After receiving this communication, Zhang Song glanced at the mutant beast that was about to be caught with a little reluctance, and finally left Sihe Lane with people.

At this time, he was clearly already a second-level evolutionary, and even the members of the dozen or so scout teams around him had reached the level of a first-level evolutionary, so his movement speed was fast.

Along a particular route, zombies wandering the streets often whizz past before they can react.

The municipal base is located near the location of the original city**, and is built on the basis of an air-raid shelter under the square.

With the help of the remnants of the army, it quickly sheltered a population of nearly 300,000.

This number seems quite huge, and even Xu Zimo's underground base in front of him is like a child's house.

However, compared to the original urban population of more than 7 million, this number is very small.

Less than one-twentieth of the proportion, it tells the grief of the whole city.

And now, this twentieth seems to be difficult to preserve.

Because Chen An used the vision of an iron corpse, he was seeing a wave of zombies like an ocean, rolling in this direction.

At the beginning, Chen An was also a little confused, didn't he say that he could support it for three or four months, it was only more than a month, how could such a change happen.

But think about it carefully, in the past month or so, in order to improve the strength of his base, he has hunted mutant beasts everywhere.

Although mutant beasts and zombies are both monsters in the eyes of humans, in fact, they are also preyed on and preyed on.

Because of the city's proximity to the mountains, the strength of the mutant beasts is extremely strong.

This was not obvious at the beginning of the apocalypse, but as the post-apocalyptic timeline progresses, they will become more and more powerful, eventually dominating the entire city and defeating the unorganized and undisciplined zombie hordes.

This is the development of the original timeline, but under the current situation, because of Chen An's action of killing chickens and taking eggs, a large number of mutant beasts that would have become strong were hunted by him in advance

With the loss of some natural enemies, the zombie group grew rapidly, forming a zombie tide of hundreds of thousands in less than a month, and following the fragrance of flesh and blood, it began to impact the human base.

Because of the early outbreak, this scale is a little worse than the million zombie tide on the original timeline, and even because the time is too short, the strongest zombie is only level three, which is two or three grades worse than the original level five zombie team.

But it is definitely not something that the same unprepared, weakly defended municipal bases can compete with.

Even Chen An thought to himself, it was the strength of his fourth-level reincarnation peak, full of firepower, and he had to kneel in front of these hundreds of thousands of zombies.

Sometimes the quantity reaches a certain level, and it can really cause a qualitative change.

Therefore, from beginning to end, he didn't plan to go to the rescue, because it was simply the mantis arm that was beyond his own strength.

The reason why the scout team was sent was only to keep an eye on the development of the situation at any time, so that a group of people could be rescued.

While saving people, it can also speed up the development of the base, which can be regarded as killing two birds with one stone, no, it should be a remedy in desperation.

If he is really capable, he will be able to obtain more benefits by blocking the terrifying zombie tide in front of 300,000 people.

Even if there are some careerists in the base, it is impossible to stop the absolute power and the rolling trend.

If the zombie tide is three months later, his strength can reach the sixth level of reincarnation, then he can really give it a try.

But now that the zombie tide has risen, it's too late to say anything. I can only think of ideas to save some survivors in the great destruction.

To this end, he not only sent scout teams, mobilized two hunting teams, but also mobilized a flying yaksha.

There are two flying yakshas, one he named the Silver Night, and the other he called the Silver Wing.

At this time, Chen An returned to the room alone, and the candlelight shadow technique projected his consciousness into the "heart" of the silver wing that was hunting.

The other bronze corpses scattered outside and leading the hunt alone consciously surrounded him and followed him in the direction of the municipal base.

And when he reached the top of a twenty-three-story building near the municipal base, thirty-seven bronze corpses and three hundred and sixty iron corpses had gathered around him.

Because the process of zombie refining has still not made a breakthrough, the evolution of walking corpses is slow, not to mention the copper corpses and iron corpses.

Since the end of the world, the number of copper and iron corpses under his command has barely increased, and these are almost equivalent to half of his family wealth.

For him, who has always been cautious, this time it can be said that he has made a bloody investment.

At this time, Silver Wing had become his doppelganger, and he stood on the top of the building and looked out over the railing, and the zombie siege in the distance had begun.

The zombie tide is formed very quickly, and even Xu Zimo can't tell the principle of its formation.

I only know that unless it is cleaned up at a fixed time, after the human base grows to a certain scale, there will always be zombies of no low level as if they suddenly got some kind of signal, coming all the way from a distance, and countless zombies follow each other on the way, and gradually form a terrifying zombie tide.

The size of the zombie wave depends on the size of the human settlement.

The larger the human settlement, the larger the zombie tide.

