronger the master became. Take her cultivation of the Five Elements Primordial Force as an example.
In the distant Immortal and God Realms, there was surely an ancient being who first mastered it, becoming its master.
Even if Yun Jin mastered it herself, she couldn't challenge that being. Her mastery could never surpass the Primordial Force Origin Master; it would only make the master stronger.
Every existing Primordial Force already had its master by now.
But now…
Yun Jin's gaze burned with intensity.
Could she have a chance to become a Primordial Force Origin Master herself?
And if this Yin Yang Primordial Force was really a primary one…
Forget small worlds, even in the Immortal and God Realms, she'd have very few rivals. The only beings who could oppose her would be the masters of the other five primary Primordial Forces.
As for the two supreme Primordial Forces of Time and Space, their masters hadn't appeared yet, so she didn't have to worry about them for now.
Yun Jin took a deep breath.
She never expected that this Yin Yang Codex would give her such a monumental surprise.
The Yin Yang Primordial Force hinted at in the codex was just the surface. But after the system perfected it, she was now seeing the true core. If she could reach the third stage of cultivation, she'd be very close to mastering the Yin Yang Primordial Force.
Once she controlled it, she could promote Yin Yang cultivation techniques throughout the Three Thousand Worlds, getting more and more people to practice them.
The more people cultivated, the stronger she would become.
Eventually, she'd become a truly supreme existence.
"Young Master, maybe we should—" Tian Po Sword saw Yun Jin's shifting expression and couldn't help but try to comfort her again.
"Tian Po, Wan Dao Saint was truly a genius," Yun Jin suddenly said.
Even though the Saint's version of the Yin-Yang Codex had only touched upon the barest surface, even that glimpse held immense significance for the birth of the Yin Yang Primordial Force.
Without that fragment, she would never have obtained the complete version at all.