Inside the cave, Gu Yuan sat cross-legged on the ground, eyes closed, holding a khaki demon core in his hand. Beside him lay a small pile of gray powder—a fourth-level demon core whose energy had been completely depleted.
The energy contained in the fourth-level demon core and the difficulty of absorbing it were beyond Gu Yuan's imagination. In the past, when he absorbed the first-level demon core, he could absorb it anytime and anywhere, but the process of absorbing the fourth-level demon core in the past few days made him suffer.
At a certain moment, Gu Yuan's body suddenly began to tremble.
He suddenly opened his eyes and stared at the Level 4 Demon Core in his hand. Above the Demon Core, a faint snake-like shadow swirled out. Gu Yuan knew that this was the remnant of the Earth Spirit Demon Snake.
The so-called residual soul is the resentment left in the monster's core before its death.
As we all know, it is more difficult for monsters to practice cultivation than humans. Monsters at the Spirit Master level usually practice for hundreds of years. This is why high-level monsters will have resentment after death.
The lingering resentment is hidden deep within the demon core. Once someone uses their demon core to refine pills or use them for other purposes, their residual spirits will come out from the depths of the demon core and deal a fatal blow to the person who uses their demon core.
And Gu Yuan is facing this situation at the moment.
"Humph! It only contains a trace of residual soul, yet it still dares to come out and struggle!"
Gu Yuan snorted coldly, without any panic. His previous experiences had made him accustomed to this kind of situation.
The big hand transformed from spiritual energy grabbed the seven-inch point of the Earth Spirit Demon Snake. Gu Yuan knew that you have to hit the snake at its most vulnerable point.
The remaining spirit of the Earth Spirit Demon Snake spit out a crimson tongue, with a hint of coldness in its eyes. Its triangular snake head swayed left and right as it attacked Gu Yuan.
"Just let me absorb it!"
Although this Earth Spirit Demon Snake was a spirit master-level monster in its lifetime, it is now just a remnant spirit, and judging from its current state, it is unknown how many years it has been around.
Gu Yuan was calm and fearless. He pointed his spiritual hand at the seven inches of the Earth Spirit Demon Snake. In an instant, the remaining spirit of the Earth Spirit Demon Snake was controlled by Gu Yuan.
"Tsk, I thought he was so awesome, but it turns out he was just pretending."
Gu Yuan smacked his lips as he felt the Earth Spirit Demon Snake's attack on his soul. The Earth Spirit Demon Snake's remnant spirit existed as a residual soul, naturally using its soul power to attack others. Previously, Gu Yuan would have been caught off guard and indeed feared this existence. But now, he actually looked forward to the presence of this remnant spirit.
Gu Yuan was seen holding the remnant soul tightly in his hand, and then the Wanhua Soul-Devouring Technique in his body was running wildly, making the originally illusory remnant soul even more illusory.
The remnant soul seemed to sense something, a trace of fear appeared in its snake eyes, and then it began to struggle frantically, but Gu Yuan was pinching it tightly at the seven-inch point, and it could not break free no matter what it did.
"Ten Thousand Transformations Soul Devouring Art, refine!"
Gu Yuan shouted softly, and the remaining spirit of the Earth Spirit Demon Snake struggled less and less. As the last trace of spirituality in the snake's eyes disappeared, a smile appeared on Gu Yuan's face.
A quarter of an hour later, a gray ball of light the size of a fingernail floated in front of Gu Yuan's eyes. Gu Yuan's smile widened, and then he sucked the ball of light into his mouth.
Another half an hour passed, and Gu Yuan opened his eyes with satisfaction in his eyes.
"This Myriad Transformations Soul Devouring Technique is truly a heaven-defying technique. It can refine demon cores, refine essence and blood, and now even souls can be used for cultivation."
It turned out that after the first encounter with the residual spirit attack, Gu Yuan accidentally discovered another use of the Wanhua Devouring Soul Art, which was: refining the soul! Refining the soul into its original form, and then nourishing one's own soul and increasing the power of the soul.
The ball of light just now was the soul essence of the Earth Spirit Demon Snake. Of course, because the residual soul was incomplete, the essence refined this time was not much.
"Hmm, my soul power seems to have entered the intermediate level of the Void Realm."
Gu Yuan felt his soul and showed a hint of surprise. He reached the intermediate level so quickly?
The soul sounds like an illusory thing, but for spiritual practitioners, it really exists. Moreover, in the holy land of cultivation on that continent, the Central Region, there are some people who are soul practitioners, that is, practitioners who mainly cultivate the soul. They basically use soul power as a means to directly attack the opponent's soul. The horror of this can be imagined.
Before this, Gu Yuan had never known anything about the soul, but ever since Gu Shang said that her soul was severely injured after being beaten last time, Gu Yuan began to pay attention to these things intentionally or unintentionally.
It was also from then on that he learned that the soul was also divided into levels. Although it was not as strict as the strength level division of spiritual cultivators, it was also divided into seven levels: soul tempering, spirit fusion, virtual realm, real realm, death realm, life realm, and reincarnation mirror.
Each realm is divided into three levels: high, medium and low.
Like the human body, the human soul also has impurities.
The so-called soul tempering is the initial soul tempering and purification of the soul's origin.
To fuse the spirit is to further refine one's soul and make it more compatible with the body.
The virtual state is the minimum requirement for the external release of soul power.
The real realm is the materialization of soul power. Souls at this level can use soul power as a means to directly attack the souls of others.
The realm of death, in this realm the soul can separate from the body and exist alone as a soul.
Although the Earth Spirit Demon Snake existed in the form of a residual spirit, it was a trace of soul mixed with resentment, and its essence was still resentment. Therefore, its soul did not enter the realm of death.
When a soul exists alone, its soul power will gradually disappear with the passage of time. However, a soul that enters a living environment can greatly slow down the loss of its soul, and then find a suitable body to be reborn.
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