On the way, Duan Fei couldn't help recalling the fierce battle last night and a mysterious transaction afterwards.

The evolutionary effect of the evolutionary key on human beings is to make the body hard, enhance the power and restore the soul. For mutant animals and zombies, in addition to the above three points, there is one more important and most attractive point - gene core evolution. The evolutionary power can raise the gene core in the monster to a super level, Thus, the mutant beast or zombie can adapt to the powerful effect brought by this evolution from the inside to the outside of the body, but at the same time, the evolutionary effect produced by this incomplete evolutionary key is also not perfect. After a certain time, this evolutionary effect will disappear, allowing the monster or zombie to return to the original state, the original level and the original appearance, This is the same even if the effect of evolution is applied to people.

But recovery belongs to recovery. The gene nuclei in mutant animals and zombies have really evolved. This evolution is not from internal changes, but forced evolution by external evolutionary forces, because the body and soul are not in this class. If they are forced to evolve rashly, the body will have phagocytosis and adverse reactions. However, this side effect is still secondary to humans. What really works is the gene nucleus in the mutant animal. In Duan Fei's previous life, there was a vigorous tide of evolution caused by an advanced evolutionist. In many experiments, the advanced evolutionist once tried to pour evolutionary power into a wild mutant animal, Let its body and soul evolve.

Because a small zombie of Grade E was selected, it didn't play a threat at that time. After killing the zombie that got the power of evolution, the gene core was taken out. As expected, the gene core remained in the state of evolution, that is, the model of grade improvement. At the same time, the senior evolutionist reached several conclusions after more similar experiments.

The gene nucleus in the mutant animal affected by the evolutionary force will be improved. If it is killed when the evolutionary effect still exists, it is undoubtedly to preserve the evolutionary force in its body and get an evolved gene nucleus. However, if the gene nucleus is taken after the evolutionary effect dissipates in the past, That will only get a mutated beast gene core before accepting the power of evolution.

Relying on these conclusions, the human base where the senior evolutionist is located frantically sent the strong to plunder the relatively weak mutant animals that evolved into senior monsters in a short time after the increase of evolutionary power. The human base obtained 23 A-level gene nuclei, hundreds of B-level gene nuclei and three extremely valuable S-level gene nuclei in less than a month. The base, which made a lot of money, soon became the target of public criticism, attracted the attention of all forces, and accelerated the time of annihilation.

Yesterday's Mermaid mutant beast, blessed by the last and largest evolutionary force from the fragment of the evolutionary key, successfully evolved into a monster with medium-term strength of class A. unfortunately, it didn't understand what ability its body had except increased hardness, so it was half killed by Duan Fei's three power changes. In this way, even if it has evolved, it has no effect. In front of Duan Fei, even the arrival of the later stage of class a can only be beaten.

After killing the mutant Mermaid, Duan Fei not only absorbed all its life energy and converted it into his own energy, but also accidentally harvested a class a mutant gene core.

With the intervention of Duan Fei's bug, the process of the world has been accelerated a lot, but the most advanced mutant beast known to mankind is still the peak of class A. as for class s, there is still no one in the world so far. Because Duan Fei was still in the late stage when he died in his previous life, that is, when a number of bases were established, the greatest enemy of mankind was only mutant animals and a small insignificant zombie. There will be no major changes or changes in the future. Duan Fei really doesn't know.

However, one thing is certain that in the later period, s level is not the top level. It is rumored that the most powerful awakened warrior in human forces at that time is a peerless strong man whose strength exceeds s level.

Duan Fei helped Tianwang destroy the biggest enemy of Dongfang Branch this time, and his contribution value increased to another level in an instant. Last night after returning to the base, after the celebration banquet, Duan Fei found Fengya alone.

According to the truth, Duan Fei got his own gene core by killing the mutant beast, but considering that this is a class a water system mutant beast, and most of the awakened people in Yanhuang city and Star Alliance are still class C, even a handful of class B. now he only has to put it back. Since he learned that Fengya knows so many secrets, Duan Fei simply made a secret deal with him. He took the A-level gene core as the exchange object, while Fengya took the evolutionary power in the fragments of two-thirds of the evolutionary keys in his body as the price.

Pour a large part of the evolutionary power into the third evolutionary key taken from the mermaid mutant animal body on Duan Fei's hand.

One is the fragment of evolution key and the other is the gene core of class a mutant beast. In the face of temptation, Fengya chose the latter. It's not that he doesn't want the remaining one-third of the fragment of evolution key, but that their Oriental branch base is too lack of advanced mutant beast gene core. After this battle, Fengya understands that relying on these five cadres is not enough, In the face of other mutant beasts hidden in the sea, the defense line of their base is like nothing. As long as these cadres who can fight are trapped, it will not be far from the time point of destroying the base of Dongfang Branch.

Even if Fengya has its own fragments of evolution keys, it also has no attack effect. If it's face-to-face, it's still a dead end except a dead end.

What's more, the evolutionary power of the evolutionary key fragment in the body is still sufficient. Transferring part of it to another fragment that has been exhausted in the past also has another advantage for Fengya. It can sell Duanfei a great favor. Duanfei's strength is obvious to all. They killed such a large number of mutant beasts in an instant with the power of one person, If you don't use the God of war to describe it, you really can't think of any words.

Although Duan Fei didn't find his sister in this line, he was satisfied to know that his sister was still alive. Not only that, he also got a fragment of evolution key with unlimited potential.