There is no way to know what Lao Dong saw back then.

Unless they can get out of this hellish place alive.

Liu Fei told everyone about the current situation, and only he had the most complete information.

Now it seems that there is only one place to break the game.

Ground floor!

The vast underground world discovered by Academician Wen is the only thing that is still unclear.

There are several scholars of the geological school in the group of scholars.

Small geological changes are not difficult for them.

An hour and a half had passed, considering that everyone except Liu Fei only had a twenty-four hour period of knowledge.

The first passage entrance is opened.

Liu Fei was the first to go in.

The labyrinth is criss-crossed with zigzag underground passages, which are said to be underground passages, but in fact this passage is hundreds of meters high.

Walking in it, everything is magnified, as if you have suddenly arrived in the land of giants.

The air is very fresh, which means that there is good ventilation equipment in the ground.

If the detection is correct, the huge passage they are walking on in front of them is insignificant in the entire underground world, and it is nothing at all.

There are obvious traces of man-made inside, and a large number of collapsed building ruins are lined up on both sides of the passage.

It's more like a giant shelter than an underground passage.

Liu Fei and the others cautiously moved quietly in the dark corridor that seemed to have been walked by no one for thousands of years, and even their breathing became slight, as if a heavy sneeze would wake countless evils from the darkness.

For some reason, Liu Fei thought of the aura weapon he had seen on it before.

Every building, every brick, every word here exudes the unique heaviness of this world, and every penny here is stained with the blood left by human beings, this is a book that cannot be read at all, it is too thick.

Is this really a miracle that the human world can build?

The members of the group of scholars walked as they walked around, looking at every piece of ruins around them as if they were looking at miracles.

"It's too big, it's not reasonable. Academician Wen couldn't help but speak: "I can't detect the edge at all, the average height is 398.3 meters, the average width is 1110.33 meters, the length is constantly extending, and there are layers of passages under the passage." In equal proportions, the area of this underground world is already large enough to accommodate tens of millions of people. How can we have the ability and resources to create such a world? ”

"The surrounding architecture seems to be a fusion of Chinese style and ancient Gothic style, and there is no other place in the world that has such a blend of style. "As the successor of Reiki historiography, Kamiyo Chiba has an understanding of all kinds of history after the revival of Reiki in the world.

"Not only that, but I just saw some traces of the Combined Academic Circle on the walls of the passage, but it seems to be so old that it is almost impossible to see it. Goethe came over with a serious expression.

"Can't see clearly through the wear?" Liu Fei looked at Wang Dong, who was leading the team to search in front of him: "Old Wang, did you find anything in the ruins?"

The king shook his head: "I can't find anything of value." ”

"No, I overlooked a question. Liu Fei walked quickly to a ruin: "These ruins themselves are the most valuable things. ”

"The most valuable?" everyone gradually surrounded Liu Fei.

Hundreds of people gathered together, but they seemed so small compared to the vast dark passage.

Liu Fei casually picked up a piece of cement gravel.

The energy of historiography is booming.

This time he didn't use any history scholarship.

Just inject the purest historiographical energy into a lifeless stone.

The mouse touched Wang Dong next to him: "Lao Wang, I remember that we learned in high school that simple energy input is the most efficient way to use aura, what is Fei Ge doing?"

Wang Dong squinted, a little, a trace of surprise flashed in his eyes, and he said softly: "Then you should also remember another sentence in the textbook, all academics ultimately serve Reiki." Reiki is the root of everything. ”

"And then?" the mouse still didn't understand.

"Reiki in its purest form means that the energy is not disturbed by any scholarship, such as historiographical aura. When it acts on an object, it will slowly restore all the history of that object. It's just ......" Kamiyo Chiba next to him heard the discussion between the two.

"It's just that this kind of restoration requires a huge amount of aura, and few people except high-level scholars use this method. Wang Dong continued.

The mouse suddenly realized and nodded: "When is Brother Fei still pretending to be here, how much aura can he have as a college student." ”

Hearing this, not only Wang Dong and Shendai Qianyu, but almost everyone showed a similar wry smile.

How much aura can a college student have?

This sentence is valid for anyone, but it does not work for Liu Fei, a demon.

Everyone watched Liu Fei lead everyone through the chaotic area to this safe area alone.

All the college students present together don't have this aura storage, right?

It's a really nerve-wracking topic.

Everyone was discussing in a low voice, and the cement gravel in Liu Fei's hand had begun to change.

Historiography aura has a basic attribute, which is called dynastic.

As long as you have enough aura, you will be able to restore the history of this item to its original state.

There have been scholars who have done calculations.

Simply using the aura output to complete the age of a man-made object weighing 100 grams for a year requires about the aura reserve of a normal student-level scholar.

How much aura does this small cement stone in Liu Fei's hand need?

No one can tell.

But everyone clearly saw that the state of the cement stone was constantly changing.

At first, the speed of transformation was not too fast, but when Liu Fei increased the efficiency of the aura output, the faint earthy yellow historiography aura gradually formed a translucent and cocoon-like arc to wrap the gravel.

In the cocoon, the rate of change of the gravel accelerates abruptly, almost every second and over the course of several years.

After that, the time changes in the cocoon more and more rapidly, and you can even see the historical line caused by the rapid flow of time.

Chiba Kamiyo, who is known as the most talented neon in the past decade, covered his mouth in shock.

"This speed...... How much aura reserves does he have? ”

Time passed little by little, and half of the twenty-four hours passed in an instant.

The cement gravel finally began to disperse from a mass of polymer.

This means...... It has finally come to the moment of its birth.

Liu Fei stopped, and the scene was silent.

Everyone was not only shocked by Liu Fei's terrifying aura reserves, but what was even more terrifying was the meaning of this five-hour historical restoration.

"Ninety-eight thousand six hundred and forty-five years. Liu Fei reported an accurate figure: "This piece of cement was first created nearly 100,000 years ago. ”

Everyone, including Suss and Wen Taihe, couldn't say a word.

Liu Fei was the calmest of the crowd, and he got up with a smile: "Now the problem is here, everyone has found a large number of traces related to aura revival in the passage. So where the hell is this?"

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