The second line of defense is far less strong than the first, and under the attack of mutant zombies, from time to time some people are forced to retreat, and without blocking, the zombies are slowly approaching the inner city.

After resting for half an hour, they were reassigned, and their location happened to be in the inner city tower.

The dew in the early morning was a little shiny, and the frost of last night did not become frost, but turned into drops of water, hanging on the branches and leaves, exuding a cold smell.

"Tutu~"

Before I could climb the tower, a clear sound of gunfire came, and the height here was very high, and I could see farther, and the situation of the entire outer city was clear at a glance.

Smoke filled the air, and sporadic gunshots and explosions rang out in some places.

At this time, the zombie group was not distributed in large areas like outside, but was cut by some defense points and became a clump, and the aggregation was not as high as before.

"There are still so many, I guess I haven't even killed a tenth of them before."

Lu Tian's sight saw through almost the entire outer city, and the distribution of zombies also came into his heart, and he knew the current situation at a glance.

Because the northwest of the base belongs to the wasteland, and it is also far away from the original city, the main attack of all zombies is still in the south and east opposite the city tower.

A few people came out of the command office, Yun Ding, Di Hu and Luo Jianjun seemed to be discussing something, a little far away, and Lu Tian only heard what seemed to be a plan.

"Boom~"

Like a magnitude five or six earthquake, Lu Tian was startled, and his eyes immediately turned to the distance.

Thousands of meters away, the flames rose, followed by smoke and dust that soared into the sky, and when it reached a height of 100 meters, it rushed towards the base.

"There are still bombs left at the base!"

Seeing such a situation, combined with what plan they said, they must have used bombs again.

The smoke and dust quickly spread to the outer city, and the light in the sky was blocked again, and countless pairs of eyes looked at the approaching smoke and dust, and their mouths grew.

"You won't use nuclear weapons!"

Bald guessed wildly.

"Ahem~"

The smoke and dust swallowed up the tower, and some unprepared people were choked and coughed, and the sound of the roar in their ears was still overwhelming.

It took more than a minute for the smoke and dust to slowly recede, and the zombies in the distance were shocked a lot, and the most important thing was that there seemed to be no new zombies pouring in.

"Is it cutting off the road?"

Lu Tian knew that the explosion just now was not a nuclear weapon, first, the nuclear weapon should be more powerful, and second, it was impossible for the military department to release a nuclear weapon so closely, which would only harm others and himself, of course, he did not feel that the strong energy radiation was the key point.

"You can help the others hold this place."

Yun Ding walked over and arranged the task of Lu Tian and the others.

"Captain Yunding, what happened to the explosion just now?"

The old man in the purple shirt couldn't help but speak, the explosion just now was too powerful, and he couldn't help but be curious.

"There is still a part of the explosives we planted, which was specially buried in the depths, and a deep trench has just been blown up, which can be regarded as an artificial obstacle."

The rest of the people looked at each other, how deep the ditch was blown out by such a huge explosion!

"Why don't you dig a deep trench in advance, it's too late?"

The old lady of the Lu family is worthy of being present for a long time, and immediately questioned it.

Yunding was a little embarrassed, "I don't know about this." ”

In fact, he knew the real reason, but it was just about some secrets, and he didn't want to say it casually.

Under the strengthening of the vitality, the bacteria and these microorganisms have also become much stronger, and the already limited food has become more cherished, and this kind of large-scale project is very food-consuming, and the cost of the city wall has made the temporary base of Yanxian very uncomfortable, so it has not been done for a long time.

"The zombies are coming!"

Many people opened their mouths to warn, attracting everyone's attention to the front of the city.

The bullets that had been prepared were shot at the zombies' heads, blasting the zombies that had just gathered under the city.

The soldiers with Lu Tian and them also held their guns, found a suitable sniper position, and continued to fight.

Similar to the battle in the outer city, the zombies climb up on top of the corpse wall, the mutated zombies are used as assault soldiers, and there are power zombies and bigmouth zombies attacking from a distance.

However, the city walls here are much higher, and the difficulty for zombies to climb up has more than doubled, and the base has summed up its experience, and it seems easier to deal with things flying from the sky carefully.

And those ordinary people are not idle, helping to carry supplies and ammunition, so that basically every point can be well replenished.

The ditch that Yunding said seemed to have played some role, the number of zombies did not increase as much as in the early morning, and although the battle was still fierce, there was almost no rout.

At least for the time being.

"Woo~"

A black dot flew to it, and it was an explosive ball of flesh with corrosive liquid, but a large yellow hand appeared in the sky, and slapped it back.

The Earth Tiger struck, and his ability covered the entire tower, and everything that flew from the sky was easily stopped by him.

"Quack, it's fighting again, the old man is here."

The red-eyed old man, who had disappeared since he came back, flew back at this moment and landed on the castle tower.

He had just gone back to take a look, mainly after looking at the purple-blooded zombie, and then came over slowly.

"Senpai, please be seated."

Dihu asked people to bring him a chair and gave him enough face.

