In fact, many scientists collectively reported and proposed a crazy and bold plan: they want to invest a lot of civilization points again to expand the small cave sky to 1,000 square kilometers, which is 20 times the current size!

In this way, the output of the Zerg Legion can be greatly improved, solving the problem of aura once and for all!

As long as there is enough aura, ordinary materials can even be converted into extraordinary metals! For example, black iron is actually the idealization of the iron element. As long as there is aura, large quantities of black iron can be transformed.

Well, Lu Yuan rejected this crazy plan without even thinking!

What kind of Pangea joke are you kidding!

On the one hand, for 1,000 square kilometers, wouldn’t the Zerg population be two million, or even five million?

The disorderly expansion of the Zerg population will inevitably lead to internal conflicts. After all, the Zerg here does not have any mother worms, and it all depends on the conscientious management and diligent restraint of the higher Zerg.

The number of advanced bugs, that is, bugs with some intelligence, is limited, and the rest are just idiots!

The current 2,500 high-level Zerg are matched with 100,000 low-level Zerg, which is a relatively reasonable number and there will be no civil strife.

On the other hand, as the "upper universe" of the ancient great demon, Xiaodongtian's expansion ability is not as good as that of the "middle universe" and "lower universe".

After all, the "Greater Universe" is located in the mind and cannot be compared with the heart or bladder!

Therefore, if you want to expand to 1,000 square kilometers, you must fill in more civilization points.

It may require 1,500 or even 2,000 civilization points!

This is not a good deal.

But one advantage of "Shang Qiankun" is that the quality of the mushrooms produced will be higher.

The Zerg Legion can produce 200 souls of consumables in a year, and 30-50 souls of silk, blood, and insect shell materials, which is already a relatively good number.

All in all, no matter from which angle, Lu Yuan opposed the practice of humans investing a lot of civilization points to obtain a lot of aura.

So in this meeting, he directly explained the pros and cons: "Don't push yourself too far. These Zerg are bodyguards given to Conch by her mother! They are not human servants!"

"Do you really think they are like livestock, eating grass and milking? The relationship between the two parties is equal cooperation, not superior and subordinate! Before humans can provide them with more resources, they can provide these outputs

You have already exhausted all your benevolence! Where can other civilizations have such partners?"

"Either you go and cultivate the Rift Zerg yourself!"

"Whether it's used as livestock or used for experiments, I won't meddle in your own business!"

These scientists were all in a nonchalant tone, and each of them was a little embarrassed.

They have also cultivated the Rift Zerg, but their character is like a wild wild horse that is raging. At best, they will corrupt and steal, and at worst, they will attack humans.

In comparison, the Green Zerg are as gentle as kindergarten children...

Finally, Mr. Cat concluded: "Well, since there are no problems with logistics, please carry out the final safety inspection. We will set off soon."

…

Just like that, time soon came to the 75611th day of the era. Lu Yuan gave a speech and issued the order to set off.

"Friends and comrades, today, we are heading into the distance again. Once upon a time, returning to my hometown was a small personal dream of mine, but now, it has become everyone's dream."

"Our 18th civilization as human beings is actually a very lucky civilization. Our predecessors have left us a lot, our friends have helped us a lot, and we ourselves have successfully achieved a lot."

"Here, we even found partners who lived in harmony and spent more than fifty years of relaxation and peace, allowing us to barely meet the standards of a third-level civilization."

"But even so, the future of long-term survival in this difficult world is still unclear. Don't think that the gentleness in front of you can become eternal. The third-level civilization is just a low-level civilization, and it is still far away from the middle-level civilization.

A long way."

"Leaving this stable environment, no one knows what will happen in the future."

This speech was played on every big screen in squares, supermarkets, bars, and classrooms.

Whether they were adults or students, they were all staring.

Lu Yuan suddenly relaxed: "But we still have to leave, don't we? Making up this determination may be more difficult than walking out!"

"In the ninth era, day 75611, we will set sail again and find a new direction."

"May the world last forever and civilization be immortal."

His speech was brief, and within a few minutes he bowed slightly to the camera and walked off the stage.

"Traveling to distant places" may be a matter of course, permeating compulsory education, and there is not much to say.

People were silent, a little sad, a little excited, hopeful, anxious, curious... maybe all kinds of hard work.

The trumpeter's voice rang from the loudspeaker: "Two hours before departure, countdown preparations, please staff from each unit to conduct the last safety check. We will take off at 11 noon."

"Please all city citizens, please do not go to the edge of Sky City."

"The scenic exhibition area is located in areas A-3, A-4, B-3, and B-4. Please line up in an orderly manner."

"Repeat it again..."

The sound of "crash" footsteps sounded, and a large number of students ran to the exhibition area excitedly to watch the process of the city lifting into the sky. All kinds of drinks and melon seeds were sold out in an instant!

Professor Desert, who was inspecting the energy system, even had the leisure to sit on a chair and drink a cup of coffee.

"Times are really different."

He recalled the time when the Sky City rose for the first time - a lot of villagers howled like they were killing pigs because they were afraid of heights.

The flight of the city is like a kite, swaying east and west, and may fall to the ground at any time!

"What happened next?" Young people are very interested in the gossip of the past.

"At that time, many people hesitated, retreated, and wanted to live in the desert for the rest of their lives. But the commander of the mainland knocked down all the howling villagers with one punch, and then scolded them."

"We are just a novice civilization, is there any reason to retreat?"

Everyone burst into laughter.

"It's really like his style!"

As for now, the "Pandora" anti-gravity control system has long been mature, and has even installed multiple safety protection systems. What's more, there are "Flying Snakes", "Flying Dragons" and other Zerg races, as well as a large number of man-made aircraft, which are simply

Don't worry about safety issues.

