When he heard Ye Feng say that the real crisis was coming, everyone beside him changed their faces, including Xu Youcai and other superpowers.

Because even Ye Feng said it was a crisis, it is conceivable how dangerous the things that will come will be.

However, they quickly calmed down because if the crisis really came, Ye Feng would not be unprepared. Since Ye Feng was so calm, what else would they have to worry about?

Even after thinking about this, everyone's faces showed a good look and all guessed what Ye Feng's so-called crisis was.

Just as they were guessing, a sharp bird song suddenly came from a distance, and then the sound became closer and louder.

The moment he heard the sound, Xu Youcai blurted out, "It was a bird zombie attack."

As one of Ye Feng's core circle, Xu Youcai certainly heard Ye Feng say that this bird zombie is terrifying.

These bird zombies usually appear in groups, and when they attack from the sky, their painstakingly managed city walls have no effect at all. These bird zombies can directly attack ordinary survivors as bases.

And once these ordinary survivors are infected by the zombie virus in their bodies, they will become zombies, and the chaos caused by this will be extremely terrifying.

"Raise the air defense alarm, let all residents hide in their homes, and activate the Tesla air defense system." Looking at a large group of birds flying in the sky, Ye Feng opened his mouth and ordered.

These bird zombies are different from ordinary types of zombies. They like to appear the most when the sun rises in the morning, so as long as they block this wave of attacks, even if they encounter bird zombies, the number will not be too large.

Hearing Ye Feng's order, Jiang Yilin was slightly stunned, but he quickly remembered that a few days ago, an engineering team came over to Xin'an City and said that he wanted to install an air defense system.

However, Jiang Yilin was busy arranging the defense of the corpse tide at the beginning and did not pay much attention to it. Now he remembered the importance of this air defense system.

Without any hesitation, he immediately asked the messenger to convey Ye Feng's orders, especially the engineering team, to ask them to activate the air defense system as soon as possible.

Soon, with the sound of the air defense alarm, the residents of the base immediately returned home to lock the doors and windows after receiving the order. At the same time, iron pillars with waist thicknesses were raised on some military buildings in Shuangzhou City.

These iron pillars are hollow and contain thick wires. At the top of these iron pillars, there are circles of electromagnetic induction coils, and there seems to be a faint current flashing.

That's right, this is an air defense weapon transformed by Wu Ming using the principles of Tesla coils.

Soon, a large group of black bird zombies in the distance approached, and the coils of the towering iron pillars flickered more and more densely, and a thick lightning quickly formed, surrounding these electromagnetic coils like thunder dragons.

Finally, a zombie seagull flew to the base.

Swish!

A thick blue lightning flashed through the sky and killed the zombie seagull. The half-meter-long seagull was instantly charred. Under the millions of lightning, even if its body was transformed by the zombie virus, it was vulnerable in front of this terrifying high-voltage current.

As the birds approached, the Tesla coils that were erected everywhere in the base seemed to be activated at this moment, and countless lightning flashed out. These lightning flashed as they jumped and flashed one by one, and in an instant it seemed like a large lightning-forming figure spread out in the sky.

Crackling!

All the bird zombies that were close to this lightning were killed by ruthless lightning, and were burnt by electricity and fell from high altitude.

There is no bird zombie that can withstand such high-intensity lightning. No matter how many of their impacts are, they can only fall.

Especially when these officers and soldiers saw that even the goshawks with wings spreading as three meters long were immediately charred and fell down after being struck by lightning, they couldn't help but breathe a sigh of relief.

To be honest, everyone was scared when they looked at the bird zombies that covered the sky and covered all the light.

Fortunately, Ye Feng made arrangements in advance, and this most dangerous bird zombie has become the most relaxed thing they can deal with.

"Let the logistics department keep a close eye on the generator situation. If there is any problem, it is time to repair it immediately. I am afraid that the attacks of these bird zombies will last about half an hour. During this process, there must be no problem with the power system." Ye Feng ordered.

"I will arrange it immediately. But Marshal Ye Feng, can this air defense system be used on the city wall? In this way, our defense will be solid." Jiang Yilin looked at the towering iron pillars with his eyes shining, and asked.

After hearing this, Ye Feng also looked up at the intertwined blue lightning in the sky, but he slowly shook his head, "It is too difficult to control lightning. Our magnetic constraint technology is not mature, and it is unlikely to be realized in a short period of time, and it is easy to cause accidental injuries."

The officers around him looked a little disappointed when they heard this, but it was a sign that they could do this.

After hearing this, Jiang Yilin sighed with regret and immediately set up arrangements.

The fall of so many bird zombies is also a huge test for the construction of the base. The roofs and doors and windows of many houses have been smashed by empty bird zombies.

Of course, the benefits are not without them. These bird zombies also contain evolutionary flesh, and their corpses fall into the base and can be collected safely.

All of these were arranged by Mayor Jiang Yilin, while Ye Feng came to the city wall and watched the tide of corpse again.

As the sun rises, these zombies are far from crazy when they are late, and their attacks have greatly weakened. In this case, as long as there is sufficient ammunition, a battalion soldiers can defend a city wall.

"Xu Youcai, please contact Xin'an City and tell them that they can send troops to welcome the survivors. Try to transfer most of the survivors here this afternoon."

"We want to attract these zombie fish to Haihua City before tonight." Ye Feng narrowed his eyes and said coldly.

Since Haihua City had a plan to make an idea about the industrial park some time ago, Ye Feng would of course have to give them a gift now.

------------
Chapter completed!