Cyan Profound Fiend, the third stage after Black Evil advances.
Don't be fooled into thinking it's just two layers of advancement, but this is the key point where the power of Black Evil Technique significantly skyrockets from the bottom-tier Demon Cultivation Technique.
After all, the power of Black Evil Qi cultivated from ordinary Black Evil Technique is not noteworthy. Even after refining Nine-headed Evil Ghost Vengeful Spirits or Cultivator's Divine Souls, the obtained Profound Yin Fiend still cannot match the other Demon Techniques.
But, when Black Evil Qi advances to Cyan Profound Fiend, it must devour and refine ninety-nine Resentful Spirits and Evil Ghosts, or an equal number of Cultivator's Divine Souls.
If you calculate according to the ten-to-one ratio of live Life Souls to Fierce Ghosts, the amount required is even more terrifying.
Therefore, after mastering this Cyan Profound Fiend, Zheng Yi's strength invisibly increased several times over.
Do not underestimate this small Cyan Profound Fiend Spirit Flame.
The energy condensed from this Cultivation Technique, if it attacks an enemy, can instantly make the opponent's body stiff and freeze, causing the Spiritual Power inside to disperse.
It can even corrode Magical Artifacts, making it difficult for the opponent to form Magic Spirit Contracts, unable to release powerful attacks.
Moreover, the power of Cyan Profound Fiend is several times stronger than that of Black Evil or Profound Yin Fiend, which can be attached to a Magical Artifact or Flying Sword for release, making its power even more formidable.
It's no exaggeration to say that with this skill of Cyan Profound Fiend Spirit Flame, as long as it's not against a High Tier Qi Cultivator, Zheng Yi doesn't even need to use the Soul-Catching Banner to deal with Qi Cultivation Sixth Layer cultivators, which already counts as fighting across minor levels.
If used together with the Soul-Catching Banner, relying on the many Fierce Ghosts and Main Soul refined within it, Zheng Yi would not fear even if the enemy is Qi Cultivation Seventh Layer.
"It seems that coming to this Demon Sect Soul Catching Sect was the right choice."
Even Zheng Yi couldn't help but feel a bit shaken. In just a few months, his strength had risen from Qi Cultivation Third Layer to Qi Cultivation Fourth Layer.
And with the aid of the Soul-Catching Banner, a Lifebound Spiritual Artifact, and the Cyan Profound Fiend that Black Evil Technique advanced to, his actual combat power could even contend with the High Tier Qi Cultivation cultivators at Qi Cultivation Seventh Layer.
Compared to before, it was truly like heaven and earth.
After refining one Hundred-Year-Old Ghost, the Cultivation Technique improved further, and after advancing to Cyan Profound Fiend, Zheng Yi's refining capability greatly increased.
Then he shook the Soul-Catching Banner, and immediately summoned the second suppressed Hundred-Year-Old Cyan Ghost.
He continued to refine Cyan Essence!
...
After completing the exploration of the Ghost Mansion's underground garage, Zheng Yi didn't linger, returning directly to the inn in Blood Mist Abyss City of the Demon Realm. After some quick tidying, he stepped out of the inn.
Walking in Blood Mist Abyss City was busier than imagined, with many cultivators setting up stalls. However, it still paled in comparison to a City of Independent Cultivators like Profound Void City, as many Demon Dao cultivators were solitary and hurried.
Compared to the bright colors of Immortal Domain Profound Void City, the entire Blood Mist Abyss City appeared much more gloomy. The clothing of many Demon Dao cultivators was mainly in black and gray.
Many carried a tangible fierce Evil Qi on them, far from the tranquility of righteous cultivators.
Especially if one practiced the Spirit Eye Skill, one could clearly see some Demon Dao cultivators enveloped in a visible black mist mingled with blood tinge, faintly showing some roaring soul shadows.
Just a glance makes one feel a rush of Resentment straight to the brain, as if stirring the mind.
Whenever others saw such demon cultivators, the people around would immediately shy away, appearing quite apprehensive.
