"Fugui seems to want these black crystal fragments very much, which means that this thing is beneficial to it or the mutant creatures." Gao Han came to this conclusion after thinking about it.

Zhongli Tingzhou said: "But this black crystal fragment is not entirely beneficial to them."

"That's right." Gao Han agreed very much. "Is it possible that while improving their strength, it will also affect their emotions, just like practicing martial arts and becoming obsessed."

"Let's find a few more mutant creatures and give it a try." Zhongli Tingzhou made a prompt decision.

Instead of making random guesses here, it is better to prove it through practice.

Gao Han had no objection, but he would feel uneasy until he found out the truth, and he didn't dare to give these things to Fugui.

Zhongli Tingzhou left for a while, and a few minutes later he captured a few mutant creatures.

Gao Han was afraid that the aura of the black crystal fragments would attract other mutant creatures, so he specially set up a formation array around it that could isolate the aura, and then opened the box.

As soon as the lid of the box was opened, the mutant creatures that were trembling with fear suddenly began to dig the ground and became restless.

His eyes gradually turned red, staring at the box with desire, yet also with some struggle.

But in less than a minute, these mutant creatures abandoned their fear, their eyes turned completely blood red, and they roared anxiously. If they had not been suppressed by them, they would have pounced on them by now.

It turns out that these black crystal fragments do have an effect on mutant creatures.

This impact has both good and bad effects.

Gao Han closed the box and thought for a moment, "The strength of these mutants is not too high. Could it be that the bad side has no effect on the mutants with strong strength?"

Zhongli Tingzhou said indifferently: "Want to give it a try?"

"Try." Gao Han always felt that this thing might have something to do with the existence of mutant creatures and the main disaster area.

"Then let's do it one by one, starting with level nine." Zhongli Tingzhou said as he killed several mutant creatures he had just captured.

Intelligent mutated creatures can be found almost everywhere in the main disaster area, and we must not let them run away to tip off the enemy.

Based on the principle of proximity, they chose the territory of a level nine mutant creature.

There are no particularly high-level mutant creatures nearby, so if something really happened, it wouldn't attract them.

This level nine mutant creature occupied a large territory alone, which was half the size of Black Pool Ridge, but it did not have many subordinates.

The two of them broke into each other's lair in no time and captured the dozing mutant creature without much effort.

Level nine mutant creatures cannot speak yet, so they usually have to be at least level ten.

Gao Han didn't let Fugui communicate with it, but directly used the black crystal fragments to test it.

After a moment of confusion, this level nine mutant creature quickly became greedy and covetous. They all felt its restless intention.

Its eyes occasionally flashed red, but unlike Fugui and other low-level mutant creatures, it did not lose its mind after a while.

The struggle in its eyes was not that obvious, and it seemed to be more resistant to these negative factors. However, one thing was the same, which was its desire for the black crystal fragments.

Zhongli Tingzhou killed it, and the two began to discuss.

"It turns out that the stronger the strength, the greater the resistance to the black crystal fragments." Gao Han looked at Fugui speechlessly.

Zhongli Tingzhou was not as subtle as him, and directly kicked Fugui's butt, "You are so weak, not even as good as a level nine mutant creature. It's really shameful. How dare you follow me."

Fugui looked like he was struck by lightning, and then he got furious. How am I weak?

Gao Han sighed. He had previously thought that even though Fugui was slightly weaker in strength, his bloodline might be relatively high, because its detection of mineral veins was not like that of ordinary mutant creatures. He didn't expect that he was overthinking.

Zhongli Tingzhou chuckled, "If you're not weak, why didn't its eyes turn red? Your eyes turned red very quickly. Do you know why your father pressed you to the ground and rubbed you? It's because you're weak!"

Hey, is this how you rub it on the ground? Gao Han thought.

Fugui blinked, then rolled his eyes guiltily.

It seemed like... it really was a loss of a very short period of memory.

Zhongli Tingzhou kicked it again and asked it to look at the box in his hand. "Can this thing improve your strength?"

His force was not strong and Fugui was not knocked down by him. He just shook his body a little and nodded reluctantly, continuing to immerse himself in his own weak and sad world.

"More useful than crystal cores and spirit beads?" Zhongli Tingzhou asked again.

Fugui continued to nod. He didn't know why it was useful, but he just had a special feeling of wanting it, just like the temptation of roasted spiritual meat to him. He couldn't help but want to rush over and take a bite.

Gao Han pondered for a moment, "Crystal cores and spirit beads are used to remind strength. For mutant creatures, strength is the most important thing, so this thing should also be used to increase strength. It may be more beneficial, but isn't it still a little short?"

"Didn't you notice?" Zhongli Tingzhou suddenly said.

Gao Han frowned and asked, "What did you find?"

Zhongli Tingzhou said: "The closer you get to the depths of the main disaster area, the more intelligent mutant creatures there are. Perhaps, the closer you get to the depths of the main disaster area, the stronger the mutant creatures are and the higher their intelligence is."

An idea suddenly flashed through Gao Han's mind, "We got these black crystal fragments deep in the main disaster area."

Zhongli Tingzhou nodded and said comfortably: "Of course, this is just our guess. Whether it is true or not remains to be confirmed."

"If this is true, it can explain all phenomena." Gao Han suddenly felt that he was getting closer and closer to the truth about the mutation in the main disaster area.

"The fittest survive and the unfit are eliminated." Interesting, Zhongli Tingzhou already understood.

Those mutant creatures that lose their minds when encountering black crystal fragments should be eliminated.

They could not withstand the temptation of the black crystal fragments. In the process of devouring the black crystal fragments, their sanity collapsed and they eventually became irrational beasts. Only by successfully surviving this level can they go further, just like the advanced mutant creatures in the Black Water Pond.

