For Golden Core cultivators, ordinary Spirit Stones are no longer of much reference value.
Golden Core cultivators basically engage in barter, dealing in amounts of Spirit Stones that can easily reach millions.
In addition, there is a unique currency used in transactions among Golden Core cultivators, called "Gold-Attribute Stone."
This is a unique Heaven-Earth Spirit Stone, not inherently divine, but of special construction that can be refined to store the Gold-Attribute Magical Power of Golden Core cultivators.
Any Gold-Attribute Magical Power from a Golden Core cultivator that is injected into it will be refined, turning into an ownerless resource, which can afterwards be absorbed by any Golden Core cultivator.
However, this Gold-Attribute Magical Power cannot augment cultivation, it can only be used to replenish mana.
To put it simply, this "Gold-Attribute Stone" is like a "power bank" during magical combat for Golden Core cultivators.
Every time a "Gold-Attribute Stone" is made, it requires a single thread of a Golden Core cultivator’s Gold-Attribute Magical Power.
This thread of magical power takes at least half a year to cultivate and recover.
Thus, creating this stone is laborious and unrewarding, significantly affecting cultivation.
Nonetheless, having this stone during magical combat indeed provides a bit more security, maintaining its stable value.
Over time, it gradually turned into a form of currency that everyone grudgingly accepts.
Some financially poor Golden Core cultivators would inject their painstakingly cultivated mana into it, creating these stones to purchase treasures.
For the sake of acquiring this pool of Golden Bone Thunder Liquid, Gu Yuan spent most of the gifts he received during the Golden Core Ceremony.
But as long as the scripture can be cultivated successfully, everything would be worth it.
"Boom!"
As the Grand Array continuously summoned thunder, Purple Sun Peak had already turned into a land of thunderstorms.
Countless electric lights flickered incessantly, like thundering serpents circling the peak, hissing endlessly.
"Almost there..."
Feeling the intensity of the Thunder Element Power at the peak, Gu Yuan closed his eyes and sank his thoughts into his Dantian.
"Boom!"
With the urging of his thoughts, the always silent Golden Core in his Dantian suddenly began to spin along his body’s meridians.
Initially, the rotation path of the Golden Core was slight and mild, seemingly following the operational path of the Three Dharma Celestial Human Diagram.
As time passed, the rotation path of the Golden Core became increasingly grand, like thundering claps, blasting open all of Gu Yuan’s apertures.
What’s more, all of Gu Yuan’s bones began to tremble under the influence of the Golden Core.
Golden Bone Thunder Aperture!
The semi-formed Dao Body that Gu Yuan previously did not know how to utilize, suddenly trembled, with inexplicable electric lights emerging from the bones and apertures.
"Boom!"
Furthermore, the spinning speed of Gu Yuan’s Golden Core almost reached its limit, akin to a star rotating within him, with surging magical power stirring all of creation.
He seemed to transform into a black hole, drawing countless electric lights from Purple Sun Peak into his body in a frenzy.
"Boom!"
The lightning surged, entering apertures and tempering bones.
The Golden Thunder Bone Liquid also began to pour into his body frantically, rapidly enhancing Gu Yuan’s mana and physical body.
Furthermore, above his Golden Core, a vague shadow slowly emerged.
"Boom!"
Amid the roaring sound, countless thunders continuously flooded in, as the shadow grew more brilliant, yet its true face remained unclear, just hidden within Gu Yuan’s Golden Core, alternately appearing and disappearing.
Celestial City Thunder Spirit!
If Gu Yuan could cultivate to the Late Stage Golden Core with perfect magical power, he could fully gather the Yuandu Thunder Spirit, briefly manifesting an anomaly with power to destroy heaven and earth.
However, at the moment, he was still far from that.
But once the Yuandu Thunder Spirit is formed, it signifies the success in cultivating this scripture.
"Boom!"
The golden array patterns continuously flickered, with countless spiritual energy surging up, drawing the power of thunder and lightning between heaven and earth to the top of Purple Sun Peak.
The lightning was so intense it almost seemed to be dripping.
But the immense boost from practicing the mysterious techniques for the first time made Gu Yuan accept everything without refusal, like a black hole abyss, desperately absorbing all.
One thread!
Two threads!
Ten threads!
Thirty threads!
In just half a day, Gu Yuan’s Gold-Attribute Magical Power had already condensed thirty threads, increasing his power by thirty percent compared to just after his breakthrough.
A long time later.