"I see, I understand why this is the case. This is the mutant bird is taking revenge at this time, it must be like this, I can't guess wrong, it must be the situation I said, the mutant bird has a preliminary wisdom, has the concept of revenge, and last year, North America poisoned and killed most of the mutant birds, and the mutant bird began to retaliate after noticing this. In the research institute in Yanjing City, a zoologist was shouting loudly.

If you want to know why the mutant bird attacks the city, you also need to know the logic of the mutant bird's behavior, and this matter is generally studied by animal behavior, and the logic behind the animal's behavior can be known by studying the animal's behavior.

Now Yanjing is already in a state of panic, and people have also heard the news that all the cities outside the gate have fallen, this kind of thing is completely unimaginable, but it is just a day, and the big cities outside the gate have all been attacked by mutant birds and mutant beasts, this kind of thing is a fairy tale may not be able to deceive children, but this kind of thing does appear in front of everyone's eyes, I have to believe it.

But at this time, an assistant asked: "Teacher, but it is not us who put the virus, it is the bacteria and viruses released by the people of North America, and the mutant bird should not look for us even if it wants to retaliate?" ”

The zoologist looked at his student and said helplessly, "What are you talking about?" Is there any big difference between a red-haired gorilla and a silverback gorilla through the eyes of a human? In the eyes of birds, it is enough for birds to know that it is humans who are responsible for their sharp decline, and there are people in North America, but there are no people in Asia? ”

At this time, Yanjing is already very dangerous, because the mutant birds have come to the outside of Yanjing, although there is no attack for the time being, but in the surrounding area, the number of mutant birds is too much, and Yanjing is in danger at any time.

"Teacher, what should we do next? Are you hiding in a bomb shelter? The student began to ask.

The zoologist shook his head helplessly and said, "If you can hide for a while, you can't hide for a lifetime!" The mutant birds have now regarded humans as their last enemies, and there is only one way to survive, either to destroy all the mutant birds, or to be frantically retaliated by the birds. ”

In fact, there is also an act of revenge between animals, whether it is a bear or an elephant, they can remember the appearance of humans and take revenge, and in the birds, the crow is more intelligent, in the past ten years, the crow will not forget to take revenge, so for humans, now at this time has been mutated birds to hostility, and there is only one way to survive next, that is, to completely eliminate the mutant birds, otherwise, the war will not end.

"Isn't there a better way? Like eliminating hatred between the two sides and then living in harmony? The student continued to ask, after all, it was too difficult to eliminate the mutant bird, and it was not something that could be done overnight.

It's a pity that such an illusion was finally punctured by the professor's ruthlessness, "Harmonious coexistence? What are you thinking? When did humans live in harmony with animals? The so-called harmonious coexistence is that humans occupy most of the resources, and animals get a small part of the resources that humans don't need, and now at this time the mutant birds have become stronger, and they are bound to get more resources, such as food and habitat, and humans cannot tolerate these, so in the end, the ending is already doomed, and humans and mutant birds and mutant beasts are now an endless situation. ”

After the professor explained the essential contradiction between humans and mutant birds, the students have already understood that at this time, why do mutant birds have to attack humans, in addition to revenge, it is to snatch resources, and the existence of human beings is to occupy a lot of resources in their hands, which will inevitably not be accepted by mutant birds.

At this time, an air raid siren sounded over the city, and the people in Yanjing City hurriedly looked for the surrounding bomb shelters to take refuge, while the soldiers were already in place, and the fighters stood on the streets and rooftops of the buildings, ready to meet the attack of the mutant birds.

At this time, there were already fighter jets taking off from the airfield in Yanjing, and three thousand fighters took off one after another, carrying enough weapons on the fighters, including missiles and machine gun bullets.

Wu Zhenyuan sat in the cockpit and said to the team members behind him: "Remember to follow me when you fly later, don't be surrounded by mutant birds, our battlefield is outside the city, in addition, save ammunition, don't run out of bullets at once, don't fly too fast, remember to save fuel, and then go back." ”

Wu Zhenyuan is no longer the immature soldier he was at the beginning, and now he has become the captain at this time, and there are several team members under him, and now he suddenly understands how the captain who sacrificed himself thinks of himself, and after going to the battlefield, he is still responsible for bringing these children back, which is really a heavy task.

