The growth conditions are extremely harsh.

The environment in which it grows must be a place with an extremely strong sinister atmosphere, otherwise it is like a tree without soil, and it will not be able to survive and grow at all.

Although it is difficult to form a place with a strong yin and evil aura, there are still some after all, and the most critical point of the Yuan Soul Evil Grass is that it does not grow naturally, but is formed by the fusion of the rich Yin and evil qi and the powerful soul, and the soul will be run in for thousands of years, and finally it will turn into the Yuan Soul Evil Grass and grow in the place with a strong Yin and evil breath.

That's right, there is at least one soul in every Yuan Soul Grass, which is one of the reasons why it is called the Yuan Soul Grass.

As for what kind of existence the soul fused into the Yuan Soul Grass is, there is no record in the Black Book, but it is mentioned that the formation of the Yuan Soul Grass and the rash touch of the Yuan Soul Grass will be affected by inexplicable weirdness.

Anyone who comes into contact with the Yuan Soul Evil Grass will either have their soul power increased or die tragically on the spot, or they will be invaded by a powerful yin aura and turned into a machine that only knows how to kill, without the slightest emotion to speak of.

Luo Song touched the Yuan Soul Grass, obviously the former, and his soul power was refined a lot, especially the three Yuan Soul Grass, which made his powerful soul power as much as thirty percent pure.

You must know that before this, Luo Song devoured the soul power in the ghost fire, which made its soul power increase rapidly.

Although that kind of ascension did not leave any sequelae, after all, it was not the soul power that he had cultivated by himself, it was more or less commonplace, it was just a large amount, and it was not very profound.

And those three Yuan Soul Herbs purified and condensed his loose soul power, although the soul power weakened a lot, but its purity was incomparable to before.

This is like wrought iron, only after a thousand tempers, can you forge a peerless sword, otherwise when you encounter a strong opponent, its disadvantages will be revealed, but it will leave a great hidden danger to yourself.

After reading the introduction of the Yuan Soul Grass in the Black Book, Luo Song finally understood why every time the sea of knowledge calmed down, a gray face emerged.

If he hadn't guessed wrong, those gray faces must have been the powerful souls in the Yuan Soul Grass, and as for the strange calamities that would be caused by touching the Yuan Soul Grass, he seemed to have understood.

Thinking that when he touched the Yuan Soul Grass, the powerful soul that had been assimilated in it rushed into his sea of consciousness, wanting to swallow his consciousness and soul and replace it with something similar to taking it.

It's just that judging from the records in the black book, the person who was eroded by the Yuan Soul Grass was like turning into a fierce beast that could only kill, and the powerful soul in it should have long been unconscious, and it should be the pure soul left behind after being wiped out by the Yuan Soul Grass.

It's just that because of the yin and evil qi in the Yuan Soul Evil Grass, the soul in it becomes a evil soul, and it is naturally aggressive, once a living creature touches them, the soul in the Yuan Soul Evil Grass will automatically attack the soul of the living being, and will never stop until it is devoured.

Luo Song's heart palpitated suddenly, if it weren't for the automatic operation of the Annihilation Secret Technique, which would have destroyed the soul that had invaded his sea of consciousness, I am afraid that he would have been wiped out by now, and the body left behind would be controlled by the soul and become a beast that could only kill, and his imagination made him feel afraid.

Fortunately, he had the secret technique of annihilation, which not only destroyed the soul that invaded his sea of consciousness, but also absorbed the soul power of the pure soul, and purified his soul power a lot.

When Luo Song came to his senses, he looked at the remaining three Yuan Soul Evil Grasses, his eyes were hot, and he touched one of them without hesitation.

Suddenly, Luo Song's expression froze, and the light in his eyes also lost his brilliance, and it took a whole stick of incense to recover.

In the following time, Luo Song naturally unceremoniously touched the other two Yuan Soul Evil Grasses, deliberately luring the evil souls into his sea of consciousness, taking the opportunity to purify his soul power.

If it was other spirit grass, Luo Song would definitely pick and preserve it, or refine it into an elixir, but unfortunately this Yuan Soul Evil Grass was not like other spirit grasses, or the Yuan Soul Evil Grass was not a spirit grass at all, and it would not be an exaggeration to say that he was a special evil soul.

When this primordial soul grass touches it, the powerful evil soul within it will invade the sea of consciousness, and it cannot be picked by ordinary picking methods.

Even if you use a special method to see the Yuan Soul Evil Grass picked, if there is no strong Yin Evil Qi, the Yuan Soul Evil Grass will die in a short time, and the evil soul inside will also die with the death of the Yuan Soul Evil Grass, thus dissipating between heaven and earth.

After an hour, Luo Song slowly opened his eyes, his eyes were full of essence, and the spirit of the whole person became full, obviously the six Yuan Soul Evil Grass was of great help to him.

The soul power in the ghost fire was devoured before, and now the soul condensing miracle effect of the six Yuan Soul Evil Grasses can be said to be the place of inheritance this time, and his first creation is soul power.

