More than half a month has passed in a flash.

A rudimentary military base has really been built around the perimeter of this megacity. No, it would be more accurate to say that this should be a fortress. A fortress that can provide people with a sense of security.

Although Yun Qi did not have the right materials to build a base, the infinite fleet suspended in geostationary orbit lacked nothing. Almost all of the supplies were able to be completed by relying on fleet airdrops. The only thing missing is human resources.

The cost of a clone soldier is not low, and it also takes a certain amount of time to train. It's fine to be a warrior, but it's a huge waste to use these clones as labor.

In the past, Yunqi could have used a large number of robots and nanomachines to carry out construction tasks together. But now, not to mention nano manufacturing, it is to make a robotic arm so simple that it can only repeat the same action, and after less than twenty seconds of operation, it will completely strike!

So for Yun Qi, there is only one source of labor he needs, and that is the survivors here.

After three free meals, everyone, young and old, was required to obey the arrangements of the base and go to work. According to Yunqi's practice of not working and not eating, all survivors who want to stay here must be able to participate in the construction of the base.

Only children and the elderly can be exempted, although women are exempt from some heavy physical work. But some simple tasks that do not require physical strength are all left to women.

Combined with a batch of supplies received every three hours, the entire base began to take shape at a breakneck pace. And those who were still waiting on the sidelines also left their homes in an attempt to join the base and gain asylum.

During this time, there are always some zombies roaming the perimeter of the base from time to time, but they are spotted by the soldiers on the sentry very early. After a period of research, they have learned that the weak point of these zombies is the heart part. As soon as the heart is punctured, all their actions will stop.

According to some military doctors' research, this may be because the virus is all concentrated in the heart. Once the heart is destroyed, the amount of virus in the zombies' bodies will drop dramatically, which will cause them to quickly fail and then die.

So in order to deal with these zombies more effectively, the experts on the fleet specially developed a heavy sniper rifle equipped with 25mm armor-piercing shells.

These powerful weapons are enough to pierce the shell of a small armored vehicle in one blow.

Although the rate of fire is slow, this weapon is capable of killing zombies in one hit.

In the past few days, the zombies that have wandered over have been killed by a single shot from these heavy sniper rifles. It also gives these survivors a greater sense of security. In this strange world, having weapons that can defend oneself is a testament to the strength of an organization in the last days.

Moreover, these survivors have seen such ferocious weapons there, and they have the impression that the vast majority of human-made weapons have all failed for unknown reasons. Gunpowder weapons, on the other hand, were not greatly affected, but they were limited by bullets. After all, in this era, gunpowder weapons have long been out of the stage. Only a scarce number of gunpowder weapons were collected by some collectors.

But the funny thing is that until now, it happens to be a gunpowder weapon that has been neglected by mankind to save human civilization.

With the strong force as a guarantee, the construction speed of the base has been raised to a higher level. Almost every day, hundreds of survivors emerge from the city to join Yunqi. And these new survivors will soon become an effective labor resource to help build the base.

With its towering walls and watchtowers everywhere, after nearly a month of construction, this base is already in good shape. And five kilometers away from this base is the landing site of the airborne orbital module. Basically every day, the base receives about 100 orbital airborne silos from the fleet in orbit. For almost a whole day, the fire meteors in the sky never stopped.

This spectacular sight gave the people in the base more confidence. Because Yun Qi promised them that there was still a fleet in Earth orbit that could support them at any time.

These survivors don't know where the fleet came from, but they just need to know that the fleet is here to save them. The more desperate human beings are, the more they need hope. No matter how slim that hope may be.

And the fleet over the base is exactly what everyone wants!

In addition to obtaining supplies through the fleet, Yun Qi also arranged for a large number of people to cut wood, although these black trees have mutated, their wooden materials appear harder and stronger, which is very suitable for building fences and other defenses.

In this way, a fortress integrating production, life and military functions was built in a very short time.

After several expeditions to explore the ruins of the city, Yunqi gathered a total of 20,000 survivors. Of course, some of them are vicious cannibal tribes. Yun Qi had no mercy for these existences that were no longer human, and directly ordered the search team to kill them all to set an example. After all, troubled times need to be recoded!

In a city of 20 million people, no more than 20,000 survivors have survived, and the survival rate is less than 1 in 1,000. Among them, those who participate in scientific research are even rarer.

But even so, Yun Qi still found some former federal government warship manufacturing engineers from these people, and according to these people's descriptions. Not far from here, three hundred kilometers away, there is a satellite city attached to a megacity. There is an arsenal of the former federal government.

Where there is a shipyard specializing in the manufacture of warships, and perhaps where, Yunqi can find the jump engine technology he wants.

After receiving this news, Yun Qi did not hesitate and immediately began to form an expeditionary force, preparing to go where to find the possible wreckage of the warship.

But just as they were about to leave, an unusual situation interrupted him.

Unable to communicate, Yun Qi relied on a Misaka sister to keep in touch with the fleet.

These Misaka sisters from the school city world were taken by Yun Qi to live here in the Captain's House Guild. At the same time, they were also assigned a suitable job. That's the World Information Liaison.

Earlier, he had discovered that Misaka's psychic network was a psychic communication network that could transcend space and time without any interference.

Even across a world, this telepathic communication will only weaken, not be severed.

This is also the way Yunqi is able to control multiple worlds at the same time. Otherwise, there would be no communication, and the devil knows what would happen to those worlds.

Now, in a world where communications are disrupted, the only way to communicate is to rely on the Misaka network.

And today, Yun Qi got a terrible news from Misaka.

I don't know what the reason is, but the zombies that were originally at a low point of activity suddenly began to recover. A large number of zombies began to slowly move towards their base. According to the fleet's estimates, their temporary base will be attacked by the first zombie wave in a maximum of twenty-four hours.

According to the optical detection on the fleet, the number of zombies attacking this batch exceeded at least 100,000.

With such a large number of zombies, it is impossible to resist with the current firepower of the base.

They need to immediately strengthen the defense of the base, and then urgently create some defensive weapons, otherwise the base that Yun Qi painstakingly built will immediately come to naught!