Gao Han glanced at Fugui, who was clinging to the box and was reluctant to come down. "What should we do with these black crystal fragments?"

Zhongli Tingzhou knew he was talking about Fugui, "If it really wants to eat, let it eat. If it can't, it means it's not suitable."

Gao Han sighed, "It's your son."

Is it okay to say this?

"No, it could also be my food," Zhongli Tingzhou stared at it and licked his lips. "After raising it for these days, it should be quite fat."

Fugui's whole body trembled like a wave, and his hair spread out in a visible scene.

Oh shit, it turns out my previous host has always been eyeing my body!

Gao Han knew that Zhongli Tingzhou was joking, but he was amused by Fugui's reaction. Is he really that scared?

"Okay, stop scaring it. We can't protect it forever. It has to grow up on its own and walk its own path in the future."

Zhongli Tingzhou looked at him in surprise, "I thought you were going to protect it."

After all, Gao Han usually protects it very much. On the surface, it's a pet, but in fact, he treats it like a son and has a deep affection for it. Sometimes even he is jealous and wishes he could find a chance to secretly abandon this cheap son.

Fugui suddenly sneezed, and suddenly felt a chill that made him shiver.

"Even if it really is my son, I won't keep it like this." Flowers in a greenhouse will wither sooner or later, so it's better not to keep them.

Zhongli Tingzhou smiled. He liked this kind of Gao Han.

Gao Han didn't care about his current thoughts. Since he had decided to give it to Fugui, he would not regret it. However, he had to say some things in advance.

Gao Han lifted Fugui onto his knees and looked at him seriously. "Fugui, I can give you these black crystal fragments, but if you can't make it and end up becoming a mutant with only the thoughts of a beast, your father and I may kill you to prevent you from being caught by others in the future."

Fugui shuddered and cried, wondering why the host suddenly became so cold-blooded. It thought only the previous host was like this.

"If you agree, I'll give it to you. If you don't agree, you can pretend that nothing happened and you'll still be our good son." Gao Han gave it the right to choose.

Fugui was silent for a moment, holding a box very firmly.

It also wants to become stronger. It doesn't want to have to hide in the host's pocket every time.

It wants to be as powerful as those advanced mutant creatures today, and it also wants to protect its host like its previous host.

Gao Han patted its head with satisfaction, "Well, you are indeed your father's good son, you have backbone."

Fugui immediately straightened his chest, of course!

"It is better to do it now than to wait for a better day. Let's devour this level nine mutant creature in its territory." Zhongli Tingzhou interrupted the father-son affection in a cold-blooded manner.

The main disaster area has good innate conditions, and Gao Han has no objection. "Let's try one piece first and see if it lasts. If not, try a few more pieces."

They still have to go find the blue tree and can't delay too long.

The two entered the territory of the ninth-level mutant creatures and killed all the mutant creatures nearby before going to their nest and taking out the black crystal fragments.

Fugui found a place with water, took a bath, and cleaned himself up before sitting in front of the black crystal fragments.

Perhaps because of the threat from Gao Han ahead, it no longer lost its mind quickly when faced with the tempting black crystal fragment again. After a while, it swallowed the black crystal fragment.

Gao Han watched it for a while and saw it rolling around in pain. The hair that had just been washed turned into mud in a short while.

"So much trouble." Zhongli Tingzhou laughed.

Gao Han glanced at him and said, "Don't talk about half a catty, I learned it all from you."

Zhongli Tingzhou said dissatisfiedly: "How can I be compared with it."

"I was wrong. You can't be compared with it. You are even worse than it." Gao Han bravely admitted his mistake.

The two of them were joking around while paying attention to Fugui's situation.

It looked painful, but if this was the only way, they couldn't share the burden.

Time passed quickly, and they felt that the chaotic energy in Fugui had stabilized in less than a day.

Of course, due to their lack of experience, if they knew that other advanced mutant creatures absorb the energy of the black crystal fragments by holding them in their hands and absorbing them bit by bit, they might pick Fugui up and beat him up.

But now neither of them felt that there was anything wrong.

Zhongli Tingzhou doesn't care how it absorbs it.

Gao Han often saw Fugui swallowing the spirit beads and crystal cores in one gulp, so he didn't think anything was wrong.

When it was over, only half a day had passed, and Fugui looked like he had just been fished out of a mud pond.

Its eyes were bright, without any trace of irritability.

It crawled over and tried to rub against Gao Han, but Gao Han subconsciously used his spiritual weapon to push it away, "Don't come over, you're too dirty."

Fu Guigang didn't understand what was going on, but when he heard that the host disliked him, he was struck by lightning. He wanted to say something about himself being dirty, but when he lowered his head, he saw that all his shiny black hair was gone, and his body was emitting a foul stench. He almost vomited.

It is a clean baby, so how could it smell so bad? Fugui, who was dizzy from the smell, stumbled to find water and dived into the water. A layer of black dirt immediately floated on the surface of the water.

Five minutes later, Fugui floated out of the water, his body finally clean.

It then rubbed itself smooth and shiny before returning to Gao Han.

She puffed out her chest and proudly showed him her strength.

The Silver Lizard is not a combat-oriented creature, but its cultivation can be improved.

Its only advantage in the past was its ability to find minerals, and it was relatively fast. Otherwise, it was useless. Someone could easily step on it and kill it. It was worse than an ordinary third or fourth level mutant creature.

Now, just by eating a piece of black crystal fragment, his strength has increased from level four to level six.

Gao Han discovered that its fur had become much harder and was no longer as soft as before.