Starting with the consumables of the Demonic Sect, one can barely achieve immortality.

The second floor of the Hall of Longevity is the dormitory for registered disciples.

In the empty, dark room, Yan Cheng sat cross-legged in the coffin, concentrating on his breathing.

After a long while, he opened his eyes, and in the silence, two dark purple stars seemed to shine.

Corpse cultivators, being dead bodies with decayed internal organs, naturally have a much lower cultivation efficiency than living cultivators.

Yan Cheng's cultivation of the "Upper Yin Heaven Corpse Dao Chapter" was incredibly profound, yet it still took him nearly ten days to refine a wisp of star energy.

If even he was in the same boat, one can imagine the predicament of those who practiced the commonplace "Yin Shi Xing Sha Jue".

To open the three Qi Palaces and achieve the initial stage of Qi Refining perfection, one needs to refine a full forty-nine strands of star Qi!

The "Gathering Yin and Condensing Evil Qi Technique" can greatly improve the efficiency of corpse cultivators in developing Yin Corpse Evil.

"Without this technique, even if nine out of ten corpse cultivators cultivate for three to five years, they still wouldn't reach the mid-stage of Qi Refining."

"But how could the incantation provided by that treacherous Huang Tong not contain a trap!"

Yan Cheng's eyes, brimming with starlight and purple light, grew even colder:

"This technique uses cultivators as the cauldron and malevolent energy as the elixir, essentially pushing corpse cultivators onto an assembly line, turning them into consumables for mass-producing Yin Corpse Malevolent Energy."

However, the higher the efficiency of cultivating malevolent energy, the faster the yin energy accumulates within the body.

"If this cultivation continues, the yang fire within my body will eventually devour countless hearts and livers of its own kind, and I will be unable to suppress it!"

"Unless one cultivates to the point where yin energy completely overwhelms yang energy... but what difference is there between that and being completely dead? It would just become resources for the high-level cultivators in the hall!"

The "Chapter on the Corpse Path of the Upper Yin Heaven" clearly states that no matter how deep the cultivation of a Yin Corpse is, it cannot attain the Great Dao of Immortality, and its life will eventually be worn away by the passage of time.

To truly be reborn, one must establish a foundation for immortality and become a Foundation Establishment cultivator.

Foundation Establishment cultivators refine their essence into Qi, achieving spiritual fulfillment and mental satisfaction. Their entire life is entrusted to the Immortal Foundation, allowing them to pursue the Great Dao. Their physical bodies are no longer subject to the distinction between Yin and Yang, life and death.

Only when one reaches this stage can one truly break free from the body of the dead, be reborn, and no longer be restrained by the Soul-Capturing Bell in Huang Tong's hand.

Otherwise, he would be nothing more than a consumable for Huang Tong to refine evil energy!

Thinking of this, Yan Cheng glanced at the original owner of this dormitory, the headless female corpse who was now lying quietly in the coffin in the corner.

Since they didn't cultivate the "Yin Corpse Walking Evil Technique," they couldn't refine the Yin Corpse Evil. For the time being, they could only extract the few wisps of evil energy remaining in this guy's body to deal with Huang Tong.

Once the inventory is depleted, we'll select a few lucky fellow cultivators and have a heart-to-heart talk with them.

Of course, all of this is predicated on having sufficient strength.

Yan Cheng lowered his eyes and brows, as sentences floated through his mind.

It is the finished product after the deduction and completion of the "Gathering Yin and Condensing Evil Qi Gathering Technique", named "Gathering Spirit and Gathering Qi Method".

This method is no longer limited to the spiritual energy of black coffins and yin coffins. As long as a spiritual gathering object that is compatible with the cultivator's cultivation method is found, it can be used to assist in condensing spiritual energy.

For Yan Cheng, who wanted to achieve results as soon as possible, this was extremely useful.

But he practiced the Yin-based cultivation method, and for a time, he didn't know where to find the corresponding extremely Yin and cold substances...

At that moment, as Yan Cheng's internal energy circulated, the silver-white mirror buried deep in his consciousness suddenly shone brightly.

The outline of the Hidden Immortal Mirror became so clear in his eyes for the first time:

The silver mirror had an ancient design, with engraved runes of unknown meaning along its edge, radiating a solemn and clear light like the jade belt at the waist of an emperor.

