The sword momentum took form in the sky, presenting the shape of the Nirvana Sword, lingering for a long time. The aura that proclaimed the majesty of the heavens made everyone in the manor lower their heads in submission.

"What a fine sword!"

Qing Yu contentedly sheathed the Nirvana Sword, feeling the pulse of the Qi mechanism within the sword, filled with emotions.

The Nirvana Sword is a rare Divine Sword. With the assistance of this sword, Qing Yu could even feel his Sword Dao advance to another realm, touching the threshold of the Tenth Sword: Heavenly Burial.

It must be said, the system always manages to provide unexpected surprises. The compatibility between the Nirvana Sword and Qing Yu is extraordinarily high.

"Indeed, the system is entirely different from those flamboyant traps that exploit their hosts," Qing Yu thought with sentiment.

"Knock knock—"

"Master, may this disciple enter?"

At that moment, Xiao Qiye's voice came from outside the door.

"Come in." Qing Yu seated himself in the Taishi Chair, with the Nirvana Sword laid across his lap.

Xiao Qiye pushed the door open and slowly closed it behind him, bowing to Qing Yu, saying, "Greetings, Master."

His gaze involuntarily shifted to the Nirvana Sword on Qing Yu's lap. Understandably so, as the sword was exceedingly remarkable, and because its Qi mechanism was still connected to Qing Yu, it exuded a divine aura that compelled one to admire it with a reverent gaze.

However, Xiao Qiye was ultimately an expert of the True Pill Realm. He quickly restrained his gaze and respectfully said, "Master, Qi Ye has already mastered the path of the Demon Sword. Please grant the demon blood."

Demon blood is the core method for cultivating the Demon Sword. Without demon blood, the so-called Demon Sword loses its essential core.

Only by refining demon blood can the intent of the Demon Sword truly be born, thereby truly leading the cultivator into the Demon Path.

"Oh?" Qing Yu's eyes flashed with divine light, the Heavenly Son's Qi Observation Skill activated, taking in all of Xiao Qiye's circumstances.

"Your Demon Heart indeed aids your cultivation of the Demon Sword; in just a few days, you've trained the sword path deep into your marrow. You are truly a sprouting seed on the Demon Path," Qing Yu praised.

The Demon Sword evolved from the Demon Saber; even just the sword path is filled with the madness and slaughter of the Demon Path. Xiao Qiye had silently practiced the sword path to this level, likely due to the effects of his past experiences.

Enduring hatred and killing intent under one's enemies' eyes for so many years, one either becomes a lunatic or a neurotic madman.

Seems like Xiao Qiye is the latter.

This is a good thing, an immensely good thing. It signifies Xiao Qiye's ability to rapidly progress in the cultivation of the Demon Sword, and it also confirms Qing Yu's conjecture quickly.

With a whisk of pure air, Qing Yu suddenly appeared before Xiao Qiye, a finger with a wound placed on his forehead, "Focus your mind and perceive the spell."

Xiao Qiye felt a clarity in his mind, a stream of tranquility flowing from his brow spreading throughout his body. Simultaneously, a twisted sequence of black characters appeared in his mind, resonating within, filled with intense Demon Intent.

'This is…'

Xiao Qiye felt that the spell had a somewhat related aspect to the previous Demon Sword Qi Manipulation Method, but much deeper.

According to the Demon Sword's record, one should exchange blood for blood, allowing demon blood to permeate one's blood vessels, thus making the blood easier to become demon blood.

But this spell not only enables the ease of demon blood but also includes subsequent methods. From blood to body, transforming all meridians and flesh, achieving a completely new Demon Body.

This is the supreme Body Refinement Method; Xiao Qiye has never seen such profound body refining technique.

Unknowingly, Xiao Qiye had already sat cross-legged, the blood-red dot between his brows splitting into countless threads, spreading across his face, extending throughout his body.

"Looks like it will succeed." Qing Yu's eyes shimmered with divine light, illuminating Xiao Qiye's entire inner body. Once he saw the demon blood beginning to take effect, he slowly withdrew his finger.

The original version of the Demon Saber, from which the Demon Sword originates, requires one to use the most vicious toxins to refine demon blood to replace one's own blood. However, Qing Yu's Saint and Demon Embryo is itself the ultimate of the Demon Path, naturally eliminating the need for such troubles.

Once demon blood is planted, the life and death of the recipient are entirely controlled by Qing Yu, even their thoughts would become loyal.

Moreover, the Body Refining Spell Qing Yu passed on to Xiao Qiye is derived from the Yin Yang Two Extremes Demon Path within the Heavenly Demon Technique, improved by Qing Yu himself.

The Heavenly Demon Technique was created by the Great Heavenly Demon to sculpt a suitable vessel for hosting. It can transform a human body into a Demon Body. Qing Yu had no intention of creating a host; his objective was to allow the cultivator to achieve a different kind of Demon Body.

Or rather, to transform the cultivator into another creature, a being that is both similar and dissimilar to humanity—a Demon Race.

To be precise, an Otherworldly Demon Clan.

The Saint and Demon Embryo can be said to possess the most supreme bloodline among the Otherworldly Demon Clan, Qing Yu used the Saint and Demon Embryo's blood as a guide to mold the cultivator into the current Otherworldly Demon Clan.

This way, not only could Qing Yu's subordinates see a significant increase in strength, but if they were to die in battle, the essence blood they leave behind would be quite useful.

Qing Yu never forgot the label of "very capable fighters" in the System Mall for the War Beast Sky Slaughter. The War Beast Sky Slaughter is priced at two hundred thousand Villain Points, but the price can be reduced through demon race essence blood.

Currently known, one True Core Realm demon race essence blood can reduce five thousand Villain Points. Thus, if Qing Yu cultivates forty True Core Realm demon race martial artists, their essence blood can be offered to summon the War Beast Sky Slaughter.

Forty True Core Realm martial artists sound difficult, but it's still not as hard as acquiring two hundred thousand Villain Points. If Qing Yu had two hundred thousand Villain Points, why bother with the War Beast Sky Slaughter? Just twenty high-level draws would make him a Supreme Being.

As it stands, whether Qing Yu can summon the War Beast Sky Slaughter as both a fighter and pet depend entirely on the reliability of this developed Body Refining Demon Technique.

Time flowed in the eager watchful eyes of Qing Yu, as the blood threads within Xiao Qiye gradually receded under his skin, waking him from deep cultivation.

The moment he paused his cultivation, Qing Yu sensed a somewhat familiar aura, realizing his concept had succeeded, Xiao Qiye successfully stepped onto the path of transforming into a Demon Body.

Although the aura was weak, the familiar Qi mechanism highly resembled the blood aura that Qing Yu had previously obtained from Bai Jiangshan's Character Card.

'Succeeded in the first step, now it's a matter of evaluating universality,' Qing Yu thought.

Transforming into a Demon Body is never a straightforward process. Cultivators of the Heavenly Demon Technique, if lacking in talent or foundation, would deviate and die from madness. For those practicing this Body Refining Demon Technique, if they cannot assimilate demon blood, they won't escape death.

What Qing Yu could do was, while ensuring the purity of demon blood remains intact, strive to make the technique suitable for most people. It would be a long and cruel process, for any technique to form requires experimental subjects.

However, what Qing Yu lacks the least among his subordinates are these cannon fodder.

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