Needless to say, the big guys present just felt the movement of the mountains and the earth.

They are still like this at the rear ten kilometers. The front line faces such a huge explosion with great power. It is easy to imagine how much pressure they will bear and how much casualties they will suffer!

"Can you really want to destroy millions of humans at my Tianyun Base?" A big boss sighed.

More big shots looked a little weird in panic. They secretly issued some orders to their forces.

The contents of these commands are basically to prepare for retreat.

Obviously, the big guys have lost hope for the future of Tianyun Base.

Haven't you heard of it? There were about 600 small missiles bombarding the city wall just now! No matter how strong Tianyun's city wall is, how many bombardments can withstand? And once such zombies are born, they will continue to spread out!

At this time, your life is the most important thing. As for the materials, they are things outside of your body, and the amount they can take away is as much as they can. As for the millions of surviving people in the base, please be blessed.

Yang Chengguo felt the small movements of the bosses of the main palace and clearly noticed the frustration on the faces of the military generals.

He sighed in his heart.

"How frequent is the attack frequency of these zombies? No matter what, they cannot violate the law of conservation of energy. How many zombies are there on the front line for them to swallow and replenish?" Yang Chengguo quickly discovered the key point of the matter.

‘Pu silly’

As soon as Yang Chengguo finished speaking, a huge explosion sounded again. The vibration caused by the explosion made the command center building shake slightly. The dust began to fall from the ceiling of the conference room.

The military general Shang Zi calmed down. The boss of the main palace fought two battles and was about to leave first.

‘Bang’

Yang Chengguo smashed his desk again and shouted loudly: "Everyone calms me down. The zombies are still far away from here!"

"Report! The General Staff Office has estimated that when the turret zombies are devouring with all their strength, it will take three minutes to replenish their energy and launch them again. Their launch interval was five minutes just now. Because there are not many zombie bodies for them to swallow at the place where the turret zombies are located.

Xue Sheng: "Damn it! This is a problem. If you don't block the zombies farther away, there are too many zombies rushing up to be afraid of being unable to defend. However, if you kill them in the distance, it will become a supply for the zombies."

"I'll ask, which team on each section of the battlefield has a good way to deal with it? Especially the Tianlang Detachment, let's see if they have any solutions?" Yang Chengguo was relieved.

All the big guys are very concerned about this issue. This is also true of Bai Xiangdong, who has always been unfavorable to the Tianlang Detachment.

"The zombie attack was still the least casualties that the city wall section defended by the Tianlang Detachment suffered. In the first round of energy cannon attacks of the zombies, about thirty energy shells were fired at the A10 section. Captain Lin Chen released the willow body above the central city gate, defending the city wall section of 140 meters with left and right. More than a dozen swifts with superpowers spit out ice thorns in the air and volleyed all the energy shells attacked at the A10 section. The remaining a few energy shells were attacked by other zombies with superpowers. Only one energy shell fell on the city wall, destroying a heavy machine gun fire point. Another energy shell flew over the city wall, causing hundreds of casualties to the ordinary people. In the second round of zombies, the Tianlang Detachment organized all the psychics on the city wall to launch long-range interception. This time, there were basically no casualties in the a10 section."

"Okay! Quickly pass this method to various sections of the city walls. Let all the psychics work together to detonate energy shells. How much can be intercepted? Let me tell me again, has Lin Chen come up with a new way to deal with the zombies?" Yang Chengguo looked at the messenger with great expectations.

"The Tianlang Detachment came up with a solution. They reduced the short-range bombing range of heavy machine gun barrage and mortar from the original 800-meter range to about 300 meters. In this way, after the turret zombies fired the first shell, they would have no energy supply and could only be silenced. Then Lin Chen ordered all heavy machine guns and snipers to kill the turret zombies."

"When they do this, will the city wall be hit even more powerful?" Yang Chengguo was a little puzzled.

"Teacher Commander, Lin Chen asked all the strengtheners to place us on the city wall and let all the grenade weapons thrown by ordinary soldiers out. He also took out tens of thousands of grenades and hands. Grenades were thrown by the abilities. This was equivalent to adding thousands of small mortars. The zombies in the city wall were less than before. Only thousands of abilities threw these explosive bombs, and the number was not enough for them to throw. They just threw some out when they couldn't bear it."

"Damn it, Tianlang is still reliable at the critical moment! I passed the order to bring all the grenades and other throwing weapons in the warehouse to the city wall. In addition, all short-range missiles aimed at me at the preset coordinates and fired every ten minutes." Yang Chengguo said.

Xue Sheng: "Teacher Commander, the total number of missiles of our three divisions is only more than 500. Twenty of them will be shot out in this round. We originally wanted to behead the Corpse King. Is it too early to shoot it out now?"

Yang Chengguo: "What's the earlier? If you don't shoot it out now, kill more zombies. How many do you think we can take away these bulky missile vehicles when we retreat in the end?"

When the big guys heard Yang Chengguo, the most tough warring faction in the military, all said the word "retreat", they all thought that the general trend of retreat was irreversible.

But since there is still a way to deal with the front line and they are still insisting on it, there is no reason for them to leave the command center.

