"Counting the time, there’s less than a month left until the Outer Sect’s training period."

"I must expedite retrieving the Profound Yin Cold Marrow Stone and then enter closed-door practice to consume the Vascular Formation and Meridian Opening Elixir."

"If I can save a few days, I’ll go snatch the Stone Orbs."

Now with two of the three major tasks completed, Liou Yuan decided to enter closed-door practice to consume the elixir after retrieving the Profound Yin Cold Marrow Stone.

Then, he’ll plunder other disciples’ Stone Orbs to advance in the rankings.

"Fellow disciples, your time is running out."

In the ground fissure, Liou Yuan let out a sinister smile and activated the Treading Flowing Waves technique to shoot deeper into the canyon.

Half a day later, Liou Yuan returned.

Without the Purifying Dark Demon’s guardianship, retrieving the Profound Yin Cold Marrow Stone was naturally unimpeded for Liou Yuan.

He returned without any delay the moment he acquired the Spiritual Object.

Before he even caught his breath, he couldn’t wait to take out the Profound Yin Cold Marrow Stone.

The Profound Yin Cold Marrow Stone was as large as Liou Yuan’s head.

Its stone texture was like icy jade, and the chilling sensation seeped into the palm, climbing along the meridians as if intending to freeze one’s vitality.

Even as a Body Cultivator, Liou Yuan could barely withstand the cold, shivering several times.

Fortunately, possessing the Blood Absorption Skill, Liou Yuan’s blood energy surged, forming a glove-like shape to envelop his hand, isolating the yin cold energy to prevent injury.

Inside the Profound Yin Cold Marrow Stone, a ghostly blue light flowed like a living creature, slowly weaving through it.

The stone’s surface was covered in fine patterns, resembling ancient runes or marks engraved by time, appearing and disappearing under the blue glow.

"A treasure, definitely a treasure!" Liou Yuan kept muttering about the treasure.

Impatiently, he scanned it with the Fixed Star Compass, revealing the information of the Profound Yin Cold Marrow Stone.

[Name] Profound Yin Cold Marrow Stone

[Category] Celestial Spiritual Object

[Quality] Second Grade Supreme

[Effect] In the deep earth veins, yin and cold energy surges upward. Under celestial influence, the moon essence Qi drifts like invisible threads, drawn by the earth vein’s gravity, cascading down. These forces, both absolutely yin and cold, meet and merge in this unique place.

Through countless years of catalysis, the Profound Yin Cold Marrow Stone was formed. Imbued with endless cold force, its brilliance a captivating blue.

For cultivators practicing Yin Attribute Cultivation Skills or with Yin Star Acupoints, this stone is an exceptional cultivation aid. Placed in the cultivation spot, the Cold Marrow Stone constantly releases rich yin cold Spiritual Qi, harmonizing with the cultivator’s skill, doubling the speed of Spiritual Qi absorption and conversion, markedly increasing cultivation efficiency. Yearlong cultivation with it allows the cultivator to attain a state of cold detachment, undisturbed by external influences, making magic practice more effective.

"Second Grade Supreme!" Liou Yuan whispered the stone’s grade.

The quality of a Spiritual Object of First Grade corresponds to the Qi Cultivation Realm.

Second Grade naturally corresponds to the Foundation Establishment Realm.

The Purifying Nether Stone Marrow is a Second Grade Low; equal to an early-stage Foundation Establishment Spiritual Object.

This Profound Yin Cold Marrow Stone is Second Grade Supreme, theoretically equivalent to the peak of Foundation Establishment.

Indeed, its effectiveness is worthy of its grade.

To Liou Yuan, its effectiveness, in some aspects, exceeds its grade.

"It can increase cultivation speed."

"Magic practice can be twice as effective with half the effort."

Watching the determination results from the Fixed Star Compass, Liou Yuan’s breath flared with heat.

According to the Fixed Star Compass, doubling the speed of Spiritual Qi absorption and conversion equates to speeding up cultivation, doesn’t it?

Of course, for the Profound Yin Cold Marrow Stone to enhance cultivation speed, it presupposes that the cultivator practices Yin Cultivation Skill or possesses Yin Star Acupoints.

Classified under the Great Five Elements Star Acupoints, Gold and Water Acupoints are precisely yin.

While Wood and Fire are yang.

Earth doesn’t have yin or yang differentiation.

The Cliffs Elder once said, the four seasons, Spring, Summer, Autumn, and Winter, represent the four elements: Gold, Wood, Water, and Fire.

Earth resides yearlong, bearing and containing everything, independent of yin and yang.

Its yin-yang attribute is determined by the cultivator’s cultivation technique.

In summary, this Profound Yin Cold Marrow Stone precisely matches Liou Yuan’s Star Acupoints.

"Heaven surely favors those who fulfill their potential," Liou Yuan thought with a smirk.

Currently, possessing a Five-Star Water Acupoint and Four-Star Gold Acupoint, Liou Yuan’s cultivation speed is already unrivaled in the Outer Sect.

With the further aid of this Profound Yin Cold Marrow Stone, he dare not imagine how fast his cultivation could be.

"Could I rival Tuoba Xin?"

A bold idea arose in Liou Yuan’s mind.

Of course, this requires conclusive evidence post-cultivation aided by the Profound Yin Cold Marrow Stone.

"Six-Star Star Acupoint is too formidable; even with help from the Profound Yin Cold Marrow Stone, it might not be enough to catch up."

"Even if I can’t catch up, I can get infinitely close."

Liou Yuan vowed, feeling that his Qi Cultivation Eighth Layer, or every checkpoint within the Qi Cultivation Realm, seemed insignificant at that moment.

The other functionality of this Profound Yin Cold Marrow Stone proves crucial as well.

It can make the cultivation of magic twice as efficient with half the effort.

Of all the magic Liou Yuan currently possesses, only the Lion’s Roar Spell has reached the Great Achievement Realm; commonly used Treading Flowing Waves, Green Tide Pure Water Sword, Blood Imperial Spell, and Celestial Calculation Skill for Taming Objects are still far from completion.

When cultivating these techniques, Liou Yuan often felt distracted and inept.

He wished he could split himself in half to manage.

The presence of the Profound Yin Cold Marrow Stone perfectly solves Liou Yuan’s troubles.

"How is this Profound Yin Cold Marrow Stone merely a Second Grade Spiritual Object? Categorizing it as Third Grade wouldn’t be impossible," said Liou Yuan, lightly brushing his blood-wrapped hand over the Profound Yin Cold Marrow Stone, as if cradling a rare diluted treasure.