Coincidentally, Professor Lu Tiantian is also inspecting a backup energy system - the poppy tree system. Well, this is the oldest energy supply, but it is indeed the last line of defense.

As a child born in the second generation, he has not experienced the interesting stories that happened in the first generation, but there are actually many stories passed down from the second generation.

"At that time, I had just graduated and was very ambitious and wanted to enter society, when I heard a shocking news."

"What news?"

"Commander Lu pulled a group of us into the conference room and held a small meeting. He said in a serious tone, we are still a novice civilization, and a random monster will kill us. Everything depends on you young people.

people."

"The first small goal, don't fucking cut off the power from time to time. I beg you, the energy of the poppy tree is not enough, guard your generator!"

Lu Tiantian imitated Lu Yuan's tone: "I was still young and under a lot of pressure at that time. I said in surprise, ah, does it depend on me? I study biology!"

"Commander Lu's eyes flashed: Otherwise? If we don't rely on you young people, how can we rely on my human flesh to generate electricity?"

People burst into laughter again.

At that time, it was not even a second-level civilization! It was really difficult!

But now humans may be able to confidently claim that we are a genuine third-level civilization! We have also established a firm foothold in Pangea!

Just like that, amidst the laughter and laughter, there was a soft "bang" sound.

The city in the sky that has been there for a long time finally rises again!

The silent forest resounded with the chirping of insects, and huge black fissures were hidden in the rift valley. Near the coastline, the old story was about to come to an end.

A new story begins again!

The whole city is like a smooth upward stone platform, rising higher and higher. In the blink of an eye, it exceeds 20,000 meters and is still climbing.

It was the first time for all the young people to see this scene, and they were shocked from the bottom of their hearts.

They stared blankly at the emerald green forest, the rippling blue ocean, the 100,000-meter-high mountain peak, and the abyss-like underground fissures... Everything was really too familiar.

On the ground, members of the Underground Alliance were bidding farewell.

"Hello!"

"See you again in ten thousand years! Hahaha!" The minotaur's cry faintly penetrated the clouds.

There are also many more sensitive human beings who couldn't help crying while observing the scenery. After all, humans are nostalgic creatures. After staying here for so long, they feel like their hometown.

This parting may never come back.

"The drifting rune of the Sky City is activated!"

"Glyph of Concealment is activated!"

A thin layer of cloud appeared on the surface of the outer wall, wrapping the city inside.

This makes the whole city look like a big ball of cotton-shaped white clouds, saving a lot of unnecessary trouble.

Then, leave here...

The destination...the direction of human mother civilization!

10 kilometers…

20 kilometers…

30 kilometers…

At the end of dusk, this group of white clouds slowly disappeared at the end of the sky.

…

The day goes by very quickly. You need to work and rest when you need to. Life is no different from before.

Different from the young people's feelings of farewell, as the city took off and gradually entered a stable operating state, Lu Yuan was filled with excitement and full of expectations for the future.

His home is here and his family is here.

What's wrong with starting a new journey?

What's more, he also left a branch of the poppy tree, so it would be no problem to call his friends occasionally.

There is even a [Temple] left here. As long as the Immortal Palace is repaired, you can teleport back at any time!

Just when I was lost in thought, the tauren clan had already made a dream call.

"Hahaha, I just want to confirm whether this thing can be used?"

"As expected, I saw you, my good brother! I haven't seen you for a day, just like I haven't seen you for a day." In the dream, the cow grinned.

Lu Yuan's eyelids twitched, "Brother, it costs money to make a phone call... Of course, the distance is so close, it doesn't cost much."

"Brother Niu, I have something for you. I almost forgot to tell you!"

"What?"

"The aphrodisiac wine brewed from scarlet mushrooms is buried in a forest. I'll tell you the specific location... Go take it out and replenish it for yourself."

"He is indeed my good brother!"

After Lu Yuan finished telling him the location, he hung up the phone with a grin on his face.

He carefully brewed that pot of wine, but he forgot to take it, and now he can only get it for free.

"Forget it, it's not worth much."

After exiting the dreamland, I found someone knocking on the door again.

"Dong dong dong."

"Please come in!"

"Hello, Commander-in-Chief!"

This group of people is a new generation of outstanding people represented by Hai Zhiyun.

The oldest ones are already working, and some have just graduated, totaling more than fifty people.

"Thought Uploader" Hai Zhiyun is the youngest, only 23 years old, but his ambition is not due to his age, but his status and talent are the most outstanding.

Lu Yuan cleared his throat and said what he had been thinking about for a long time: "Hello, fellow students, you are the most outstanding talents in the past fifty years. According to past practice, I need to consult you about the future direction."

"You must know that the future route is not in my hands, but in your hands. This is how every generation of us has come."

"But I have to admit that we are still a rookie civilization... there are many..."

As a result, as soon as he said the words "rookie civilization", all the classmates, boys and girls, burst into laughter.

After a long time, Lu Yuan came to his senses. He had used the ancestral conversation for several generations and it had been exposed.

He was very angry. What happened?

Who dares to reveal the secrets of civilization!!

If you can't even defeat a [ghost], you are just a novice civilization!

…

The distance between Lu Yuan and young people is still very close, but because of the close distance, there is often a problem of insufficient prestige.

It's not a big deal, anyway, the leader of these young people is not him, he is just the leader of leaders, and he has no control over them in the workplace.

Moreover, Lu Yuan quite likes this kind of relationship. It is relatively easy to get along with him. He is not the kind of person who is too serious. It is too tiring to have a straight face all day long.

At the current stage of the development of human civilization, various industries are developing at a rapid pace, and it is difficult for Lu Yuan to control various details.

So he could only ask these smartest people to figure out the way forward.

"What do you think a more powerful fourth-level civilization should look like? In which direction should it develop?"
Chapter completed!