They are not willing to leave Tianyun Base, a place where they settle down.

......

On the missile positions in the area A of the base, the missiles on the 20 missile vehicles have been erected high.

“…3,2,1 launch!”

Twenty short-range missiles pulled up into the sky with long tail flames.

Thirty seconds later, the missiles flew over a dozen kilometers away, smashing heavily into the densest place of the corpse group and roared humans.

The effective killing range of short-range missiles to humans is three to five hundred meters. Against powerful zombies, the effective killing range has been reduced to about 100 meters. The effective killing area is about 10,000 square meters.

Each missile completely lost its lives, and four or five thousand zombies with broken limbs and legs without the ability to move.

20 huge holes appeared in the huge corpse group.

The impact of the zombies' sea tide is stagnant.

As the missile landed and exploded, Lin Chen's eyes shrank.

Lin Chen briefly evaluated the power of the missile's explosion. He came to a conclusion: Within 10 meters of the missile explosion center, even he was in danger of being killed instantly. And the Tianlang team members were unlucky within a range of fifty or sixty meters!

Therefore, Lin Chen is unwilling to fight against the military, and the huge power of the missile is a very important factor. In the face of missile attack, he can teleport away, but it is hard to say about his team members.

If it is facing missile saturation bombing, then...

......

Time goes by minute by minute.

The defensive soldiers at Tianyun Base were suffering from difficult suffering.

The attack of zombies has never stopped. However, the casualties on the human side are getting bigger and bigger, and the ammunition and drug resources are getting smaller and smaller.

After 11:00 a.m., the missile had launched seven or eight rounds, and only three firewalls were left. All sections of the city walls had collapse warnings except section A10 on the north.

Lin Chen's heart gradually sinks.

Could it be that when he was reborn in this life, the fate of Tianyun Base was not as good as in his previous life?

Although the Tianyun Base in his previous life suffered heavy casualties in the war to resist zombies, it at least held on.

At this moment, some small black dots appeared in the sky south of the base.

Lin Chen looked at him and his body suddenly shook.

"Major Yan, please inform the high-level of the base that a flock of mutant birds is coming in the south. Please land all helicopters immediately."

......

Command Center.

All the big guys remained silent. They waited for the situation to develop to a critical point, waited for Yang Chengguo to admit his failure to resist, and waited for Secretary Wan to issue a retreat order.

Secretly, the road leading to the south gate in Area A has been under martial law. Many of the most important materials have been loaded with cars.

The men under the bosses who had not participated in the war were ready to retreat.

"Report! The captain of the Tianlang Detachment Lin Chen sent a notice. He said there was a flock of mutant birds in the south..."

"Report! The radar observation station observed the sky about twenty kilometers south..."

These two reports were reported to the command center almost at the same time.

"Damn it, Lin Chen's eyes are actually comparable to mechanical radar! When I ordered, all helicopters landed immediately. The commanding heights kept tracking and observing the mutant bird flock." Yang Chengguo began to order.

"Hey, at such a critical moment, the mutant birds actually came to join in the fun. This is the base of heaven and death!" Someone from the main palace sighed pessimistically.

"Report! The subsequent news from the Tianlang Detachment came. According to Captain Lin Chen, the mutant bird flock came out of the mountains to grab evolutionary energy. Now many zombies on the battlefield are almost more energy than humans. The mutant birds are the first to choose zombies to attack. Captain Lin warned us not to take the initiative to attack the mutant birds, so that the mutant birds can turn the attack direction toward humans."

"Is that so? Why did Lin Chen know so clearly about the mutant birds? Yes, there are so many mutant swifts in his detachment, and they must have a lot of knowledge about the habits of the mutant birds. Then let's arrange it as he said." Yang Chengguo said.

"So, are these mutant birds here to help us?"

"It's hard to say. Haven't you heard that mutant birds are trying to grab evolutionary energy? They are not here to help humans."

"No matter what. At this time, as long as you can fight zombies, you will be a good bird."

The big guys finally heard a good news and started talking nonsense.

......

The center of the city wall on the west side of the base is section b10. The main force defending section b10 are the Jianfeng Detachment and the Sifang Team.

Bai Zhengfeng, who had not appeared in front of others for a long time, appeared above the city gate and had been commanding the battle on the spot.

The original number of corpses coming from the west was about 3.5 million. After several days of artillery attacks and intercepts from the base, when the corpses launched an attack, there were only about 2.4 million.

Bai Xiangdong believed that heavy artillery in the city kept bombarding and the city wall was supported by mountains of arms, so these zombies could not pose a threat to the base. So he used almost all his strength to earn this achievement.

Although the Sifang Team suffered a heavy blow in the rescue battle, the lean camel was bigger than the horse. The Bai family took out resources to recruit some idle abilities again, and took out the zero-level crystal core to cultivate some reserve abilities. Now the Sifang Team's strength has been restored a lot.

The Bai family consumed a lot of resources as a result.

At that time, there were quite a few military and political leaders at the base who held the same view as Bai Xiangdong. When the defensive battle began, the military and political leaders were not very panic.
Chapter completed!