Yu Zhenxing's night vision is not good, and she can't see Lin Ziyi's appearance clearly, but the girl's intuition makes her feel that this girl seems to be very beautiful.

Lin Ziyi did not absorb the energy particles in the surrounding air to recover the injury, but did not want to absorb the energy particles to heal herself, but as a martial artist of the eightfold Yuan Force, once she absorbed the energy particles, the scene was probably worth a thousand martial artists in the Gathering Force Realm practicing the basic boxing technique at the same time, and the natural white-clothed young man in the vicinity would definitely be able to sense the fluctuations of the energy particles and find his position, so Lin Ziyi could only use the only Yuan Force to maintain the injury from worsening.

In fact, just as Lin Ziyi expected, the young man in white was standing in mid-air at this time, constantly sensing the energy particles around him, and feeling the slightest fluctuation around him. Although his strength has dropped to the ninth level of Huiyuan, he is still in the Three Seas Realm, so he can still do it in the air.

"Where did this Lin Ziyi flee to?" The young man in white frowned.

It's a pity that this place is swept by the electromagnetic pulse, and some high-tech instruments can't be used, otherwise you can use high-tech to find Lin Ziyi's whereabouts.

The young man in white was silent for a while, then took out a copper whistle from his body and blew it. This brass whistle is not a sound, but a human inaudible ultrasound, and in an instant, the ripples are transmitted in all directions, transmitting a long distance, and it is a special tool used to call beasts.

In a short time, the sound of Suo was heard in the forest, and two creatures appeared on the black, dry ground.

Seeing these two creatures, the eyes of the young man in white showed a trace of coldness: "Lin Ziyi, where are you fleeing this time?" ”

In the dark waterless space, Xu Fei remembered the scene of Shicai, and became curious about the person who chased and killed Lin Ziyi, and asked, "Who was you fighting just now?" ”

The reason why Naturalism appeared was actually caused by human beings themselves, and it was something that should not have been known to ordinary people, after all, it was not a glorious thing.

Lin Ziyi glanced at Xu Fei and found that his eyes were burning, knowing that the conversation just now was likely to be heard by him, she originally wanted to hide it, she gave up the idea of concealing it, and said, "He is a natural person!" ”

"Natural?"

"Naturalism is an organization that is separated from the human world. Although it is a human organization, it is essentially an organization that is the opposite of human beings. Lin Ziyi said.

"A human organization that is in opposition to humans? Why? Xu Fei was very puzzled, since they are all human beings, why don't they work together for the survival of human beings, but instead oppose human society?

"It's a long story." Lin Ziyi didn't directly say the origin of the naturalistic school, but asked, "You should know about the catastrophe more than a hundred years ago, right?" ”

"Hmm." Xu Fei said: "The interior of the earth is wrapped in a layer of bastile ore with extremely high purity and high energy level, and at that time, the underground bastile mine exploded, and powerful and violent energy flowed underground, detonating a large amount of baitelite, which would lead to this explosion. The energy of this explosion directly led to strong natural disasters such as earthquakes, tsunamis, typhoons, and a large number of violent energy particles that were ejected, changing the ecological structure of the earth. ”

After a pause, Xu Fei said: "That's what is recorded in the book. ”

Lin Ziyi said: "That's the case, but this is the result, not the cause." Have you ever wondered why a balite mine with extremely high purity, energy level, and stability explodes? ”

"The stability of bassarite is extremely high, even a small piece is enough for a hundred households to use for a year, and it takes an ultra-high temperature to make the energy inside it unstable." Yu Zhenxing is also a scholar herself, very smart, and seems to have thought of something.

"That's right. It requires an ultra-high temperature, which is not comparable to the tens of millions of degrees Celsius that makes the deuterium fusion reaction at every turn, but it also requires an ultra-high temperature of more than 100,000 degrees. If this temperature had not been detonated by a human being or in a laboratory, it would have been difficult for such a high temperature to exist in the natural world of the earth. ”

Seeing the doubts on Xu Fei and Yu Zhenxing's faces, Lin Ziyi solved the mystery: "The reason is that at that time, together with the Xuanjing Mine, there were also giant beasts sleeping in the mantle. ”

"Behemoth!" Xu Fei remembered at this time, and it was recorded in the book that when the catastrophe occurred, some unknown fierce beasts emerged from the ground.

"Could it be that the explosion was caused by a behemoth?" Xu Fei was shocked.

"It's caused by a giant beast. In the aftermath of the explosion, the Earth's ecosystem was completely transformed. Lin Ziyi said slowly: "More than a hundred years ago, human beings had just built a base city, and a new food chain had not yet been formed, many mutated creatures were fighting wildly, and powerful creatures naturally had a strong sense of territory, and the area of the base city was not small and there were many humans in it, so it also led to many mutant creatures frantically attacking the base city." In order to gain a foothold in this chaotic world and fight against those mutated creatures, a large number of warriors and ordinary people die every day. ”

Xu Fei had experienced the attack of the scorching firebird, and he could fully imagine how tragic the battle between humans and those mutated creatures was more than a hundred years ago.

"I've always wondered how humans survived when they were at their weakest in the early days of the catastrophe, when there weren't many mutated creatures compared to now, but all of them were very strong?" Yu Zhenxing asked.

Xu Fei is also a little strange, according to reason, the number of organisms in the entire earth is not more than trillions, and the number of mutated creatures produced at that time should also be a lot, in such an environment, how can human beings survive and grow? By weapons? Ordinary weapons are not good at all, not to mention anything else, let's just say that ordinary red-level mutant creatures, even armor-piercing bullets may not be able to penetrate their skin, let alone more advanced creatures.

"At that time, human beings had not yet risen, and now these titled powerhouses are still very weak, and they are indeed unable to resist in the face of some powerful creatures, but in a critical period, two incomparably powerful beasts actually stood on the side of humans."

"Beasts are on the side of humans?" Xu Fei was stunned. Not only Xu Fei, but even Yu Zhenxing was incredible, in their impression, the fierce beast should be like the scorching firebird.

"What? Can't believe it? Lin Ziyi said: "Actually, I can't believe it, but that's the case, one of the two fierce beasts is called 'Rushing Leopard', and the other is 'Water Cloud Butterfly'." ”

"'Rushing Leopard' and 'Water Cloud Butterfly'?"

Xu Fei secretly wrote down the names of the two fierce beasts. Being able to stand on the side of humans shows that these two beasts should have extremely high intelligence and a good impression of humans. If it was possible, Xu Fei really wanted to meet these two.

"This 'Rushing Leopard' has the talent of controlling thunder and lightning, and it was a green-level fierce beast more than a hundred years ago, when it used the thunder prison cage to envelop the small base city, so that people could have a chance to breathe, that 'Water Cloud Butterfly' was a blue-level fierce beast at that time, good at spiritual attacks, and flew all over the six continents in a week, arranging spiritual illusions in each base city, and protecting human beings." Lin Ziyi suddenly sighed at this time and said, "It's just that although they have helped us humans, they have also laid the root of the curse. ”

"Is it naturalistic?"