In the original timeline, this municipal base once gathered a population of nearly 700,000, which naturally attracted a million zombie waves.

Although the current offensive and defensive battle is not as large as the original timeline, it is still tragic.

Because the process of the apocalypse is only one month, the genetic drug has not yet been developed, or it has been developed, but it has not yet reached the municipal base of the city.

Therefore, most of the people who participated in this offensive and defensive battle were ordinary people, occasionally mixed with dozens of natural evolutionaries.

But their numbers were too small, almost one in a million, and in such a large-scale battle, their strength was so small that they were only first-order abilities.

If it weren't for the fact that at the beginning of the establishment of the municipal base, there were troops who took refuge and had sufficient ammunition and firepower, I am afraid that under the first wave of the zombie tide, all the defense forces of the base would be taken away.

But even so, the entire offensive and defensive battle dragged on until three o'clock in the morning.

As long as the zombie is not blown off its head, it will never stop like a perpetual motion machine.

But people can't do it, people have to rest, and the high-intensity combat for more than ten hours in a row finally caused the defense of the municipal base to collapse completely, starting with the collapse of the city wall and the hunting.

It is impossible for all of the 300,000 people to enter the underground air defense facilities to hide, so most of them are exposed to the zombie herd without shelter and become food for hunting.

Looking at this scene, Chen An sighed faintly and issued an order: "The operation begins." ”

At the same time, the scout team hiding in an abandoned nearby building also received this order.

Zhang Song looked at the paper that translated the content of the communication, his face was cloudy for a while, but in the end he gritted his teeth and said in a deep voice: "Execute the order." ”

He rose from a broken couch and lowered his sleeve to hide a thin pinhole in the crook of his elbow.

The figure flickered and flickered towards the door.

While adjusting to your newfound abilities, you get on a buggy that has been prepared for a long time.

At the same time, six SUVs of comparable size, and a modified large truck, gathered behind him, and drove wildly along the cleared street in a reserved direction.

At the same time, a circular instrument the size of a grinding disc pulled on the big card began to release a strange wave frequency.

This wave frequency is just a harsh noise to the human ear, but the entire zombie group is crazy and restless.

After hearing this voice, some of the zombies who had not yet entered the city gave up the flesh and blood in the city without hesitation, and instead chased after Zhang Song's scout team frantically.

Even the zombies who had already entered the city hesitated and struggled, as if the voice had a great temptation for them.

It's just that the scope of this sound seems to be quite limited, and it can't cover the zombie group that spreads out for more than ten miles, and only takes away the number of eighty or ninety thousand.

At this time, the same sound sounded from the other two directions, which belonged to Chen An's first hunting team and second hunting team.

Combined, the three parties have almost stripped off the 200,000 zombie group.

But the number of zombies in the city is still close to 300,000, which is not at all something that the defense force of the municipal base can resist completely.

What Chen An did was only to slow down the speed of zombie hunting, so that more people could escape.

At this time, the corpse refining troops also began to dispatch, they cleaned the road to Xu Zimo's underground base, and pinched all the zombies who were about to make a move along the way.

At the rear of the municipal base, in just one hour, three streets leading to the underground base were cleared.

Survivors of the Civic Base, as long as they are not stupid, will know where to flee.

As for Chen An himself, he drove the silver wing directly to the direction where Zhang Song left.

They were followed by eighty or ninety thousand zombies, even if they could get rid of most of them by crossing the streets and alleys, they were still under the most pressure.

Chen An's role is to find a way to bring them back safely after they have achieved their goal.

This is a team that he has spent more than a month hard to build, and the loss of one of them can make him feel painful.

Zhang Song and his entourage ran for 30 kilometers, and the road conditions began to deteriorate.

One is the destruction of the road, and the other is the sudden arrival of the apocalypse, and many vehicles are rear-ended and parked on the road, greatly hindering their traffic.

There was no way to do it, and when Chen An noticed that the zombie tide was showing signs of gathering, it was already too late.

This little time was only enough for them to choose these three routes and clear out more than ten miles of empty ground, which was still with the covert help of Chen An's iron corpse.

Otherwise, they wouldn't be able to run even ten miles away.

On the contrary, zombies don't have these concerns, and for them, the barricades can be jumped over with a slight jump, or they don't even need to jump over, as long as they are crushed by numbers. All barricades will be knocked open and trampled on.

Zhang Song and the others were bait, so they naturally didn't dare to escape too fast, and they were even afraid that the zombies would run away, so they could only move forward slowly in front of the zombie group.

Now that he encountered a roadblock that was not in the past, and the zombies behind him were only two or three hundred steps away, he could only take the team members to grit their teeth and jump out of the car, and make a final order: "Push the bandmeter into the river, and the others will scatter and flee." ”