This is the result of being entangled with Blood Fiend and Karmic Force!
It shows that these people hold no small number of mortal lives in their hands.
Such cultivators, regardless of the path they tread toward oblivion, using evil means to delve into the Evil Demon Dao, are considered mad even among Demon Cultivators.
Of course, these are still considered moderate.
Some Evil Cultivators suffer severe backlash, unable even to maintain a basic human form or sense, turning into purely bloodthirsty monsters.
Of course, no Demon Dao cultivators can tolerate such individuals; they would have long been killed and their flesh and blood made into Demon Artifacts.
The competition within these demonic regions is very fierce, and the survival crisis is much greater than in other regions.
Perhaps only sufficient strength could ensure one's safety and live well here.
Controlling the Soul-Catching Banner, Zheng Yi condensed a mass of black mist to cover his true face.
Without pausing, Zheng Yi arrived at a shop selling cultivation resources and directly took out a bottle containing a "Cyan Essence" refined from a Centennial Cyan Ghost's body, inquiring about the price.
The shopkeeper, with a bland expression, took the bottle and opened the cap, revealing a hint of seriousness on his face.
Holding the bottle with one hand, he gently fanned at the bottle's opening with his other palm and sniffed slightly, inwardly delighted.
Only then did he raise his head, glancing once again at Zheng Yi, whose face was hidden by the black fog, but with no change in expression, instead showing a bit of disdain.
"The Cyan Essence from a Hundred-Year-Old Cyan Ghost, quality is decent, but the Dao Practice is a bit shallow, and it's heavily damaged, leading to some loss of its original source."
"Name a price, I'll offer fifteen hundred Spirit Stones."
Hearing this, Zheng Yi turned and left.
He was already well-prepared and wasn't just a pure novice; the Soul Catching Sect was adept in soul manipulation, and their cultivation techniques included introductions to these Soul Dao Spiritual Objects.
Moreover, before coming, Zheng Yi had given a half-piece of Spirit Crystal to a small servant at the inn to inquire about market prices.
The Essence of such Centennial Ghosts was in great demand among demon cultivators, especially for ghostly forms like Cyan Ghosts, with prices at least above two thousand low-grade Spirit Stones, considered scarce cultivation resources.
Had it not been for a lack of Spirit Stones, with the thirteen hundred Spirit Stones acquired from selling the residence right in Immortal Domain Profound Void City almost spent after bribery, Zheng Yi might not have been willing to sell this Cyan Ghost's Cyan Essence.
Putting it away to exchange for some materials or Magical Artifact components later on would be far more beneficial.
Cultivators, in terms of humanity, are not much different than ordinary mortals, especially in business, where they are just as shrewd.
As the saying goes, there is no business without deceit.
This shopkeeper seemed to assess Zheng Yi's low cultivation level and attempted to exploit him, thinking he could purchase the Cyan Essence of a Hundred-Year-Old Cyan Ghost for fifteen hundred low-grade Spirit Stones, which was quite overambitious.
Seeing the lack of sincerity from the other party, Zheng Yi naturally wouldn't dwell or haggle, firmly reclaiming the bottle with Cyan Essence and turning to leave.
Even as the shopkeeper urgently called out from behind, Zheng Yi didn't stop for a moment.
In Blood Mist Abyss City, with rules established by Venerable Blood Mist, the shopkeepers wouldn't dare have any malicious intentions.
Rather than wasting time with this insincere shopkeeper, it was better to explore more shops.
After visiting three or four shops, the highest offer was only twenty-two hundred low-grade Spirit Stones, which still didn't reach Zheng Yi's expected price.
"Oh?"
"Cyan Essence?! This is quite a treasure..."
The sixth shopkeeper who saw the Cyan Essence in a Jade Bottle couldn't help but be delighted and immediately said.
"May I take a closer look at it?"
"Please!"
Zheng Yi pushed the bottle forward and placed it in front of the shopkeeper.