The young team members all heard that the captain had participated in the defense of Yanjing a few years ago, and they were only hiding in the city at that time, and now, the team members also began to ask: "Captain, I heard that you have participated in the defense of Yanjing before, is it true?" ”

Wu Zhenyuan said calmly: "That's right, there is this incident, and it is precisely because of this incident that I will ask you to prepare before every departure, especially the preparation of ammunition, otherwise, it is easy to sacrifice." ”

Wu Zhenyuan can't forget until now, how his captain died in the first place! No one expected that at that time, the corpse king had already united with the mutant birds, and the original fighter was only on the mission of bombing the zombies, but later, in order to block the approach of the mutant birds, the captain and the rest of the old pilots rushed forward to exchange their lives for the time of Yanjing's defense.

"Captain, there are so many mutant birds, how can we fight?" Suddenly, a member of the team began to ask, interrupting Wu Zhenyuan's thoughts.

Wu Zhenyuan then replied: "When the time comes, you can follow me closely, fight in the formation you trained before, remember, you must fly very high in air combat, if the flight altitude is insufficient, you will be surrounded, mutant birds are very good at using life-for-life combat methods, so you must avoid fighting and use the advantage of maneuver to win." ”

After finishing speaking, it was his turn to take off, Wu Zhenyuan said: "Keep in touch, the microphone is on at any time, ready to take off." ”

Wu Zhenyuan made up his mind that these team members behind him must also return safely with them.

The attack of the mutant bird began, Yanjing now has a population of more than six million, it is an absolute big city, and the mutant bird side is obviously very aware of this, so it especially waited until the flock of birds outside the city had gathered tens of millions of people before starting to attack.

In the face of the mutant birds rushing over, the first air defense force is a surface-to-air missile, which is specially aimed at the place where the mutant birds are densely populated, and can kill hundreds of mutant birds in one launch.

The second layer of defense is anti-aircraft guns, some anti-aircraft guns are automatically aimed, and some are manually controlled, I can't tell who is good and who is bad, because the automatic control is not easy to use once it fails, and the manually controlled anti-aircraft guns are not accurate enough, but, in the face of the boundless mutant birds, as long as a series of bullets shoot out, it will rain blood in the sky, and there is not much point in aiming at this time, mainly because the firepower is sufficient.

The third line of defense is the anti-aircraft machine guns, plus the defensive strength of the soldiers on the ground, although the power is not as strong as the first two, but it is superior in number.

After the battle began, the mutant bird grabbed the small mutant beast and set off, and after coming to the sky above Chengshi, it had to drop the captured mutant beast directly from the air, so that the mutant beast caused chaos in the city, and the mutant bird was constantly harassing in the air.

The supernatural ones also stood on the roof of the building to deal with the mutant birds, Li Keyi was the most eye-catching existence at this time, she stood at the top of the tower in white clothes, and the whole person became the focus, and the light in the sky seemed to have all gathered on her, looking so holy, coupled with her title of the goddess of light, she was the real goddess in the hearts of many people at this time.

Li Keyi didn't expect Yanjing to encounter such a crisis, if this was not handled well, Yanjing City would be breached.

Now Li Keyi has applied light, and the strong light continues to bloom from her body, blinding the mutant birds in the air. The eyesight of birds is very powerful, but because the eyesight is very sharp, as long as it is irradiated by strong light, it is easy to be blinded.

After being blinded, the mutant bird loses its eyesight and eventually has to fall to the ground, as long as it falls to the ground, and after falling to the ground, it loses the advantage of flying, and the bird can only be slaughtered.

After the elite among the mutant birds discovered Li Keyi's trickiness, they directly started the sneak attack, but Li Keyi's mastery of light is very high, and there is no blind spot in the field of vision at three hundred and sixty degrees.

In the distant direction, Jin Zijue was with Xiao Sheng and the others, and they were also surprised after seeing Li Keyi's amazing performance now, and Jin Zijue spoke directly: "Li Keyi has definitely become a seventh-order ability, otherwise, according to the way she casts her ability now, her physical strength has already been exhausted, and it seems that the title of the strongest ability in Yanjing can only be given to Li Keyi." ”

After seeing Li Keyi's performance at this time, Jin Zijue and Xiao Sheng both saw it at this time, Li Keyi at this time definitely broke through the evolutionary barrier, otherwise it would be impossible to behave so shockingly, as for why Li Keyi has evolution crystals, they also know it, when they were at sea before, Li Keyi and Shen Feng took advantage of the fire to rob and steal several evolution crystals.

Prior to this, there were still many people who disputed the ownership of Yanjing's strongest ability, some people thought it was Xiao Sheng, and some people thought it was Jin Zijue, but after seeing today's Li Keyi's performance, everyone knew that at this time, the strongest person in Yanjing was definitely Li Keyi.