Yun Ye looked around, and after finding that there were no mutants around, he immediately found a room nearby and hid in it.

After confirming that the room was temporarily safe, Yun Ye slowly squatted down against the wall, he had suffered two spiritual attacks just now, although it didn't cause any major damage to Yun Ye, but his head still hurt terribly, as if it was about to crack.

"The spiritual attack is really powerful, intangible matter, but it is enough to be deadly, especially in the fierce battle, when the opponent is said to be defenseless, then this battle can be over." Yun Ye said secretly.

If you also have such a strong mental attack, wouldn't it be easier to clean up?

But this can only be thought about, Yun Ye knows that it is the innate skill that others have awakened, and it is something that cannot be envied.

He took out the compressed biscuits that Fan Hua had prepared for himself from the system package, and gnawed on them with the mineral water, after a long fight, he needed to replenish a little physical strength.

It wasn't until he ate a whole bag of compressed biscuits that Yun Ye hiccuped with satisfaction, although this game didn't mean very good, but it was really full.

After eating and drinking, Yun Ye took out the gadget called "Energy Crystal Nucleus" from the system package and looked at it carefully.

The energy crystal nucleus is about the size of a fingernail, showing an irregular shape, like a ball but not a ball, with many edges and corners on the surface.

And its color is also very strange, the interior is a faint milky white, but in the middle, there are several black curved silk threads.

Those black silk threads always gave Yun Ye a very uncomfortable feeling.

At first, he thought that those silk threads were attachments on the surface, but after wiping them a few times, Yun Ye found that those black silk threads were not attached to the surface of the crystal nucleus, but were embedded in the inside of the crystal nucleus, as if they had existed in it since the birth of the crystal nucleus.

Moreover, the crystal nucleus is also very hard, no matter how Yun Ye kneades it, it is still the same, and it has not changed in the slightest.

After several kneading, Yun Ye's competitive spirit was also aroused, you are a fingernail-sized thing, is it possible that Lao Tzu can still take you and have no choice, right?

You must know that even if it is an iron ball of the same volume, it has to change its shape under Yun Ye's laborious kneading, and no matter how bad it is, it has to leave a few marks.

And this energy crystal nucleus is good, not to mention leaving a mark, especially not even a single hair left.

Boom! Yun Ye, who was angry, directly pulled out the long knife.

I'm going to see if you're really hard today!

Gray Lao said angrily in his mind, "I said that your kid took the wrong medicine today, and he actually won the battle with a small bead." ”

Yun Ye sneered, "I'm just curious, this thing was obviously pulled out of the mutant's head, and it was actually harder than the mutant's head." ”

"Nonsense, this energy crystal nucleus is the birthplace of the energy in the mutant's body, can it not be strong?"

"Where the energy originated?"

"The energy of the mutant body naturally cannot be generated out of thin air, and this energy crystal nucleus is the origin of the energy in his body, just like the power station in the human world, converting the rest of the different energies into electrical energy, so as to transport it to the human world, and the energy crystal nucleus of this mutant body is the same, which undertakes the three major functions of conversion, storage and transmission of energy in the body."

After such a reminder from the gray elder, Yun Ye finally understood that this thing was a small power station, as for why it was so hard.

Nonsense! Which of the most important large power stations in the country is not heavily guarded?

However, Yun Ye still had a question, "Why don't the several mutants I met before have this thing, and some of them are more powerful than this mutant, but why don't they have this thing?" ”

"You're asking me?"

Yun Ye glanced blankly when he heard this, thinking to himself that what Gray Lao said was not nonsense? It's just the two of us, I'm not asking you, am I asking God?

"Then you're asking the right question."

Hearing this, the gray old man's eyes lit up, and the dark said that the gray old man deserved to be the gray old man, and he didn't know much about it.

"Is this the reason......" Gray Lao deliberately lengthened his tone, which made Yun Ye anxious, and he couldn't wait to help Gray Lao say it immediately.

Almost just when Yun Ye was about to collapse, the gray old man said slowly. “…… Actually, I don't know. ”

“？？！！”

Yun Ye was so angry that he couldn't get up in one breath, and almost became the first host in history to be to death.

"Gray Lao, just say it when you have itchy skin!" Yun Ye gritted his teeth and roared.

"I've got itchy skin, can you get it?" The gray old man opened his mouth in a wandering manner, looking fearless.

Yun Ye choked, his face changed in a thousand ways, and in the end he could only change his face to unwillingness, and at the same time released a famous quote that resounded throughout the contemporary era.

"You wait for me!"

Yun Ye, who was half angry to death, decided not to rest, but held the long knife and embarked on the upgrade journey again.

He urgently needs to vent now, otherwise he is really afraid that the breath will hold in his heart and make him angry.

Yun Ye rushed out of the room in a rage, and there was a massacre in front of the mutants as he could see.

