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Soil will accumulate over time. Without human intervention, a thickness of about ten centimeters can be deposited in a thousand years, which is divided into bottom layers. Archaeologists can also classify the age of the cultural relics buried in the earth.

This is earth archaeological knowledge extracted from the crystal fragments in the library. Sanderya is not sure whether this knowledge can be directly applied to the present, but he just gently rubs the ground with his armor-wrapped hooves.

As long as the power armor exerts force, a mere ten centimeters of the ground can be stepped away in an instant, and this thousands of years of history will be stepped on, allowing the bottom layer of the sea of ​​​​stars that witnessed mankind to see the light of day again.

But it's only ten centimeters.

The history left by human beings in this grassland is, as Ji Zhi said, covered in yellow sand and can never be found again?

It seems that human history is neither persevering nor precious; it is no wonder that the scientific research team of the New Imperial Alliance has shown little interest in this mission from the beginning.

Technology hunters are accustomed to digging graves in space, and are accustomed to seeing relics that can be preserved for thousands of years. They have also successfully analyzed many lost and advanced technologies from these graves. It is reasonable for them to feel bored with today's earth.

The remnants of the magnificent empire on the grassland cannot survive even a thousand years.

The tauren was silent, his whole body suddenly stiffened, and he didn't even dare to move his toes - the tips of his hoofs wrapped in power armor could easily step on the ground, which meant that even if he just moved, he might break the weak glass in the ground.

general history.

At this time, Sandanya may have been in a daze for too long. Rong Liangyuan next to him felt bored and pushed his back: "Why are you in a daze? It's a joke."

It didn't even push.

The mercenary leader thought that the tauren was competing with him again, so he put a smile on his face and turned on the power of the power armor to give him another push.

Sanderya immediately turned his head, and his clean-shaven face still tried to maintain a firmness, but his words began to stutter: "Wait... wait! Don't use power armor! It will...

It will hurt the ground!”

After the stuttering, there was a cry: "You said that there was an empire on the grassland. It is not gone, it was just submerged under the earth... I... I don't want to destroy it..."

Finished.

Ji Zhi covered her mouth and looked back at the fallen grassland in front of her. She stepped on it when she was playing with Ai Shanshan on her back. Fortunately, there was grass covering her waist, otherwise there would be a hole made by her horse's hooves.

The cave will be visible at a glance.

Maybe he saw the centaur girl's embarrassment.

Wo Jinre sighed, stepped forward and patted Sandanya on the shoulder: "Don't make a conclusion so early, didn't you just say that? The grassland empire is only a small part of human history. It is not ranked high in terms of technology, and its territory is not the largest.

The earth still has such a big area, have you finished visiting it? Aren’t you still here feeling sorry for yourself?”

Sandanya wiped his eyes, nodded silently, and straightened his chest badge. Indeed, he could still look for traces of the so-called "Empire on which the Sun Never Sets" and other long histories.

It's just that the tauren have already made some predictions in their hearts. If they search based on their previous expectations, they will only be disappointed.

…

The earth is not too big for travelers in the interstellar age. Even if the power of the power armor is adjusted to the minimum according to Sander Cliff's insistence, it will not consume too much if you want to visit it.

Crossing the equator and rushing to the pole; the tauren from Sander Cliff just keeps flying, nominally looking for ideas, but actually trying to dispel the uneasiness in his heart.

But Rong Liangyuan was quite eager and couldn't help but wink at the tauren, even if he never received a reply.

Because the three of them are not the only ones who are looking for what Renlian is interested in. The main competitor is the scientific research team composed of the descendants of technology hunters and curators. Now they have put forward many conjectures that seem to be extremely reasonable.

As Sandanya's authority increased, Rong Liangyuan and Wo Jinre also benefited - they could see the conjectures formally submitted by the scientific research team, and they could also refer to the reports made through practice.

"Sander Ya, don't be in a daze anymore!" The mercenary leader said sincerely:

"Many conjectures that Renlian may be interested in have been raised, and we will lose the opportunity! Quickly use your brain to think about it!"

Sander Ya came back to his senses and slightly adjusted his somewhat shaky flying posture: "...I'll take a look at these reports first."

Renlian is probably not interested in the earth with the best preserved ecological environment or the most rapidly developing science and technology.

In the former, Zuo Wu's scientific research team built a large experimental site and artificially regressed the environment there by thousands of years - various plants competed to grow, deserts and swamps were also distributed reasonably, and many animals mimicked by the small gray machines were also present.

Have fun in it.

This scene was sent to the parallel world through the creation of the Fallen Empire, and no response was sent back.

In the latter case, the scientific research team recorded all kinds of cutting-edge knowledge on some hard drives - no matter whether it is correct or not, and no matter whether it has been verified or not, as long as it is cutting-edge, it includes the boldest conjectures in the current star sea and records them all.

This is not only the crystallization of human wisdom, it is simply a crystal that carved flowers on its own. But again, Renlian still ignored it.

Zuo Wu also vaguely expressed doubts about the fallen nation in his reply to the report. Did their creations not transmit the information to the world of Renlian at all?