If this is known by other people, especially Long You, who also has a mastery of soul attacks, I am afraid that he will be so jealous that he vomits blood, such a once-in-a-lifetime opportunity, how 'terrifying' it can be.

After calming down the soul power in the sea of consciousness, Luo Song stood up, glanced at the six dried Yuan Soul Grass, and after his eyes flickered a few times, he walked towards the front of the deep valley again, and did not destroy the dead Yuan Soul Grass.

In the cultivation world, there is an unwritten rule, that is, when picking heavenly and earthly treasures, there must be a glimmer of life, so that the heavenly materials and earthly treasures will have another chance to grow again, and will not disappear immediately.

Although the Primal Soul Evil Grass is very special, it should not come back to life in the future, after all, the Soul Evil Grass in it has disappeared, and the only thing waiting for the Primal Soul Evil Grass is to completely die.

However, as an alchemist, Luo Song knows better than ordinary people that even if it seems impossible, under the nourishment of the environment of heaven and earth, even if it is a certain death, there will be a possibility of survival.

Although Luo Song is not a bad person, he asked himself that as an alchemist, he had done everything he could, and there was no need to completely destroy the six dead Yuan Soul Evil Grasses, leaving a glimmer of life, which could be regarded as leaving some hope for future generations.

Perhaps because of the purity of his soul power, Luo Song's divine sense, which could only cover a range of 100 meters at the bottom of the valley, had now reached more than 600 meters, which made him surprised and delighted.

Although the range of more than 600 meters is still very small, if there is any abnormal movement at the bottom of the valley, he can also detect it in advance, and prepare or react to it, so that there will not be a little buffer time.

Creak~

Walking at the bottom of the dark valley, Luo Song suddenly heard a small sound.

There is nothing special about this sound, because it is similar to the sound of ordinary mice, but I don't know why, Luo Song always feels that this sound is very strange, revealing an indescribable feeling, which makes him feel irritable in his heart.

Wrong!

Just as Luo Song frowned, his gaze suddenly turned, and he raised his hand and punched out.

Bang!

Luo Song smashed his fist on the mountain wall, and his arm was like a spear that broke the edge, directly penetrating into the mountain wall.

Creak~~

Suddenly, the strange cry was chaotic, and when Luo Song looked at it, he saw many black shadows flashing under his feet, and they were black rats the size of palms.

What Luo Song noticed was that these black rats had turquoise eyes and three tails.

Maybe it was because of Luo Song's punch that alarmed the rats in the mountain gap, and one by one the rats rushed out of the mountain gap, all of them rushed in a certain direction, and the speed was very fast, if Luo Song didn't look carefully, I am afraid he couldn't see that these were rats clearly.

Seeing this, Luo Song seemed to realize something, and immediately chased after the rat group, wanting to see where these strange rats wanted to go.

The speed of the rat swarm is very fast, although the bottom of this valley cannot fly, but after all, Luo Song is a physical cultivator whose physical body has reached the Qi Void Realm, and the speed of his foot strength is not much better than that of the peak cultivators of the Qi Void Realm.

He followed the rat swarm all the way, and after a while, he found several forks in the road, and Luo Song rushed into the rightmost fork without hesitation, which was the direction where the rats gathered.

In this valley where divine consciousness is limited and mysterious and unpredictable, only the living creatures that keep up with the valley are the most correct choice, after all, the rats can survive until now, and naturally have their unique ability to seek good fortune and avoid harm.

However, just as Luo Song rushed into the fork in the road, he didn't notice that behind him, a black figure followed.

The black figure didn't know when to follow Luo Song, he stopped a moment in front of the fork in the road, and finally did not choose the same fork in the road as Luo Song, but chose the leftmost intersection, which was exactly the opposite of Luo Song's choice.

It didn't take long for the swarm of rats that had been rushing towards the fork in the right to the fork in the road to suddenly mess up at the fork in the road, and there was a 'squeak' call.

After a few moments, the chaotic rat swarm regained order again, but the direction in which they gathered was no longer the fork in the road chosen by Luo Song, but the direction of the fork in the road chosen by the black figure on the far left.

Luo Song didn't know all this, because at this moment he was following the group of rats, heading towards the depths of the fork in the road, but the more he walked, the more he felt that something was wrong.

At the beginning, the rats leading the way in front of them were not very neat, but at least they could see some order between them, but as they went deeper and deeper into this intersection, the order between the rats became more and more disordered, as if they were disturbed by an invisible force, or rather......

Luo Song paused suddenly, his expression was extremely solemn, and when he hurriedly looked back, there was not a mouse behind him who followed the mouse in front.

This......

Seeing this, Luo Song had a vague bad premonition in his heart, he frowned slightly, and when he turned around again, he found that in the darkness in front of him, a pair of scarlet eyes appeared, staring at him at the moment.

Not only that, Luo Song even felt that there seemed to be some kind of aura in the void, which made the spiritual power in his body begin to become sluggish.

The aura was invisible, but it was like a seal, sealing the spiritual power in his body step by step, which made Luo Song's heart awe-inspiring, looking at the scarlet eyes staring at him, he knew that it was a big deal at the moment.