"Ice, cool, refreshing......"

This is Su Chen's feeling at the moment.

The crystal nucleus of the Frost Python gradually melted in Su Chen's body at this time, and it gradually became a part of Su Chen.

Su Chen understood that this was a successful absorption!

Su Chen slowly opened his eyes and raised his hand to look at his palm.

Gently urging the energy in his body, the frost that could freeze the space slowly poured out of his palm.

"This is the frost power of the Frost Python! Unexpectedly, these two unrelated attributes could achieve a strange fusion on the body of the Frost Python! Thank you for nature's bounty. ”

Su Chen clasped his hands together to express his gratitude.

Then, Su Chen saw behind Duan Ya, the gold that was about to be scared silly.

"What's wrong with it?"

Duan Ya was a little helpless.

Duan Ya blocked Su Chen's perception just now, and he naturally couldn't hear Jinjin's screams just now.

The gold meowed, expressing his inner dissatisfaction.

I'm cold!

Duan Ya smiled: "It's nothing, how are you feeling now." ”

Su Chen raised his hand slightly, and the coldness surged back and forth around him, feeling like a part of his body, and it felt like it could melt into the space at any time.

"I feel good, Frost Python's skills, I've mastered most of them now."

Then, dense white scales appeared on Su Chen's body.

These white scales directly replaced the previous dark green snake scales, becoming Su Chen's strongest means of defense!

The scales of the third-level atavistic beast are naturally much stronger than the previous scales of the snake!

One crystal nucleus can bring him two skills, which is already a very good deal!

Su Chen looked around: "I'm ready to hit the fourth level, look around." ”

Duan Ya nodded: "Don't worry!" ”

Su Chen took out more than forty crystal nuclei to prepare for the impact on the fourth-level human race.

According to his previous experience, he needed a lot more crystal nuclei to upgrade than ordinary people!

However, he also reacted, the more crystal nuclei he needed, the more powerful he was to be than ordinary peers!

Previous experiments were not accurate!

He sat cross-legged on the ground, absorbing the energy from the crystal nuclei around him!

After those energies entered his body, they quickly washed away the impurities in his body, making every cell in his body undergo growth and upgrading.

Fourth-level human!

The defense power has been greatly improved, and it can be able to ignore conventional thermal weapons in a real sense!

Even if it is an unconventional weapon, as long as the fourth-level human is prepared, it will basically not cause any danger to life.

In addition to defense, physical fitness, recovery ability, physical and mental combat ability will be greatly improved!

Yes, Level 3 humans and Level 4 humans are not the same species at all!

Fourth-level human beings can already be regarded as superhuman.

And the third-level human can only be regarded as an enhanced human being, in the face of conventional weapons, if you are not careful, you will still be killed!

Su Chen sat cross-legged on the ground, and the surrounding crystal nuclei turned into energy, frantically pouring into his body!

Originally, he thought that forty crystal nuclei would be enough, but he didn't expect his body's thirst for energy to be so strong!

Forty crystal nuclei didn't fill his body at all!

But fortunately, so far, in addition to the lack of materials, there is no shortage of crystal nuclei!

He had killed countless alien corpses and atavistic beasts in Shangdu, and those crystal nuclei were all in his alien space!

Su Chen directly took out four hundred crystal nuclei this time!

I don't believe that's enough!

These four hundred crystal nuclei are basically first-level alien corpses or atavistic beasts.

These crystal nuclei have the most primitive mutation energy, although the level is not high, but the energy purity is not low!

There is no obvious hierarchy of crystal nuclei, and the higher the crystal nucleus, the more troublesome it is to store.

Once the crystal nucleus is obtained, the energy in the crystal nucleus will be slowly lost, and if it is not used for a long time, it will eventually become a waste nucleus.

So, basically, the high-grade crystal nucleus is either absorbed directly or handed over to the employer as soon as possible.

Only Su Chen can directly store crystal nuclei without fear of energy loss.

This is also the reason why crystal nuclei are more precious.

Duan Ya hadn't seen many scenes where people were upgraded, and the most she had seen was Su Chen.

But she couldn't help but be a little surprised when she saw that Su Chen took out four hundred crystal nuclei for upgrading.

The speed of crystal nucleus consumption is not very fast, four hundred crystal nuclei, the consumption is less than one-tenth.

The crystal nuclei that Su Chen needed for this upgrade were about seventy.

Maybe for others, there are a lot of these crystal nuclei, and it is difficult to find.

But for Su Chenlai, sprinkled with water.

The energy kept impacting his body, and the original third-level human beings had undergone a complete transformation at this time!

Streams of faint energy floated around him, and those energies were on the surface of his body, almost making his body an energy body!

That energy is too much energy absorbed in the body, and it gradually overflows the surface of the body.

However, the fugitive energy is still suspended on the surface of his body, which shows that his control over energy has reached a new level!

Su Chen suddenly opened his eyes, and the energy around him began to flow with his body!

Finally, it condensed into a round ball and gathered in the palm of his hand!

"Fourth-level humans, who can manipulate and use earth energy, can no longer rely on crystal nucleus energy!"

This is the difference between a fourth-level human and a third-level human, and it is also a qualitative leap!

Duan Ya was pleasantly surprised: "You succeeded!" ”

Su Chen nodded: "It's successful, and you have finally become a fourth-level human!" ”

In his previous life, Su Chen had not reached this height, and now that he has become a fourth-level human being, he can be regarded as having fulfilled a long-cherished wish!

When the two of them said this, they suddenly felt a cold feeling coming from outside the door!

Duan Ya was puzzled: "What's the matter?" ”

Su Chen frowned slightly, and then suddenly opened his eyes: "Not good! I'm afraid it's not Dai Yu absorbing the crystal nucleus of the ice hedgehog! ”

Su Chen immediately snatched the door out and directly pushed open Dai Yu's door!

At this time, Dai Yu's whole body was like an ice hedgehog, covered with spikes!

A cold breath emanated from Dai Yu's body!

Duan Ya was surprised: "Why did he absorb this crystal nucleus like this?" ”

Su Chen observed carefully, and suddenly: "This guy is a second goods!" He didn't even know that it was time to upgrade, and now his body was snatching the energy of the alien crystal, so that the alien crystal nucleus was out of control in his body! ”

Su Chen immediately took out more than a hundred crystal nuclei from the space and placed them around Dai Yu.

When the crystal nucleus first appeared, the closest crystal nucleus instantly turned into energy and floated into Dai Yu's body!

The body that snatched the energy of the alienated crystal nucleus gradually stopped!

"! That is, this son has strong physical fitness, if this is not spared, it will be finished a long time ago! ”

Duan Ya looked at Dai Yu with a nervous expression: "He'll be fine, right?" ”

Su Chen shook his head: "It's okay, don't worry." ”

Dai Yu's physical fitness is very strong, even if there is a problem with his body, he can recover again with medicine, so it is not that he does not have to worry about this problem.

What Su Chen was worried about was whether this guy would be devoured by the alienated crystal nucleus......

Absorbing alienated crystal nuclei is not without risk.

As long as it is absorbed normally, there is basically no danger.

But after all, the crystal nucleus is something that grows in the head of the atavistic beast, and it has the will of the atavistic beast.

Dai Yu now happened to be upgrading and devouring the crystal nucleus together, and he was worried that there would be a problem.

Even if it is Su Chen, he will devour the crystal nucleus first, and then upgrade it!