Fallen Nation expressed denial and then uploaded an obscure paper to prove its innocence.

The paper itself caused a lot of excitement among Zuo Wu's scientific research team. Everyone speculated over and over again and agreed that Renlian had a high probability of receiving the information, but they were really not interested.

The distraction of the scientific research team was the reason why the mercenary leader Rong Liangyuan felt that his team still had hope of achieving results first. And the tauren was the most promising among his team, so he was so eager.

Sander Ya nodded, gradually suspended in the air, and murmured, also smiling bitterly at the soul of the battleship that resided in his vision: "The two most promising ideas have proven to be dead ends, and I... I have nothing else to do.

"

Wo Jinre couldn't make any comment. He was the only civilian among the three and had never received military training. He was out of breath just using power armor to keep up with the other two.

Only Battleship Soul can explain to the Tauren: "I think your previous idea was right, which is to focus on the civilization created by humans."

The tauren shook his head: "But the civilization created by humans... is obviously nothing in the sea of ​​stars."

"Nonsense! You are insincere, you..." Battleship Soul was furious because human civilization was belittled. After a while, he finally calmed down and continued: "The idiots in the star sea did not realize the value of these civilizations at that time!"

Sander Ya lowered his head even lower: "I didn't notice it either."

"You have no problem, just hurry up. Listen to me, just focus on human civilization and find the 'best' of each civilization created by human beings!"

The oldest civilization, the most powerful civilization, the latest civilization, etc.

Just do it.

But the tauren still smiled bitterly: "Humanity did not complete the unification of the planets before stepping out of the star sea, but left a lot of 'variety'."

The battleship soul firmly said: "This is also the advantage of human beings!" As it said, it pointed out the direction for Sander Cliff.

…

Sandanya suddenly started to act on his own, catching the other two people off guard.

Rong Liangyuan was in a daze and asked Wo Jinre in a low voice: "What did the tauren find? Which way is he walking now?"

"...the direction is towards a place on the earth called 'Africa'," Wo Jinre flipped through the map: "It is indeed the place of origin of human beings, at least that's what the mainstream theory of the earth said in the past."

The mercenary leader smiled: "Hey, why is it that only one name of the place of origin of mankind has been passed down this time? Isn't there any political power that could engrave its name on this land?"

"No, the history here is very miserable. Even some places were still tribal when humans were about to step out of the star sea." Wo Jinre replied.

The mercenary leader argued: "Ha, what happened to the tribal system? Isn't the prairie fire also a tribal system?"

"Leaving aside the questionable classification of Liaoyuan's political power," Wo Jinre shook his head: "Have you never studied the history of the earth? The tribal system is inappropriate on the earth. There is no hope of stepping out of the star sea, or even opening the door to science.

It’s all difficult!”

"Okay, okay," Rong Liangyuan clasped his hands, the sneer on his face not diminishing at all:

"It's just that I heard that the stronger the individual, the greater the hope of leading civilization to the star sea when the entire social system is backward. And a race that is weak but united can achieve better results in social development;"

"Thinking about it this way, human beings are really...individually weak, not to mention that they cannot help the entire civilization move forward. In the end, there is no reason why the collective society has not developed."

Wo Jinre frowned: "Weak as an individual? If you have the ability, go and fight with His Majesty. Have you seen Sandanya in a bad mood? If you continue to disturb his mood, you can find out what Renlian is interested in."

Rong Liangyuan could only raise his hands and surrender.

They didn't know how many clouds they passed by.

Africa has just arrived.

Jin Mian is actually here. Sandanya cannot choose to march alone, so naturally he has to join her.

There are lions in Africa.

Jin Mian was squatting among the shrubs of the savanna, eye to eye with those huge cats.

The three of them landed, and Sandanya's brain twitched for some reason, and he was a little excited: "Ms. Jinmian, have you found the feeling of home here?"

Jin Mianqian choked on the quilt and bared his teeth: "When I see the cats, I feel like this is home? Well, there are buffaloes there. When you see them, do you feel as if you are home?"

"No, I'm sorry," Sander Ya shook his head: "Speaking of Miss Jinmian, why are you here?"

Due to Zuo Wu's request, Jin Mian still cooperated: "I originally wanted to go to the jungle on Earth, the largest jungle, but I was a little disappointed. I thought I was looking in the wrong place, so I came to a continent with a similar shape.

place, the results here are not as good as over there.”

Sanderya was a little confused.

Jin Mian temporarily turned over his sketchbook and gestured: "Look, the largest jungle on earth is called the Amazon, and the continent it is on is called South America. Isn't it somewhat similar to the outline of the African continent? But there are

I was a little disappointed with the trees, so I came here."

The tauren breathed: "Why are you disappointed?"

"Because the trees here are too small! They can't compare to the giant trees in Yinggesuo!"

Jin Mian drew a little person representing herself in her sketchbook, and drew a very tall tree next to it:

"The trees in Yinggesuo are all of this size! It's a pity that after I was born, they were all burnt into charcoal by the war, very big charcoal! I originally came to the earth to see what their shape would be like when they were alive.

, but they turned out to be little saplings.”
To be continued...