Chapter 1516 : The Limitless Rule's Ascent

This was not the most critical point. Eldrin Chen's Primordial One Limitless Rule was not far from reaching its Great Perfection stage.

By his estimation, once he made that breakthrough, even if the Primordial One Limitless Rule could not compare to the Primordial Unity Path Principle Power, it would still likely undergo a tremendous enhancement.

Furthermore, bolstered by the Great Perfection Primordial One Limitless Rule, the Returning Abyss World would grow once more, its World's Origin [the foundational essence of a world] would receive a significant boost, and the Heaven Earth Profound Yellow [a supreme spiritual energy of heaven and earth] it condensed would also be vastly improved.

"My combat power has finally increased by another measure," he murmured to himself.

Eldrin Chen spoke softly. Setting aside future matters for now, his recent breakthrough to the Late Stage Earth Immortal realm had granted him a palpable sense of his spiritual power surging to new heights.

This breakthrough had not only increased his spiritual power by more than half, but the power of his World's Origin [the foundational essence of a world] had undergone a qualitative transformation, further augmenting his overall combat prowess.

Although, because his Primordial One Limitless Rule had not yet reached Great Perfection, it still fell short of his Primordial One Indestructibility Body [a supreme physical cultivation constitution], when used to fuel his Divine Ability [a supreme supernatural power] and the Ancient Crimson Dragon Cauldron [an ancient magical cauldron artifact], the unleashed might was nearly on par with that of the Primordial One Indestructibility Body.

With this thought, Eldrin Chen sank his consciousness into his Earth Immortal World [the inner world cultivated by an Earth Immortal].

Within his Earth Immortal World, beyond the bounds of the endless earth and sky, a vast and boundless starry expanse had been fully opened.

This starry realm was immeasurably vast. Countless streams of void energy manifested, giving birth to a multitude of Stellar [celestial bodies like stars and planets].

However, this process was not swift. Eldrin Chen estimated that filling this expanse of starry sky would require at least several million years.

With this thought, Eldrin Chen retrieved an ancient vial from his sleeve. Sealed within it was the Stellar [the fundamental essence of stars] he had nurtured for many years.

He poured all of this Stellar into the Earth Immortal World [a world cultivated to the Earth Immortal realm]. Instantly, the Outer Starry Sky [the celestial void surrounding a world] was enveloped by countless glittering stars.

"Adding the thirty million previously refined, that makes a total of fifty million stellar bodies."

"Though it has not yet reached its absolute limit, it is close."

When nearly half of the Returning Abyss Great World's Outer Starry Sky was filled, Eldrin Chen finally allowed himself a slow, relieved sigh.

These Ancient Star [primordial stars of immense power] were vast and boundless. Having been cast into the Returning Abyss Great World, they were now gradually being refined and integrated.

According to Eldrin Chen's calculations, to cultivate to the Earth Immortal Great Perfection [the pinnacle of the Earth Immortal realm], he would need to refine approximately three hundred and ninety million of these celestial Ancient Star for the outer cosmos to reach its ultimate capacity.

By that time, the Heaven and Earth Primordial Energy [the foundational spiritual energy of heaven and earth] within the Returning Abyss Realm would surge by another eighty percent.

Of course, with the Returning Abyss Great World now possessing an expanded Outer Starry Sky, it would later require the condensation of stellar origin forces. The time needed for his cultivation to advance further would become even more protracted.

Generally speaking, an Early-stage Earth Immortal who has opened a Sixfold Heaven [an Earth Immortal's internal world with six layers of heavens], with ample Immortal Source [the foundational energy source of an immortal] and Immortal Spirit Essence [the purified spiritual energy used by immortals for cultivation], would require roughly two hundred thousand years of arduous cultivation to advance a single level in their cultivation base.

For a Late Stage Earth Immortal, whose internal world is several times vaster than that of an Early-stage Earth Immortal and who has also opened an Outer Starry Sky [the celestial expanse beyond the primary heavens of an Earth Immortal's world], the speed of cultivation is significantly reduced.

It is widely acknowledged that a Late Stage Earth Immortal with a Sixfold Heaven, even with all necessary resources, would need at least five hundred thousand years to increase their cultivation by one level.

Eldrin Chen had opened a Thirteenfold Heaven [an Earth Immortal's internal world with thirteen layers of heavens]. Without relying on external aids, relying solely on the Immortal Spirit Essence provided by his Blessed Land [a land imbued with potent spiritual energy] and the assistance of over a dozen Imperial Lord [a high-ranking immortal lord] in operating his foundational treasures, it would likely take him nearly a million years to advance a single level.

Fortunately, within his Earth Immortal World [the personal world cultivated by an Earth Immortal], thirteen low-grade World-Opening Spiritual Root [a spiritual root that aids in stabilizing and expanding a cultivator's internal world] absorbed energy from the void, converting it into Heaven and Earth Primordial Energy [the primordial energy of creation] to accelerate his cultivation, shortening this timeframe to approximately six hundred thousand years.

On top of this foundation, with the aid of spiritual treasures like the Immortal Peach Tree [a mythical tree bearing peaches that grant longevity] and a substantial supply of Galaxy Star Sand Pill [an elixir refined from the essence of stars and galactic sand], he estimated it would take three hundred thousand years to gain one level.

"With my current cultivation base, for my Earth Immortal World to advance one level, it would require consuming at least thirty-six vials of Galaxy Star Sand Pill,"

"An increase of more than double compared to the Middle Stage Earth Immortal realm."