The tug-of-war between zombies and humans officially began, with more than 100,000 survivors as backups, the gunfire basically never stopped, and some of the zombies who climbed up were also swarmed by everyone, quickly killed, and those who dared to hit the city wall were also killed one by one.

The inner city has smaller defenses and a large number of survivors, more than doubling the defenses.

The first rays of sunlight shone down through the clouds, and it was actually a sunny day, and the sunshine symbolizing hope made many people have more strength, and this night, everyone was under a lot of pressure.

"Roar~"

But at this time, the zombies roared collectively, and many zombies poured in the distance to join the siege army, and the zombies near seemed to be stimulated and became more crazy.

"Attention, another wave of shock is coming."

The Earth Tiger alerts each defense point on the communicator.

The zombie hordes also know how to accumulate strength, not only will they continue to attack, but they will also carry out similar charges, trying to break through the human defenses in one go.

Howl~

As soon as a zombie climbed up, he wanted to bite the soldier next to him, but the zombie's eyes were black blood, and his nose was rotten, ugly and terrifying.

"You dare!"

The old man in the purple shirt punched over, slammed, and was shaken apart after falling.

"Hey~"

The old lady of the Lu family's dragon head crutches made a whirring sound, knocking down all the zombies in front of her.

And the earth tiger is even more powerful, when he saw that there was a group of zombies in front of him who were about to pile up, he clenched his fist, and saw several earth thorns emerging from the edge of the city wall, stabbing the zombies to the heart, and the pile of corpses collapsed.

Seeing that the others were so refreshing, the bald man laughed and whipped it.

"Smack!"

The loud sound of the whip came out, and the bald and smug expression froze, and the feeling was wrong, and it was actually empty.

The sound of the wind in his ears made his face change and he quickly retreated.

A sharp claw slashed through his head, sending chills in his face, and if he had slowed down a bit, his head would have been scratched out.

He spun his whip around and headed towards the shadow that had attacked him, forcing it to attack no further.

Call~

Bald and sweating, he looked at the guy lying on the ground with some fear, a thin zombie was baring his teeth at him, and some green slime was dripping from the ground.

"At this speed, it's definitely not a third-level zombie!"

He took a slight step back and took a defensive posture, trying to alert the others, only to find that he was not the only one who was entangled in zombies of this magnitude.

Zhang Laosan, the spear man, the old lady of the Lu family, and the old man in the purple shirt all encountered a powerful zombie, and they couldn't even care about other ordinary zombies.

Fortunately, there is a land tiger that controls it all and kills other ordinary zombies who want to make trouble, and the heavenly defense is handed over to the old man with red eyebrows.

As for Lu Tian, it's no wonder that the bald man didn't notice it, but that the fourth-level zombie had already died under his knife, and poor this guy was hacked to death by Lu Tian as soon as he appeared.

The earth tiger and the red-eyebrow old man both glanced at Lu Tian's side, and they were the only two people who found it for the first time.

Screams came from other places, and there were more than these fourth-level zombies, as well as other defense points.

At this time, Yunding came to find Shangtian again, naturally to deal with the zombies in other defense points, if it is not solved, it will be like the early morning, a large number of zombies will pour in.

This is the last line of defense, and we can't afford to lose it.

Lu Tian didn't refuse, and Yun Ding immediately rushed to the nearest point, where a high-level zombie was killing on a large scale.

The zombie's limbs had become webbed, and it had grown a tail, and with a long tongue, it had completely lost its human form.

Its weapons were its tail and tongue, which pierced the heads of two men, and the tongue continued to suck blood.

The genes of zombies can change at will, and there is another type of zombie that has never been seen before.

"Roar!"

The reptilian zombie had no eyes and nose, and its mouth was like a lizard, sensing Lu Tian's approach, and roared at him, splashing blood and mucus, disgusting.

The other survivors around them were terrified and far away, frightened by its ferocity and cruelty.

Its tail directly shook off the dead man and rushed towards Lu Tian.

It already senses the threat.

"Wow~"

The tail was like a spear, directly turning into a black shadow, like Lu Tian attacking, and its tongue was faster, and before it could even make a sound, it had already reached Lu Tian's eyes, and then it made a piercing sound of breaking the air.

Although its attack is fast, it is average in Lu Tian's eyes.

Dangdang's two sounds, a few traces of fire splattered, Lu Tian blocked its tongue and tail in succession, and the huge force shook it away, and at the same time, the blade was faster than it, slashing directly into its head.

Burst.~

The dark blood flowed out like water, and the beast-like head left the body directly, most of it was cut off, and it fell to the ground to flow a mixed white and black liquid, and after another bang, the rather huge body lost control and fell to the ground.

"Let's move on!"

Lu Tian greeted Yun Ding, stepped on his tongue that was still writhing and hurried to the next place.

Gollum~

A lot of saliva-swallowing voices sounded, and the people around looked at this scene with some dazedness, the monster who had just slaughtered them was solved by this man with one move!

This is too glaring!