The arrival of December means that the semester is coming to an end for students.

Winter vacation is coming.

Although the winter break is only two weeks, and school will start soon after the New Year, there is still half a month of spring break in March. That is the end of a semester, and when the cherry blossoms bloom in April, they will be fifth graders.

.

Ling doesn't feel uncomfortable with three vacations a year. In fact, the total length is similar to that of her previous school, but the winter vacation is divided into two. Taking breaks this way makes her feel more hopeful.

"Before humans, were there any intelligent civilizations on the earth?"

It’s nearing the end of the semester, and this is a question left by the teacher in the social studies class, which can also be regarded as winter vacation homework.

It's very profound. It's something that even scientists can't study thoroughly. Of course, we don't expect primary school students to be able to answer it. We just ask students to go to the library to read more books in their spare time and cultivate their ability to learn actively.

In fact, no matter how you answer it, you can answer it. It doesn’t matter if you discuss it from history, archeology, logic, or even mythology and folklore.

"Hey, Sakura's teacher left such an assignment."

At this time, the three of them were walking on a path with fallen branches and leaves. In the spring, this was an avenue of cherry blossoms. At this time, only the bare branches were left. There were only a few ginkgo trees, and the last few golden leaves were still hanging on.

All.

"That's right, I don't even know what books to look up." Sakura was a little distressed. She thought about asking her father, a professor of archeology at the university, but she felt that it was better to do her own homework.

"Then, I'd like to ask an authoritative person, Reiya-san, to answer!" Tomoyo pretended to be interviewing with a microphone, and put the hand holding a fist pretending to be a microphone to Reiya's mouth.

"Me? Authority?"

"Of course."

Well, that’s right. There is probably no one more suitable to answer this question than Gaia.

Before humans, the overlords at the top of the earth's food chain were dinosaurs. Starting from the Triassic, they lived on the earth for nearly 200 million years. However, the dinosaurs failed to create their own civilization.

From the current perspective of human beings, "wisdom" is obviously the most important, and we are proud of it. But from the perspective of biological evolution, the cost of "thinking" is too high. Huge brains are in the process of building a real civilization.

It used to be a huge burden. Its structure is complex and fragile, requiring a huge skull to hold it. It is not conducive to movement and consumes an amazing amount of energy. In fact, it weakens the ability to survive.

Therefore, in the survival of the fittest, wisdom is not the "excellent", but the "inferior" that is eliminated. In a long time, no living thing has successfully taken that step. Anyone who tries to "think" becomes someone else's problem.

Chinese food.

Dinosaurs became extinct 65 million years ago. Their birth and extinction in 200 million years did not seem to have caused any changes to the planet. If it were not for the fossils hidden in the geological layers, even future generations would not be able to know about them.

once existed.

According to the known conclusions of sociology, the existence of "civilization" on the earth is indeed very short.

Even from an archaeological perspective, the emergence of Homo sapiens, who can be called "human beings", only occurred 150,000 years ago. The actual civilization with historical records only lasts a few thousand years.

The huge time gap between thousands of years and 65 million years makes it difficult not to imagine how many unknown things happened during this period.

Ling also doesn't know, and has no intention of asking Gaia. Even if civilizations really existed in the past, they have been annihilated long ago. As long as she protects the present, it is enough.

A piece of ginkgo suddenly fell on her hair, and Ling also twisted the leaves, which were golden, like a small fan.

"Maybe we can ask the ginkgo tree?"

"Ginkgo?"

Ling also walked to the ginkgo tree and touched its rough trunk.

"Since the earliest days of the Triassic period 250 million years ago, when the oldest dinosaurs such as Coelophysis were born, ginkgo trees have been growing luxuriantly on this land. They must have seen it, right?

History."

At that time, Pangea (the original continental plate) had just begun to split, and today's five continents were still the same huge landmass stuck together. It was a real vicissitude of life, just like the creation of myths and legends.

Ginkgo cannot speak. It just stands quietly and has been standing there throughout history.

How do you say that?

Floating as if left alone in the world, transformed into immortality.

In the chaos of daily life, people always have to look up at the sky or the earth at some special time or space node before they seriously consider something more essential that is beyond life.

Those in that state can be called "poets". Unfortunately, poets are always laughed at by mortals.

Sakura suddenly knew how to write her winter vacation homework.

"Thank you, Lingye, Lingye knows so much."

"I wish I could help you."

Did prehistoric civilization exist on earth before humans? At least in this world, the answer is yes. In fact, Ling does not need to ask Gaia, just ask Beidou of Team TAC. Because as early as the era of the Ultra Guard, humans and

They have been in contact and everything is recorded in the file.

