"Bang, bang, bang!"

In the dark and deep cavern, the sound of flesh tearing, crashing, and the roar of wild beasts came and went, and these sounds were intertwined and reverberated in the empty cavern for a long time, like the sound of hell, terrifying and deep.

In this dark cavern, two rays of light and shadow rose and fell, rose and fell, and moved unswervingly towards the bottom of the cave.

In the dark, Lin Yucheng, who was wearing night vision goggles, had numb arms and could only wave the light fan mechanically, he didn't know how many mutated animals he had killed, and he didn't know how long he had been walking in this cave.

If he hadn't known that Shu Xin was in front, he thought he really wouldn't be able to hold on.

At this moment, Shu Xin is not much better than Lin Yucheng, although her physique is stronger than Lin Yucheng, but because she has carried most of the mutant animal attacks, and has consumed a lot of mental power before, her physical strength has dropped significantly.

"Hold on a little longer, and you should be almost at your destination." She could already smell the fishy smell of the evolution fluid.

Lin Yucheng was so tired that he couldn't speak, gritted his teeth and nodded, snorting, indicating that he would persevere.

I don't know how long it took, but the two of them finally saw some light in the dark cavern.

Although the light was blood-red and looked bewitching and bloody, the two of them were still happy.

At this time, there happened to be a turn in the cave, and the mutant animals in the back were all killed by them, and the ones in front rushed forward, without noticing them, Shu Xin stopped, did not continue to go deeper, and said to Lin Yucheng: "Let's rest for a while and recover." ”

Hearing this, Lin Yu leaned against the cave wall as if his horse was falling apart: "I can finally rest, I'm tired to death." ”

Seeing him like this, Shu Xin smiled: "Do you still want to fight the mutant fauna now?" ”

Lin Yucheng was very floating before, and he always said that a single mutant animal was boring to kill, and it was better to fight with the mutant fauna.

Lin Yucheng shook his head like a rattle: "No, no, I don't want to think about it anymore." Boss, why is this cave so deep? It feels like it's deep in the heart of the earth. ”

Shu Xin's eyes flashed, and she said in her heart, why is it not deep, if it is not deep, how can there be evolution liquid seeping out?

Yes, the fluid of evolution seeped out of the Earth's core.

As for why there is evolutionary fluid in the earth's core, in the previous life, aliens explored for a long time, but they didn't find out the reason.

In the previous life, as soon as the evolutionary fluid appeared, the eyes of the aliens were all attracted.

The reason why aliens attach so much importance is because, in the Galactic Interstellar Alliance, only a few planets will give birth to the Evolutionary Fluid.

Of course, the level of the earth's evolutionary fluid is not high, and it can only evolve low-level lifeforms, and the degree of evolution varies from person to person and from quantity to quantity.

Rao is like this, and it is enough to shock the aliens.

Lin Yucheng asked again: "Boss, what kind of treasure do you say there are in the depths of this earth?" ”

The deeper he went into the cavern, the stronger the mutant beast became, and no matter how stupid he was, he knew that there was something good underneath it.

Shu Xin looked at the red light: "If you go down, you'll know." ”

Retracting her gaze, Shu Xin took out a few level 4 nutrients: "Eat this, and your physical strength will recover faster." ”

Lin Yucheng took it and asked while eating, "This is?" ”

"Level 4 nutrients, the energy contained in them is dozens of times higher than that of level 3."

"Boss, where are you from?"

"There's an alien."

“...... Boss, you're amazing, you have so many good things. ”

"You don't need to be envious, when your strength improves, you can also rob and kill aliens."

....... "He's not that good!"

Lin Yucheng couldn't eat a level 4 nutrient anymore.

After resting for a while, Shu Xin saw that his health value had risen to more than 5,000, and said, "You help watch for a while." After speaking, he took out the four-striped spirit leaf and began to absorb it.

When resting, mental power can be automatically restored, however, this speed is very slow, when the spiritual level is low, it is fine, and when it reaches a high level, it is almost negligible.

Spiritual Leaves are needed to improve Mental Power, and Spiritual Leaves are also needed to restore Spiritual Strength.

In this way, the spiritual leaves naturally become a scarce material.

At this moment, Lin Yucheng opened his glasses wide and looked at Shu Xin, as well as the leaves in her hands that were constantly overflowing with white light.

That's how mental power is improved?

Two of the four stripes on the spirit leaf disappeared, Shu Xin opened her eyes, and as soon as she opened her eyes, she saw Lin Yucheng looking at her eagerly, knowing what he was thinking, and said lightly: "This is the spirit leaf, which can enhance and restore spiritual power, I got it from killing aliens." ”

Hearing this, Lin Yu set up a horse and said that he would follow Shu Xin to kill the aliens in the future.

As for the fear of aliens in his heart, he has long forgotten about it.

"Boss, as long as you have this spiritual leaf, can you improve your spiritual power?"

Shu Xin glanced at Lin Yucheng: "Of course not, if you get the spirit leaf, you can absorb it, and Su Shen won't give me the piece in his hand before." ”

Lin Yucheng knew about this, and at that time, Su Shen used a spiritual leaf to exchange it with Shu Xin's mutant ginseng extraction method.

Before, he thought that Shu Xin had lost money, but now that he looks at it, he has made a lot of money.

Without him, the mental attack is too powerful!

Lin Yucheng was puzzled: "But I think it's quite easy for you to absorb." ”

Shu Xin: "That's because I found the right way. ”

Lin Yucheng asked a little embarrassed: "Boss, can you teach me?" ”

Shu Xin said lightly: "When you get the spirit leaf, you're talking." ”

"Hmm!"

"Let's go, go on!"

The light and shadow of the lightsaber and light fan resurfaced in the cave.

"Gollum~"

After a while, Shu Xin and Lin Yucheng heard the sound of liquid boiling.

Soon, the two saw a red pool that looked like a pool of blood and had a diameter of about ten meters.

Around Hongtan, more than a dozen level 4 mutant lizards gathered, all of which completed the transformation from low-level lifeforms to medium-level lifeforms.

Three of them were responsible for intercepting the other mutant animals from approaching the red pool, and the others were all licking the red evolution fluid in the red pool, and after a while, the mutant lizard still knew that the shift was changing in an orderly manner.

It can be seen that the mutant lizard with a level 4 constitution already has a high level of intelligence.

At this moment, Shu Xin completely understood why City C in her previous life became the first alien base to be breached by mutant animals.

Suppressing the heaviness in her heart, Shu Xin quickly checked the body data of these mutant lizards, and the physique points were all frighteningly high, almost all of them were above 5,000.

These mutant lizards must not be allowed to continue to grow, otherwise, the difficulties of the previous life will be staged again.

This cave and Hongtan also have to be controlled, and no more mutant animals can be allowed in, otherwise, it won't be long before another level 4 mutant animal appears.