Under the moon!

Nie Yun's doppelganger looked around for a week, then he was stunned.

It is different from what he imagined as an empty or sci-fi alien base.

This is a huge and desolate underground world, but it is not completely natural, but there are a lot of artificial pillar structures!

Looking around, the height of this underground space is about tens of kilometers, and every hundreds of kilometers away, there is a black pillar of Optimus giant tower standing there, as if countless Optimus giant hands , Opened up this world!

Although the stalactite pillars in natural caves can also form similar landscapes, it can be judged that they must not be naturally formed, but artificial support structures only by looking at the colors that are completely different from the surrounding soil and the uniformity of the distribution!

"Here ... what's going on?" Nie Yun was completely shocked by the scene before him.

Imagine if this is not the case here, even for the entire moon, how much should this amount of engineering be?

Can the whole human race be completed for 5000 years?

Nie Yun carefully observed the surrounding environment. The ground was obviously preliminarily flattened, and there were some slight traces suspected of moving by large engineering vehicles.

"Tread!" Nie Yun stepped **** her feet, her body flew up to a height of hundreds of meters like a flea, and then slowly flew towards the nearest black stone pillar several kilometers away.

The gravitational force has been greatly weakened here, close to the lunar nucleus. It is only about one tenth of the gravity on the moon's surface, and about one sixtieth of the earth's gravity. The 200-kilogram Nie Yun avatar is as light as a swallow.

A vain-like scene appeared in this underground world, at least if Nie Yun made a movie, he would not have to hang Weiya.

With the powerful power of this body, Nie Yun achieved a high-speed movement of 240 kilometers per hour with only 11 roads. Just two or three jumps, he came to the target.

From a close distance, the diameter of this black stone pillar is about 500 meters, like a majestic mountain!

Nie Yun took a closer look and found that the stone pillar was not black all over the body, but a fine black grid-like texture covered with the original gray stone pillar, even extending into the stone pillar, a bit similar ... Climbing tiger?

"Sure enough, weird! This seems to be a means of reinforcement?" Nie Yun guessed.

He tried to grab a handful of black matter and pulled it, almost to the utmost strength to tear it off. To the strength of this body, this level of toughness was quite amazing!

Nie Yun then put his palm directly on this black substance, and then swallowed it. After closing his eyes and feeling it for a while, Nie Yun opened his eyes in surprise.

This black substance contains a lot of metal components, and its microstructure is similar ... plant fibers? !

"Can it really be a plant?" Nie Yun stunned.

Nie Yun walked around the stone pillar, but found no other anomalies.

It took Fei such a great effort to build such an underground space, but there is no building here. