"A piece of black crystal fragment can upgrade two levels. It is indeed better than spirit beads and crystal cores." Gao Han said with emotion.

Zhongli Tingzhou criticized him, "It has eaten so much before, but it has not improved. If you give it a few more pieces, I guess its improvement will only get slower and slower. What you should ask is not its strength, because you can't count on it anyway, but its IQ. It seems that it is still as stupid as before."

Gao Han glanced at Fugui, who was a little shocked. Although what he said made some sense...

"It doesn't matter if its IQ is raised or not, as long as it can speak."

He won't have to guess what it says anymore.

Although I'm used to it, it's still a mental exercise.

Fugui looked at his former host proudly and said, "Did you hear that? My host doesn't mind that I eat a lot."

Zhongli Tingzhou chuckled, "Your IQ is looked down upon, why are you still so proud?"

Gao Han coughed lightly, and before Fugui could get too shocked, he hurriedly asked, "Fugui, can you have another piece now?"

Fugui's resentment disappeared immediately and he nodded vigorously, saying that he could eat all the black crystal fragments and he had no objection.

Gao Han expressed his opinion that he did not intend to eat it all.

Another piece was given, and this time Fugui's resistance to the black crystal fragments seemed to be a little stronger.

While it was absorbing the black crystal fragments, Gao Han was not idle either.

In his hand was a piece of black crystal fragment.

This thing has a huge attraction to mutant creatures, but strangely, it has no effect on them, except that they can feel the energy inside.

"Would you like to try it?" he asked.

Zhongli Tingzhou said seriously, "It's better not to. This kind of black crystal fragment is not particularly difficult to obtain. The government should have noticed it a long time ago and may be studying it. If the soul refiners can absorb it, my family would have received the news a long time ago and would not have kept it secret."

That’s true. Gao Han was afraid of something happening, so he didn’t dare to really try it.

"I have an idea. If mutant creatures can be subdued like Fugui, then these black crystal fragments should be useful, right?"

"Oh, as long as you are not afraid of being attacked by your own pet." Zhongli Tingzhou shrugged. There are many humans who have this idea.

Fugui is an exception. This guy looks very smart, but he is actually a fool and a foodie.

The two men had never tamed it, so it stuck to them tightly, afraid that they would abandon it.

"But..." Zhongli Tingzhou suddenly said, "It's not like there haven't been any soul cultivators who have tried. If they can really tame a powerful mutant creature, or train it from a young age, it's like having an extra creature with the same fighting power. If you can think of it, so can others."

His words reminded Gao Han of some uncomfortable things.

In the future world where his previous generation lived, there were many such studies that developed out of desire.

"But there is no 100% certainty. If you try to tame a mutant with brute force or move it with emotion, you will be attacked sooner or later, unless..."

Gao Han paused when he heard him, "Unless what?"

"Unless there is some way to make the mutant creatures completely obey your orders and unable to disobey, such as..." Zhongli Tingzhou raised his mouth mysteriously, "a contract or something."

"Is there such a thing?" Gao Han had never found it in the Yayoi Ring, unless it was in the blocked gray grid, but he still didn't know how to unlock it.

"Who knows." Zhongli Tingzhou shrugged his shoulders and ignored it after throwing out a temptation.

Fortunately, Gao Han has no ambitions or desires, otherwise he might really give it a try.

Taming mutant creatures and making them obey one's orders is a move that is enough to change the future.

…

After the human strongmen left, Black Pool Ridge became completely quiet.

Shenlan, Wanyu and others were worried that the human strongmen would come back, so they stayed for half a day. Only after they were sure that they had left did they leave one after another.

Wan Yu, who had returned from being an ally to being an opponent, rarely did he leave without mocking Hei Jiao.

"You are very different today." Shenlan joked to him as he left.

Wan Yu snorted, "He has suffered heavy losses now, and his territory has been destroyed. If I taunt him, he will get excited and fight me to death. I won't bother to pay attention to him."

Deep Blue smiled.

The black dragon transformed into a human form, and the dark clouds that had been hanging over the Black Water Pond slowly dissipated. The sunlight penetrated directly and fell on the devastated Black Pond Ridge.

Heitian, dressed in a black robe, had a gloomy face and looked a little embarrassed. He released waves of negative energy from his body, making his men afraid to approach him.

"Sir." The deep-sea monster had to come over, his voice hoarse.

"Immediately send someone to tidy up Heitan Ridge and restore it to its original state as soon as possible." Heitian's voice was filled with suppressed anger. After he finished speaking, he threw down his sleeves fiercely and jumped into the black water pool.

After giving instructions to his men, the deep-sea monster also jumped in.

The bottom of the pool was very calm, and everyone was afraid to breathe because of the black dragon's anger.

The huge and magnificent castle sank quietly under the pool. The glowing night pearls were inlaid in rows on the castle, emitting a faint light. It looked like a magnificent castle. No one could tell that a battle had taken place here and that the castle had been robbed.

"Sir!" The deep-sea monster saw Lord Heitian rushing straight to the treasure house as soon as he came down, and hurriedly called him from behind.

Heitian didn't even look back and went straight to the outside of the treasury.

The deep-sea monster stopped at the door.

After a while, the roar of the black dragon was heard again above Heitan Ridge.

Heitian didn't care about the crystal core or gold being stolen. What he cared about most were the five small boxes containing the black crystal fragments. As a result, all of them were stolen without exception.

"Sir, please don't hurt yourself." The deep-sea monster saw Lord Heitian spit out a mouthful of black blood and immediately said with concern.

Heitian swallowed the remaining blood, veins popping out on his forehead, "Find those two humans, I will tear them into pieces with my own hands."

The deep-sea monster did not persuade them. He guessed that the two people should have left the disaster area. However, in order to calm the anger of the master, he immediately agreed, "I will send someone to find them right away. My lord, the most important thing for you now is to recover from your injuries so that you can take revenge yourself."

The strength of that human warrior was very strange. When he was at the bottom of the pool, he was clearly not at the first-class level yet, but in less than a day, he had changed.

"Even if you don't tell me, I know it." Heitian glanced at him with his cold vertical pupils. "This time, you failed to defend the city. I should have held you responsible, but considering the lack of manpower, I can refrain from punishing you. You can make up for your crime by yourself."

"Thank you, sir, for giving me a chance to atone for my sins." The deep-sea monster said without complaint.

…

On the other side, Fugui ate two pieces of black crystal fragments in succession and could not eat any more.

Gao Han felt that the energy in its body was about to explode, so he didn't dare let it eat anymore.

Fugui's stomach was so full that he was getting very irritable. His claws rubbed against a stone, making a sharp sound.

Gao Han found the sound particularly harsh, so he chopped down a tree and used the trunk to sharpen the claws. Finally, the harsh sound was stopped.

With something to vent his emotions on, Fugui was no longer so anxious, and the blood red in his eyes did not appear as frequently. After a day, he finally calmed down.

Gao Han touched its fur and found it a bit prickly, so he threw it to Zhongli Tingzhou.

"Son, your father dislikes you." Zhongli Tingzhou said gloatingly.

Fuguicai didn't believe his nonsense and turned his butt against him.

The host is very nice to it and will not dislike it.

Zhongli Tingzhou snorted, "Time will tell."

Gao Han coughed lightly, "Okay, stop playing, let's go find the blue-skinned tree next."

Now there is only this one thing left to do, and the rest will be much easier.

"I have a solution." Zhongli Tingzhou said.

"What can we do?" Many places in the main disaster area are suitable for the growth of blue-skinned trees. Even if some characteristics of the blue-skinned trees are known, it is still difficult to find them. Gao Han has already prepared for a long struggle.

Zhongli Tingzhou smiled mysteriously, "What is most abundant in the main disaster area?"

Gao Han thought for a second and said, "Tree."

