In a zombie apocalypse, expanding outward can be either easy or difficult.
The easy thing is to simply swallow up all hostile forces on the road of expansion and bring other safe bases under one's own rule.
Most bases in the past adopted this approach.
The difficult part is to drive out the zombies as well!
But zombies can never be killed, and the dead zombies will become food for other zombies.
If you only kill the zombies within your own territory, the zombies from other places will still be attracted and spread throughout the vast and undefended territory.
Therefore, if you want to completely drive out the zombies, you must include all the land within your sphere of influence within the walls, just like building a safe base!
This places extremely high demands on a force's infrastructure capabilities.
Moreover, infrastructure requires a large amount of materials, and ordinary materials before the apocalypse are simply unable to withstand zombie attacks.
Then you can only exchange materials from the God-given space.
And this requires a huge amount of points!
Today, the Blue Planet has expanded a hundred times. If one wants to build a wall along the border of China, which has grown a hundred times larger, the materials consumed will be incalculable!
But when zombies reach seven stars, they will gain the ability to fly, and solid walls alone cannot stop the zombie invasion.
Therefore, if you want to keep all the zombies out, you need to cover the entire sky!
This matter seems to have no solution, but it is not.
Among the technologies exchanged from the God-given space, there is a piece of black technology, which is a double-layer semi-circular bubble film shield that wraps the entire Fishman Island.
Although this shield does not absolutely prohibit entry, it can still play a protective role.
But if used on land, it doesn't seem to be very useful.
Fortunately, among the scientific and technological achievements they exchanged for, there were applications of bubble film shields on land and improvement plans.
The improved shield still cannot completely isolate the zombies, but if any creature tries to pass through the shield, the control center will be alerted.
In addition, the console will display the invaded area, making it easier for humans to send troops to block it.
In addition, Ao Xin, who had lived through the Second God's Gift in his previous life, knew that the Second God's Gift was a period for cultivating spiritual pressure, and the items that appeared in the God's Gift space were also related to the god of death.
Among them are the murderous stone and the construction method of the outer wall of Seireitei.
By then, by using murderous stones to upgrade the outer walls, a spiritual protection shield that is invisible to the naked eye can be raised on the basis of the original coating!
The spiritual power shield can keep most enemies out.
Although this also requires a huge amount of murderous stones and countless infrastructure teams working for an unknown amount of time to complete the upgrade of the original exterior wall.
But this is a method after all.
Although the forces in the previous life did not choose to build this laborious and expensive wall.
But Ao Xin believed that since the technology appeared in the God-given space and both God-given technologies had similar upgradeable features, it was definitely not useless!
There are huge amounts of zombie viruses in the air in the world today.
If there were no zombies to absorb the viruses in a space and use ominous energy to prevent the invasion of external viruses, then humans would not be able to have a truly pure land.
The reason why zombie corpses cannot be disposed of by incineration is because the zombie virus will be catalyzed under extremely high temperatures and spread in the air, making the zombie virus in the air more concentrated.
If all the zombies in the world were burned, the concentration of zombie viruses in the air at that time would be enough to infect all humans in the world!
Even if it is buried, it won’t work. The zombie virus will pollute the land and infect water sources, and the harm caused will be no worse than burning.
Therefore, at present, all humans can do when facing zombies is to kill them, throw away the corpses, and then expel them.
Although human strength is constantly improving, the body is already able to resist this level of zombie virus in the air.
But the newborn cannot resist.
If there is no fresh blood in the human race, even if they are not killed by zombies, they will eventually become extinct!
However, Ao Xin vaguely sensed the similar technologies that appeared in these two divine gifts.
Perhaps, the construction of the wall is the foundation for creating a pure land in the future!
He didn't know whether his guess was correct, but whether it was correct or not, it was worth a try!
Even if we cannot completely eliminate the zombie virus from the air in the future, at least there must be a city without zombies!
He told everyone his plan, and everyone was shocked by his ambition.
"Boss, are we going to surround the entire Biancheng?"
Meng Kui asked.
Ao Xin said:
"Naturally, the first step is to build a defensive wall around Biancheng, the second step is to build a defensive wall around Yuzhou, and finally I want to include the entire China!"
"I know this is difficult, but let's take it one step at a time."
"Combining the walls already built at the Yanhuang base, there are four layers of defense in total. If the zombies become too strong to resist in the future, the four layers of walls will serve as four layers of defense, giving humans time to retreat and develop."
"Everyone, please discuss the construction route, manpower allocation, the amount of materials needed, and the estimated construction time."
The start of every project requires cooperation from multiple parties, from proposing a plan, to modifying and finalizing the scheme, to implementation, finding ways to solve problems when they arise, and finally completing it. Each step is not easy.
Ao Xin did not ask them to come up with a plan on the spot, but asked them to go back and calculate and plan and then hand in the plan to him.
The meeting was disbanded and everyone went back to make estimates and draft plans according to his requirements.
After drafting the plan, they met again to discuss it and try their best to make all the data in the plan consistent with reality.
Modify after discussion, and discuss again after modification.
It wasn't until a week later that we had a relatively perfect plan.
Afterwards, the infrastructure team and combat team, led by their respective captains, left the city one after another.
There are still zombies outside attacking the city defenses. Now all the survivors in the entire Biancheng have been concentrated in the Yanhuang Base on the banks of the Bian River.
Even many survivors from the surrounding western part of the provincial capital moved here, making the newly established base seem a bit crowded.
The huge popularity attracts zombies to attack, and there is never a shortage of battles at any time.
Ao Xin walked out of the base and released thunder to clear out the zombies.
Normally, he doesn't care about these ordinary zombies, but leaves them to others to hone their fighting skills.
But now it’s different. The infrastructure team wants to go out and expand the base, and these zombies are a bit of a hindrance.
He won't have to worry too much until the construction team starts working and the combat teams responsible for protecting them are in place.
In a year, each combat team has become proficient in practicing the formation. With the help of the formation, they are more calm when facing zombies.
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