Eldrin Chen murmured softly, a faint sigh escaping his heart.

His Earth Immortal World was excessively vast, granting him a reservoir of spiritual power more than twice as profound as a typical seventh-level Earth Immortal, but it also demanded an even more colossal consumption of resources.

Without the harvests from the Netherworld and the Solar Realm Small Universe, his cultivation speed at the Late Stage Earth Immortal realm would undoubtedly have slowed considerably.

Furthermore, the Chen Clan has nine individuals on the cusp of stepping into the Late Stage Earth Immortal realm. Relying solely on the resources of the 'Hundred Seas of Returning Abyss'—that is, the Flowing Stream Hundred Seas—

would likely be far from sufficient to nurture all nine of these top-tier prodigies to Earth Immortal Great Perfection within five hundred thousand years.

"This expedition to the Solar Realm Small Universe represents the greatest Opportunity and Fortune for the rise of our Chen Clan,"

"We must secure a bountiful harvest and ensure everyone returns alive."

Contemplating this, Eldrin Chen immediately emerged from his Seclusion Chamber.

He did not leave the Returning Abyss Realm immediately. Instead, he retrieved from his sleeve a piece of crimson-hued ancient iron, drawing it forth slowly.

This metal was known as Crimson Firmament Ancient Iron, a supreme treasure of the Flowing Fire Star Palace. Within it was contained a trace of Primordial Unity Path Patterns, making it the finest material for forging a Lifebound Immortal Treasure.

Eldrin Chen intended to fuse it into his Solar Fire Returning Abyss Sword, thereby enhancing the sword's power.

The Crimson Firmament Ancient Iron was an Eighth Rank Supreme Grade ancient metal, indestructible and impervious to myriad tribulations. Refining it would be no simple task.

If Eldrin Chen were to refine it himself using the Primordial One Primordial Solar Heavenly Flame [the supreme flame born from the primordial chaos and the essence of the sun], it would take him no less than eight thousand years to accomplish the task.

Fortunately, this Flowing Fire Blessed Land was a peak-grade Fire Vein Blessed Land [a land of profound spiritual fortune]. Its earth-fire energy was potent enough to melt any World-Opening Marvel [a treasure of immense rarity and power, often used in the creation of worlds]. With the earth-fire of this place empowering his Primordial Solar Heavenly Flame, Eldrin Chen's refining speed increased by more than tenfold.

In just under a thousand years, he had completely melted down the Crimson Firmament Ancient Iron [an ancient, supremely hard metal imbued with the essence of the crimson sky], transforming it into a mass of pure, refined liquid essence.

He then infused this liquid essence into the Solar Fire Returning Abyss Sword, instantly making the sword's body even more indestructible.

Once the sword body was successfully refined, Eldrin Chen opened his mouth and exhaled a wisp of Primordial Chaos Violet Aura [a supreme energy born from the primordial chaos, possessing miraculous properties].

Cultivated to this day, his Primordial Chaos Violet Aura had grown increasingly wondrous. Depending on the amount of Violet Aura consumed, he had now condensed it into three distinct grades.

Eldrin Chen named these three grades of Primordial Chaos Violet Aura: the Primordial Source Violet Aura [the most foundational and purest form], the Acquired Primordial Chaos Violet Aura [a more potent, refined grade], and the Acquired Primordial Chaos Source Essence [the most concentrated and powerful essence].

The Primordial Source Violet Aura was the most original form of Primordial Chaos Violet Aura. Eldrin Chen could refine a single wisp of it in just ten years.

Although this aura was still incredibly versatile, it was too thin and weak, offering little practical use for an Immortal [a being who has transcended mortality and ascended to immortality].

The Acquired Primordial Chaos Violet Aura, however, was extraordinarily potent. It was condensed from forty-nine wisps of Primordial Source Violet Aura, and it took Eldrin Chen roughly five hundred years to refine a single wisp of this higher grade.

This energy [the vital force that flows through all things] possesses a subtlety and refinement surpassing even that of the World-Opening Energy [a primordial energy capable of initiating the creation of worlds]. It can aid a Spiritual Root [the innate foundation that determines a cultivator's potential] in shattering its shackles and ascending to the World-Opening Realm [a legendary cultivation stage where one gains the power to shape nascent realities]. However, its potency is considerably more diluted.

Therefore, ten strands of Acquired Primordial Chaos Violet Aura [a sublime, post-celestial energy born from the primal chaos] are required to elevate a single Spiritual Root into a World-Opening Spiritual Root [a supreme spiritual foundation granting world-creating potential].

Later, Eldrin Chen discovered a method to drastically reduce the consumption of Acquired Primordial Chaos Violet Aura. By using a small amount of it, supplemented with World-Opening Energy, he successfully catalyzed the ascension of a Spiritual Root to the World-Opening Spiritual Root level.

As for the 'Acquired Primordial Chaos Source Essence' [the ultimate condensation of post-celestial chaos energy], it is formed by the coalescence of thirty-six strands of Acquired Primordial Chaos Violet Aura. For Eldrin Chen, condensing a single strand required an expenditure of time approaching twenty thousand years.

This Acquired Primordial Chaos Source Essence represents the pinnacle of Post-Heaven [the state of existence after the formation of heaven and earth, as opposed to the primordial Pre-Heaven state] materials. Its wondrous applications are a hundredfold more potent than those of the Acquired Primordial Chaos Violet Aura.