On the other hand, after Duan Gujin returned to the Blood Killing Sect, he realized that his Divine Soul Power had surged tremendously. He could now control the refinement of elixir pills with even greater precision, reaching an entirely new realm he had never achieved before.

Duan Gujin began to practice his soul fire power within his residence, aiming to merge it with the energy from the Netherworld into one realm.

Initially, he did not release the energy from the Netherworld, but only released all of his soul fire power.

15 minutes later, Duan Gujin released all the energy of the Netherworld.

Once he released all of the energy from the Netherworld, he found his body rapidly freezing over.

With a motion of his mind, he circulated his Primordial Power and melted the ice.

"It seems I still need to practice a few more times in order to skillfully master the Yin Cold Power of the Netherworld."

Duan Gujin continuously formed hand seals, released soul fire, and kept practicing.

After two hours of continuous practice, he no longer experienced the situation where his body would freeze over as it did the first time.

Seeing the blazing soul fire being released from his left hand, and a blue, yet extremely cold flame emanating from his right hand, Duan Gujin's eyes flashed as he was reminded of a legend.

"Could it be that I have now reached the Yin Yang Coexistence realm?"

The so-called Yin Yang Coexistence means that within a Martial Artist's body, there is a soul fire burning like flames, as well as a soul fire as cold as ice.

These are two entirely different types of soul fire; both can assist a Martial Artist in refining elixir pills, and both can be used to slay enemies with soul fire power.

Under normal circumstances, almost any Human Warrior will have a soul fire that can produce blazing flames, but very few Human Warriors possess a soul fire that can emit Yin Cold Aura.

And in the world of the Demon Clan, many demons are born with a soul fire that can emit Yin Cold Aura.

In most cases, these two distinctly different types of soul fire are unlikely to appear simultaneously within a Martial Artist.

If a Martial Artist suddenly has both types of soul fire appear, it indicates that the Martial Artist's soul fire has reached the Yin Yang Coexistence realm.

In his previous life, Duan Gujin only had a soul fire that could produce blazing flames, and he brought his soul fire to the limit, reaching the Pure Yang realm.

Under normal circumstances, when a Martial Artist brings a certain type of power to its Peak State, this is a form of success.

On the other hand, if a Martial Artist perfectly merges different types of power together and brings out the characteristics of both different powers, this is also considered another form of success.

After much practice, Duan Gujin finally succeeded in merging the soul fire powers within his body, which are different from the Pure Yang soul fire of his previous life.

His previous life was dedicated to the extreme path of fire, but this time he was able to merge Netherworld power with Pure Yang power, and he felt that he should be able to harness the power of the Netherworld.

This realm of Yin Yang Coexistence can sometimes refine very special Immortal Pills.

The path of heaven and earth lies in one Yin and one Yang.

In his past alchemy, he realized that he followed the Pure Yang Path, and although this Pure Yang Path allowed him to reach the ultimate in some elixir pill refinement, the lack of Pure Yin Power left him with regret, as he was unable to refine some very special Immortal Pills.

When alchemy reaches the Peak State, Yin Yang Coexistence is needed.

It is said that when a Martial Artist's soul fire achieves Yin Yang Coexistence, a miraculous ability called Creation from Nothing is produced.

In his previous life, Duan Gujin witnessed an Alchemist achieve Creation from Nothing, leaving him astonished.

He was very clear in his mind that acquiring the power of the Netherworld only meant the merging of Yin and Yang within his soul fire, and to become an Alchemist capable of Creation from Nothing, he still had a long way to go.

"I remember once during an Alchemist test, the topic was Yin Yang Coexistence!"

He recalled an Alchemist test from his previous life, where an Alchemist possessing both types of soul fire power profoundly shocked him.

He never expected that in this world there could also be soul fire capable of Yin Yang Coexistence, which completely overturned his past understanding.

"Let me test and see to what realm my Spiritual Power has reached now."

He took a deep breath and then quickly sketched the shape of a large tree in his mind.

At the same time, his hands were continuously forming seals.

Moments later, a clump of Qing light revealed itself in front of him.

That is a glowing seed, a product of the fusion of his Soul Fire.

After a while, under his practice, the seed began to grow.

The Soul Fire within him emanated outwards, the glows of Fire Power and Yin Cold Energy merging together, flickering incessantly upon the slowly forming tree trunk.

The tree trunk radiated dazzling and blinding light.

Duan Gujin took a deep breath; in his mouth, he held a drop of Ten-thousand-year-old Divine Milk.

Should his Primordial Power and Spiritual Power be overly depleted during practice, he would truly drink that drop of Ten-thousand-year-old Divine Milk, allowing his Primordial Power and Spiritual Power to rapidly replenish.

Initially, he merely allowed the separate glimmers of Yin and Yang soul fire power to overflow and stream upon the seed.

At first, this was not difficult.

As time passed bit by bit, a moment later, a branch slowly sprouted from the side of the seed.

That branch, like the seed, also emitted gleaming light.

However, previously, the seed remained motionless.

But now it was different, Duan Gujin made the branch slowly emerge from one end of the seed.

To achieve this, Duan Gujin's Primordial Power and Spiritual Power would be consumed even faster and in greater amounts than before.

Duan Gujin took another deep breath and continued to let more branches sprout from the seed.

For each additional branch that emerged, he had to expend double the Primordial Power and Spiritual Power.

This was his first attempt, and he dared not take it lightly.

By the time five branches had sprouted from the seed, he felt himself becoming drowsy.

He immediately realized that he must have reached his limit.

Thus, he quickly drank the drop of Ten-thousand-year-old Divine Milk in his mouth.

Fifteen minutes later, his Primordial Power and Spiritual Power were restored.

He took a deep breath and continued his relentless practice.

At this time, the virtual shadow of the tree in his hand still lingered in the air.

After a while, he made the seed disappear.

Once the seed was gone, he turned the main trunk of the large tree into the central focus, and the other trunks into branches.

This kind of practice was a very special method of training Soul Power, allowing a Martial Artist to imprint all of their current Spiritual Power.

However, at this moment, Duan Gujin only wanted to practice his Spiritual Power, so he had no intention of imprinting the virtual shadow on a Dark Weapon.

Immediately afterward, the virtual shadow before him transformed into a large tree with five main branches.

He took a deep breath, his mind racing, aiming to sprout some twigs and leaves on those five large branches.

After a moment, a strand of leaves grew upon one of the branches.

Those leaves, like the seed and the trunk, all emitted a gleaming light.

After releasing more than a dozen leaves, Duan Gujin felt his Spiritual Power was overly depleted; he could barely hold on.

In order to know his limit, he continued to strive and endure.

It was only after adding two more leaves that he finally ran out of Primordial Power and Spiritual Power to continue.

The virtual shadow of the large tree in front of him collapsed, turning into smoke in an instant.

Once that virtual shadow collapsed, to restore it one must start from the very beginning.

Duan Gujin exhaled a breath; he did not start over from the beginning.

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