The eight grooves at the front of the lens are shaped like leaves, as if they are waiting for someone destined to fit in its missing parts.

At the center of these eight leaves lies a pure white bead, its clear white mist swirling around it, ready to burst forth.

In this windowless, dark room, a bright moon was reflected in Yan Cheng's pupils.

The moonlight, with each breath he took, transformed into a nectar of jade and nectar, penetrating his body with a bone-chilling cold, sinking into the deepest part of his dantian, where it shone with a brilliant purple light under the intense heat.

"This is……"

The sensation of moonlight entering his body was so wonderful that Yan Cheng momentarily forgot the passage of time.

When I opened my eyes again, the world around me seemed completely different.

The once dimly lit room was now as bright as day, and all four senses were clear and unimpeded. Each sense was countless times more acute than before, just like a long sail breaking through the fog and the light of the sky breaking through the clouds.

The joints of the hands and feet, which had died once, were no longer stiff and numb, and the cool touch between the meridians dispelled the fatigue.

Yan Cheng stepped out of the black coffin, and with a light wave of his arm, a tremendous force followed, the air pressure extinguishing the candlelight.

His eyes, blazing with purple light, opened to their widest point in an instant, only to be overwhelmed by ecstasy moments later.

Wonderful.

He suppressed his overwhelming joy and closed his eyes, recalling the corresponding descriptions in the "Chapter on the Corpse Path of the Upper Underworld":

"The Upper Yin Path is the ancestor of all Yin, and governs the coldness of the North Star."

"The more a spiritual object's imagery aligns with the constellations, the greater its benefit to spiritual practice."

"Unexpectedly, this Immortal-Hidden Mirror happens to be a spirit-gathering object that perfectly matches its imagery!"

Among the constellations in the world, the sun and moon are the most revered, illuminating all things, and all other stars follow their shadows.

The object condensed from the bright pearl at the head of the Hidden Immortal Mirror is, according to the scriptures, called the Moon Laurel Pure Yin Mysterious Essence, which is the most supreme spiritual object of the Taiyin Dao!

Yan Cheng cultivated the Yin Dao and obtained the Yin Moon Essence to temper his body. The benefits he gained were not simply a matter of accelerating his cultivation speed.

Now, nourished by pure energy both inside and out, not only are his five senses far more acute than before, but his physical body is also gradually regaining the agility he had when he was alive.

It can be said that in a single night, he took a step that countless corpse cultivators could not take in half a lifetime!

The coincidences were so striking that Yan Cheng suspected someone might be orchestrating this in secret.

No matter how deep the thoughts of those sinister beings in the Hall of Longevity were, how could they see through his possession of the Immortal Mirror and prepare a special formula for him to practice the Yin Technique?

It's not that the Immortal Sect isn't cunning enough, it's just that they're using cheat codes.

At that moment, only one thought echoed in his mind:

"The reflection of the bright moon in the mirror alone has such a wonderful effect."

"What if... one were to cultivate under the true, bright moon outside the hall?"

Thinking of this, he felt suffocated by the cold, high walls surrounding him.

I couldn't resist rushing outside the palace to bask in the moonlight!

But when I calculated the time, it was almost dawn.

The body in the underworld should not be exposed to sunlight, and it is especially inappropriate for it to be taken out of the coffin during the day.

There is a fear that if the yang energy becomes too strong, it will trigger a backlash of yang fire, burning all five internal organs.

Although Yan Cheng felt that his cultivation method was unique, he was not necessarily afraid of the backlash from the Yang Fire.

However, he was unwilling to risk his life easily, so he stopped when he placed his hand on the doorknob.

Even so, his weary body was restless in the coffin.

He secretly regulated his breathing, and with a thought, purple flames, sometimes bright and sometimes dim, rose from his palm.

Cultivators of the Upper Yin can draw their internal Yang energy to the outside of their bodies and gather it into flames, which are called Upper Yin Star Flames. They appear to be scorching hot, but are actually cold and gloomy inside.

Ordinary corpse cultivators fear the backlash of Yang Fire because they have no other way to release Yang Fire away from their bodies, but Yan Cheng has no such concern.

After being tempered by the moonlight, his cultivation level became much more solid, and his spiritual energy was sufficient to maintain this technique for about a quarter of an hour.

Although it wasn't much, it was enough for him to get a glimpse of what the outside of the Hall of Longevity looked like!