There was a roar, blood splattered on the ground, and the skull was in the air.

It wasn't until noon that Yun Ye stopped panting, and after a morning of fighting, he was under tremendous pressure, both physically and mentally.

However, the harvest is also huge, after such a morning of fighting, his experience has reached more than three-quarters of the way, as long as the mutant is killed at this rate in the afternoon, it is a proper thing to upgrade today.

Exhausted, he decided to take a break from the building and continue his path of upgrading in the afternoon.

Just as he was about to retreat, the floor suddenly shook, and although it was not loud, it was clear and audible.

Something is coming this way, and his keen perception tells Yun Ye that the thing that came this time is very dangerous!

Almost in the next second, a huge mutant appeared in Yun Ye's line of sight.

The mutant was extremely tall, almost three meters tall, and the exposed skin had gray muscles that bulged high, and it looked like a mutant with a lot of strength.

The body is majestic, with thick limbs, like a gorilla, and the bone fingers are sharp, like the edge of a knife.

"Mutant, level 6."

Looking at the mutant whose body was more than twice as large as himself, Yun Ye slowly breathed a sigh of relief, at least it was not a level 7 mutant.

With his current tired state, encountering a level 7 mutant is only to escape.

As for the level 6 mutant, Yun Ye was still a little confident.

Although he has self-confidence, Yun Ye does not dare to slack off. With a knife in both hands, you're ready to take on the onrushing mutants.

And the speed of the mutant on the opposite side also slowed down, and he seemed to find that the prey in front of him was not the same as the prey he had devoured before, more dangerous, dangerous...... Deadly enough!

However, he still couldn't stand the delicious sweetness emanating from Yun Ye's body, and the attraction of that taste was completely irresistible to him.

When approaching a certain distance, the mutant no longer hesitates, and its legs are slightly bent, its body leans forward, and its claws stand in front of its chest, like a tiger about to pounce.

Yun Ye clenched the long knife with both hands, his eyes narrowed slightly as he watched the mutant's movements, and his left leg slowly shrank back on the ground.

With a click, a soft sound, the floor under the mutant's feet shattered, and the huge body was like a cannonball out of the chamber and headed towards Yun Ye.

That speed was far superior to that of other mutants, and it was almost the opposite of his massive size.

Yun Ye was secretly frightened by the speed of the mutant eruption, without the slightest hesitation, he also used all his strength, kicked hard with his left foot, and the long knife was the edge, rushing out towards the front.

One person and one monster were like two disemboweled cannonballs, passing by, but in an instant, a large patch of scarlet blood bloomed out.

Yun Ye snorted, only to feel a hot pain in his chest, and three deep scars appeared on his chest, as for the mutant, the injury was much heavier than Yun Ye.

The mutant's arms were broken from the roots, and the scarlet blood flowed out like a leaky water pipe, and it couldn't be stopped.

"What a sharp bone blade!"

Yun Ye grinned, "It's a pity, it's broken!" ”

Yun Ye had planned to exchange injuries for injuries from the beginning, he was physically and mentally exhausted now, and he definitely couldn't fight for a long time, once he got entangled with the mutants, maybe he would attract the rest of the mutants, and then there would be a big trouble.

Moreover, Yun Ye used "Swiftness" at the moment when the two were about to touch, which allowed him to escape from the mutant's claws, and also cut off one of the mutants' claws.

Horizontal knife, sprint. This time, Yun Ye was the first to attack, and he had to slash this mutant before the time was up!

The mutant, on the other hand, lost the momentum of taking the lead before, and now, the moment he saw Yun Ye rushing towards him, there was an emotion called fear surging up from his heart.

For the first time, a look of fear appeared on the hideous face that was cast like gray and white bone, and he no longer rushed towards Yun Ye, but turned around and wanted to escape.

It's a pity that Yun Ye, who was blessed by swiftness, just came behind the mutant in the blink of an eye.

The pitch-black blade was crossed by Yun Ye in front of him, and there was a cold chill coming out of the tip of the knife, pointing directly at the back of the mutant's head.

The mutant seemed to notice something, turned his head in horror, and raised his remaining arm to resist the blade stabbed by Yun Ye.

Unfortunately, after all, it was a little bit worse, and the sharp tip of the knife, under the frightened gaze of the mutant, pierced directly into his eyeballs, and then burst into his brain.

The mutant screamed, then fell to the ground in convulsions.

"Kill a level 6 mutant and gain 45 XP."

Looking at the corpse of the mutant at the end, Yun Ye shook his head, after this fight with the mutant, Yun Ye understood a truth.

When you confront the enemy, whichever side is scared first will no longer have the initiative, and there is a high chance that you will be killed on the spot.

This mutant is the best example of this.

The brave wins when they meet on a narrow road, this sentence is not unreasonable.