Unfortunately, the contact process was not friendly.

They call themselves Nongmart and live deep in the sea.

The Nongmart people were originally life on the ground. Because the earth's environment changed drastically during certain periods in the past tens of thousands of years, leading to mass extinction of organisms, the population of the Nongmart also dropped sharply and they could no longer survive on the ground, so they migrated with the power of science.

Entered the deep sea and built an underwater city.

But tens of thousands of years later, when the Nongmart people wanted to return to the earth, they found that there was already a new civilization on the earth, which had long been occupied by humans. Even humans were still trying to expand into the ocean. The technology of the Nongmart people was strong.

He wanted to launch a war to take back the land and prevent humans from developing the ocean, but was stopped by Severn at the time.

In that war, Severn and humans were victorious. Including the biological weapon Gallows, which the Nongmartes were proud of, was also wiped out.

As a last resort, they were defeated and could only go back to the deep sea. They continued to live in the dark depths of the sea. However, originally they were avoiding natural disasters, but now they are avoiding human beings.

However, at that time, humans also promised to suspend the development of the sea, which could be regarded as a temporary truce until one of the parties reneges on the agreement again at some point in the future.

In order to prevent uneasy changes in human society, these are not announced to the general public.

According to the news reports at the time, it was just the Ultra Guard and Seven who destroyed another group of aliens who attempted to invade the earth.

The real file codename "Ω" is sealed deep in the secret room.

It is unknown to others, not even Ling.

When Sakura returned home, it was already dark. The days in this season are short, and it gets dark very quickly.

There were no lights on in the room, and Sakura knew it, because her father had told her a long time ago that there was an off-campus study today and he would take students to other cities for field trips.

The archeology profession is like this. A lot of what you really need to learn is outside of books.

The food is all in the refrigerator, just heat it up. After so many years, Sakura has long been used to it.

The photo of her mother that was originally enshrined in the living room was taken away. It was taken away by her father - only the dead need to be worshiped in this way. Sakura knew that her father had always wanted to ask her those words, but he didn't. He was waiting for Sakura herself

Say.

After dinner while the stove was warming up, Sakura was about to go to her room to do her homework, when the home landline phone rang.

"Something happened to the archaeological team?"

When she first heard this sentence, Sakura's mind went blank, but fortunately, things were not what she thought.

The caller was Dad’s assistant professor.

"Professor Kinomoto is fine, but many students have entered the hospital, and the professor went with them. The professor asked me to call home to prevent you from worrying."

The accident was likely to be on the news. Instead of letting Sakura worry after seeing the news, Fujitaka took the initiative to have someone call to make sure it was safe.

"Thank you so much for calling me."

"No, no, I am the one. I usually take care of the professor. General Assembly, please don't worry, the professor will go back soon."

After hanging up the phone, Sakura still felt a little uneasy.

Although it was a safe call, the archaeological team encountered an accident but did not mention what the accident was, which still worried her.

Unable to bear it, she took out her mobile phone and dialed Lingye's number. But she didn't want to find Lingye, she wanted to find her mother.

In the past, she could only murmur to her mother's photos, but now, she can actually talk to her mother and even meet her.

She knew that she shouldn't expect more, but sometimes she couldn't help but hope that her mother could recognize her father and return to this home.

Not long ago, the tac team also received a report.

"Captain, the police station in Yamanashi Prefecture has forwarded an alarm. During the excavation of the archaeological site there, unknown thick smoke appeared underground, and those who inhaled it were poisoned."

"Is it related to Super Beast?"

Although Yabo surrendered, Captain Long was still suspicious for the first time, which has become a professional habit. What's more, Yabo also admitted personally that there may indeed be some unawakened super beasts left on the earth.

However, the Yabo family also made compensation for this - enough anti-matter raw materials to make ten v7 missiles. No, it has now been upgraded to v9 missiles. With the support of science and technology from Yabo's compensation, the power of the missile has been further enhanced.<

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In the terms of compensation, these anti-matter missiles are used to destroy those super beasts that may exist. However, after the production is completed, humans have the final say on how to use them.

The human side is satisfied with this and is willing to accept it.

According to the data calculated by the technical department, each of the V9 new anti-matter missiles is no less powerful than the "Spiceum Ray". Of course, this is only data calculated from pure energy angles. As for whether the Spessium Ray has other special

The lethality cannot be quantified.

No matter what, this is a trump card for mankind to prepare against unknown enemies that may continue to appear in the future.
To be continued...