As the pilots received the orders from their superiors, they understood what needed to be done. They did not object, but silently sent hundreds of newcomers back into the city. These young people were the hope for the future, and the task of dying was theirs alone. Thus, Wu Zhenyuan and other newcomers were able to return to the city, while the remaining pilots charged towards the mutated birds.
The fighter jets were almost out of fuel, and all their missiles had been used on the zombie horde. Today's slaughter of ten million zombies relied on aerial bombardment, an assault so fierce that the zombies had almost been unable to withstand it.
It could be said that the zombie horde had no resistance to the attacks from the sky; they could only be bombed.
The zombie kings could hide in burrows, but the zombie horde could not.
Currently, the pilots had no other means besides the fighter jets they were piloting. The so-called dogfighting was merely an excuse. Now, the pilots had used their lives to delay the situation for twenty minutes, which was enough time for Yanjing to issue an air raid alert.
"Wooo…" The air raid sirens blared across the sky above Yanjing city. Accompanied by announcements on the street's loudspeakers, everyone retreated into their homes, sealing doors and windows, closing curtains, and switching off lights. Countless people hid in their homes, daring not to step outside.
The fighter jets that had returned to Yanjing took this opportunity to rearm. When the fighter jets were equipped with automatic machine guns, it signified that no more mutated birds could resist. At this moment, the mutated birds entered Yanjing's airspace from all directions. After dropping the zombies, these mutated birds immediately took flight again, taking advantage of the remaining daylight to transport more zombies into the city.
From the very beginning of the zombie outbreak, Yanjing city had faced danger. At that time, survivors could only hide in their homes and pray for rescue to arrive soon. This hope was not in vain. A week later, the state mobilized the army and cleared all the zombies from the city, street by street. At that time, everyone believed Yanjing was the safest place.
Among Yanjing's current population of ten million, most believed it to be the safest place, which was why they had come. After all, it was the capital, and no matter what, it would not fall. As the saying goes, "It is not poverty that causes distress, but inequality; it is not poverty that causes distress, but insecurity." Only safety was what people cherished most. In other words, survival was the most important thing.
However, now, with zombies being airdropped into the city by mutated birds, after more than half a year, zombies reappeared in Yanjing. Those hiding within Yanjing recalled the fear brought by the zombies and thus stayed obediently at home, praying to gods and Buddhas. Even Christians took up their crosses to pray, all hoping for the danger to pass quickly.
Once the zombies were dropped into Yanjing, they immediately spread out, searching for prey. Zombies could not smash open doors, but breaking glass was quite simple. Even if every household had installed security bars, hordes of zombies could still force their way through by brute strength.
"Ah…"
"Help me, someone save me!"
"God, Buddha, please have mercy on us suffering people, don't… ah!"
Calls for help and screams echoed throughout Yanjing city. Many windows were broken, and zombies, like hungry wolves spotting prey, rushed in and began to tear at those hiding.
Zombies were creatures infected by a virus, and their saliva contained a large amount of the virus. Even if humans had antibodies, being re-infected by a large amount of virus would still lead to infection. Only evolved individuals and psychics would never be infected.
The zombies that broke into the rooms were not driven by the need to eat flesh. After finding hidden humans, they would bite and tear at them until the humans turned into zombies before letting go. These zombies had a unified goal: not only to cause chaos in the city but also to increase their numbers within the city.
In a corner of the city, a zombie king with a scar on its face appeared on the ground. Tens of thousands of mutated birds had entered Yanjing, and this zombie king had also entered the city amidst the chaos. If the mutated birds had only dropped zombies into Yanjing, their impact would not have been significant. Only with unified command could the zombies entering the city unleash their formidable combat power!
Birds flew continuously from outside towards Yanjing, each carrying either one or two zombies in their claws. Upon reaching the city, they would drop the zombies and fly away without lingering, seemingly reduced to mere tools for transporting zombies.
Many in the laboratory were also bewildered. They had never heard of zombie kings controlling other animals; zombie kings could only control zombies, and that too through ultrasonic waves. Why could these birds now be commanded by zombies? It was utterly incomprehensible!
At dusk, Shen Feng had finished his task of guarding the city walls for the day and was having dinner with his soldiers. Tonight's meal consisted of steamed buns and stir-fried cabbage. The steamed buns contained a small amount of meat filling. Although the food was simple, the most important thing was that it was unlimited, and everyone could eat their fill. No one had any complaints.
However, at that moment, a lump of bird droppings suddenly fell from the sky, landing precisely on Yang Chang's shoe. Yang Chang was furious and cursed at the sky, "You bastard! You defiled my freshly cleaned shoes!"
Lu Xian quickly hid his steamed bun, saying, "You can't get my steamed bun dirty. The army doesn't allow wasting food. If bird droppings land on my steamed bun, I really don't know what to do!"
But strangely, Yang Chang, usually so active, was silent. He just looked up at the sky, completely stunned.
Yang Chang was not a person with a good temper and often cursed when annoyed. Now, Yang Chang was like a fool, staring blankly at the sky without any movement.
Shen Feng couldn't help but look up. The moment he did, he casually threw away his steamed bun. He was so shocked that he stood up and reached around for a weapon, eventually grabbing his Barrett. He couldn't believe his eyes. The sky above was a dense, dark mass of giant mutated birds. With his enhanced vision, he could see that these mutated birds were carrying zombies in their claws!
Upon seeing this, Shen Feng immediately realized, "It's over, the mutated birds have entered the city, and the zombies have entered too!"
Lu Xian also stuffed his steamed bun into his pocket and frowned, "That's impossible. How could zombies and mutated beasts cooperate? I've never heard of such a thing. And why are there so many mutated birds around? There wasn't even a ghost to be seen in winter!"