Zhongli Tingzhou immediately showed a 'not fun' expression, "Boyfriend, please be serious."

It was rare that their positions were suddenly reversed. Gao Han shrugged and said, "Which eye of yours can tell that I'm not serious?"

"I can see it with both of my eyes." Zhongli Tingzhou compared his eyes.

Gao Han remained calm: "I only saw eye boogers."

Zhongli Tingzhou suddenly came up to him, so close that his face was almost touching, and said expectantly: "Then help me pick out the eye mucus."

Gao Han pushed his face away expressionlessly, "You win. Let's get down to business. In addition to trees, there are also mutant creatures in the main disaster area."

Zhongli Tingzhou, on the other hand, looked unsatisfied, "Why do you give up so easily?"

Gao Han said, "Maybe he is immune to it."

Zhongli Tingzhou rolled his eyes and finally landed on his chest, "You're immune so quickly, if I do other things a few more times in the future, will you also be immune?"

Gao Han noticed that his eyes fell on his chest, and immediately remembered the last time he took advantage of him in the water.

It would have been fine if he didn't think about it. Once he thought about it, he couldn't help but recall the feeling at that time. His face suddenly darkened and he threatened: "Are you going to talk about business or not?"

Zhongli Tingzhou curled his lips and said, "Just tell me. Find a few more mutant creatures and ask your son. He will eventually find news about the blue-skinned tree."

This is a good idea.

"Otherwise, you can let your son sneak into the territory of some mutant creatures and let him go in to investigate. After all, they are all mutant creatures and run fast, so their lives will not be in danger."

Gao Han said: "This is somewhat dangerous, let's try the first method first."

Both of them were very mobile. They walked to places they had never been to before and caught some mutant creatures on the way to ask questions.

Gao Han drew a picture of a blue-skinned tree. Fugui didn't need to waste time, he just showed the picture to the mutant creature and he would understand.

After walking for a long time, they didn't encounter any mutant creature that knew about the blue-skinned tree.

During the break, they discussed it again, wondering if they were going in the wrong direction.

"The blue-skinned tree likes dryness. There is the least water source in this direction, unless the blue-skinned tree is in a deeper place." Gao Han said to himself. Although it was called a discussion, he was actually the only one talking.

Zhongli Tingzhou didn't care at all. He was only responsible for following along and doing the physical work of catching the mutant creatures.

"It seems we have to keep moving forward." Gao Han concluded.

"What is that?" Zhongli Tingzhou suddenly asked.

Gao Han followed his line of sight and saw a group of mutant creatures running towards him from the distant hillside.

There was no murderous intent and it was obvious that he had not noticed their presence.

There are about a dozen mutated land creatures with sharp edges and corners. The weakest is level six and the strongest is level nine.

The two mutant creatures running in the front made sounds similar to communication from time to time.

"Fugui, what are they talking about?" Gao Han asked his son after they ran into the dense jungle, and at the same time took out a handful of spirit beads and gave them to him.

Fugui tilted his head and thought for a moment, then jumped down the tree and found a larger stone.

The head was as big as an adult's and it was kicked down under the tree.

The spirit beads were divided into two groups, and a few of them were taken out separately. Fugui put them together and chattered for a while, and then they went back to report.

"You mean, there are two groups of mutant creatures who are planning to unite to deal with what this big stone represents?" Gao Han repeated.

Fugui nodded happily.

"Does this big rock represent another advanced mutant creature?"

Fugui shook his head again and pointed his claws at him and Zhongli Tingzhou.

"To deal with us?" Gao Han guessed.

Fugui shook his head again, still pointing at them.

Zhongli Tingzhou said to Gao Han: "Teach it to write next time, or let it improve its strength as quickly as possible until it can speak." He was too lazy to guess.

Both methods are not easy, and he was not the one who taught it. Gao Han ignored him. Seeing Fugui's anxious look, he suddenly had an idea.

"The big rock, could it be a human city?"

Fugui immediately danced with joy.