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 Wandao 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. Wandao 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.
That word—perfect—was the key.
If Wandao Saint had only grasped the surface of the Yin-Yang Wheel, then the refined version touched its very core. A premonition rose in Yun Jin's heart: if she cultivated this path to its end, one day she would stand before the Yin-Yang Wheel itself and glimpse its true mysteries.
At first, she had felt heartache at spending so much Emotional Value. Now, she felt only one thing—it was worth it. Worth everything. Leaving aside the codex's possible link to the mysterious Yin-Yang Wheel, even in its present state, its might was terrifying.
She estimated that once she mastered the first tier, its effect would rival the control of a Law itself—perhaps even surpass it.
This was a scripture beyond Heaven-rank.
And within it faintly resided the shadow of a Law.
If she could cultivate it to its peak, she might even grasp a supreme Law through it.
Her instincts told her this Law would not be weaker than the Five Elements Law—perhaps even stronger.
The Five Elements Law was already a second-grade Law.
Something stronger… could it be a first-grade Law?
Yun Jin's gaze grew bright.
The last time she cleared the Trial Tower, it had listed five first-grade Laws:
The Law of Life.
The Law of Death.
The Law of Extinction.
The Law of Dominion.
The Law of Reincarnation.
Among them, none seemed to match the attributes of the Yin-Yang Codex. But then, a shocking thought flashed through her mind. Were the Laws of this world always present from the very beginning?
No. That could not be.
For example, in the Three Thousand Worlds, there now existed a Law of the Sword. Her master Ji Wusi had grasped this Law.
Yet surely when heaven and earth were first born, there were no swords.
The Law of the Sword was born only because countless cultivators practiced swordsmanship. Over long ages, the world's spiritual energy gathered, and gradually a Law emerged.
The stronger the sword aura of the world, the stronger the Sword Law became. And the stronger the Sword Law grew, the more powerful sword cultivators became.
They nourished each other.
This meant…
Laws could be born after creation.
Then what about this Yin-Yang Codex?
Could it be carrying the seed of a newborn Law?
"The Law of Yin and Yang?" Yun Jin murmured.
In countless small worlds, discussions of Yin and Yang had become more and more frequent. More and more living beings had come to sense the existence of Yin-Yang energies. If heaven and earth responded, could it give rise to a new Law?
Newborn Laws too had levels of strength. If her guess was correct, the Law of Yin and Yang… could very well be a first-grade Law! At the very least, a second-grade Law.
Yun Jin was startled by her own speculation.
Was such a thing possible?
If this truly was a newborn Law, and she became the first to comprehend it…
A title surfaced in her mind: Law Sovereign.
Throughout endless years, the very first person to master a Law became its Law Sovereign.
As more cultivators pursued that Law, the Law Sovereign's power would grow ever greater.
For example, with the Five Elements Law, somewhere in the distant Immortal or Divine Realms, there must exist an ancient figure—the first who grasped the Five Elements Law—its Sovereign.
Even if Yun Jin herself mastered the Five Elements Law, before that Sovereign she would have no power to resist. Her mastery would only feed into the Sovereign, making them even stronger.
Since the birth of the universe, unfathomable time had passed. Every Law already had its Sovereign.
But now…
Yun Jin's eyes burned with heat.
Could she have the chance to become a Law Sovereign herself?
And not of an ordinary Law, but of a first-grade Law!
If that were true, she would not just be unmatched in small worlds. Even in the Immortal and Divine Realms, few could contend against her. Only the Sovereigns of the other five first-grade Laws could stand in opposition. As for the two supreme Laws of Time and Space, their Sovereigns had never yet appeared. For now, they need not be considered.
Yun Jin drew a long breath.
She had never expected the Yin-Yang Codex to bring her such a revelation. Though the codex had only brushed against the Yin-Yang Law before, after the system's refinement, it had pierced directly to its heart. If she cultivated it to the third tier, she would stand close to mastering the Law of Yin and Yang.
And once she did, she would spread Yin-Yang scriptures across the Three Thousand Small Worlds, guiding more and more beings to practice them.
The more cultivators followed, the stronger she would become. Until the end, when she would stand as the supreme existence.
"Young Master, perhaps it would be better if we—" Tian Po Sword saw Yun Jin's shifting expressions and could not help but speak up again.
"Tian Po, Wandao Saint truly was 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 Law.
Without that fragment, she would never have obtained the complete version at all.