Zombie hordes eat whatever they see, even mutated animals. Zombies eat mutated animals, so many mutated animals in the city were forced to stay away from the city by the zombie hordes. Similarly, mutated animals also treated zombies as food, and the two had been hostile towards each other for a long time.
Now, the zombies and mutated birds were acting in concert, which seemed very strange.
Shen Feng's expression changed, and he immediately crawled into his tent. He took out the illustrated guide given to him by Professor Niu Baiye from under his pillow. There were many mutated birds in the sky, but the most numerous were swans, geese, and cranes. The numbers of these three types of birds were the highest. It was definitely not a coincidence; there must be a reason!
Shen Feng found the illustrated guide for the three types of mutated birds and studied them carefully. He eventually discovered a commonality among the three birds: "They are all migratory birds!"
At this moment, Shen Feng recalled the scene where he was cornered by the zombie king Ma Jing Shuang underground. At that time, Ma Jing Shuang had confidently declared that as soon as spring arrived, Yanjing would be breached. Shen Feng had thought he was just bragging, his confidence stemming from arrogance.
But now Shen Feng understood. Zombie king Ma Jing Shuang was not arrogant at all; he had planned the aerial attack on Yanjing long ago. Why did he say they could achieve victory by spring? Of course, it was because when spring arrived, migratory birds would fly north. At this time, zombies would not need to hide underground due to the temperature, and they would also emerge from underground.
In winter, migratory birds fly south due to food scarcity. The northern regions were all frozen, especially the Siberian plains, where no insects could be found on the ground, so they had to fly south. After successfully overwintering in the south, they would fly north back to their homeland!
Moreover, with the doomsday descending, humanity's control over nature had greatly diminished. Migratory birds could take advantage of this time to reproduce rapidly. After a season of breeding in autumn, the number of migratory birds could be described as terrifying. No one had expected that at this time, zombies would gain the opportunity to attack Yanjing by utilizing mutated migratory birds.
"Zombie king Ma Jing Shuang, how terrifying! He had already thought about the battle situation three months in advance, used our conventional thinking, and found the only way to attack Yanjing. What terrifying cunning, he's simply a monster!" Shen Feng muttered to himself.
While Shen Feng was still studying ground tactics, the zombie side had mastered all-around combat methods. The ground was guarded by city walls and artillery, making it naturally impregnable. Underground, detectors were constantly exploring, making it pure wishful thinking to dig tunnels without being discovered. Therefore, the only way to enter Yanjing was through the sky!
Previously, everyone thought that the zombies had no aerial attack capabilities, so they paid no attention to sky defenses. After all, if zombies could fly, they would have entered Yanjing long ago. But now it seemed that zombies did not lack aerial attack capabilities, but rather the timing was not right, making it difficult to use!
Migratory birds all went south to overwinter during winter, and zombies could not fight smoothly in low temperatures. If they were forced to fight, they would likely all freeze to death in the wilderness. Therefore, the zombie king had meticulously planned to delay the operation until after spring, confident that they could enter Yanjing!
As Shen Feng was contemplating in his tent, Lu Xian's voice came from outside the tent, "City Lord, Miss Chu is still in the city. What should we do now?"
Hearing Lu Xian's voice, Shen Feng was instantly jolted awake. Now was not the time to think about migratory birds. Chu Chaoyan was still in the city. If she encountered danger, wouldn't that be terrible?
Although Chu Chaoyan claimed her condition had improved and she had been recuperating in the hospital for nearly two months, Shen Feng had still asked her to stay in the hospital. At that time, everyone believed Yanjing city was the safest place, and Shen Feng also thought so. But now, the situation had reversed. The front lines were the safest places because they were surrounded by soldiers, making it impossible for zombies to get close. Conversely, zombies had appeared within the city.
Shen Feng walked out of the tent, casually tossed his Barrett aside, and said to Guo Pinming, "Old Guo, quickly forge me two long swords. I need to go into the city. I'll leave things here to you!"
Upon hearing Shen Feng's request, Guo Pinming did not dare to delay. He found two steel pipes and immediately made two long swords for Shen Feng. Shen Feng's previous long swords had fallen into the underground cave and underground river, so Shen Feng had been without a weapon for some time. Now, with the crisis, Shen Feng was also worried that his wind blades would not be effective in the city, so he needed a weapon to participate in the battle.
Shen Feng grabbed the two long swords and rushed into the city, turning into an afterimage and disappearing in an instant. He was going into the city to rescue Chu Chaoyan. He couldn't just leave her unattended, as she didn't even have any defensive weapons around her. If she were targeted by mutated zombies or something similar, wouldn't that be troublesome?
The thought of tens of thousands of zombies appearing in the city sent a shiver down Shen Feng's spine. The enemy had reappeared within the city. No wonder strong fortresses are often breached from within, and strong fortresses can only be broken from the inside!
As Shen Feng, carrying his weapons, had just left the outpost, Shu Daping, holding an order, ran over breathlessly. As she ran, she said, "Headquarters has ordered the mobilization of psychics and elite evolved individuals to participate in the operation to encircle and annihilate the zombies within the city. Mr. Shen… Mr. Shen, where is he? Why… can't I see him?"
Lu Xian spread his hands, indicating it had nothing to do with him. "Our City Lord has a high level of thinking and has always taken it as his duty to protect the people. Therefore, the City Lord took the initiative to go into the city to participate in the rescue mission just now. You're late!"
Shu Daping looked at Lu Xian and Yang Chang and asked, "What about you two? As far as I know, you are also psychics, right?"
Yang Chang shrugged and pointed at the city wall, saying helplessly, "Then I have to disappoint you. We still have to defend the city walls. Moreover, we are the actual commanding officers. If we leave, who will command the operations? So, it's fine that the City Lord has set off!"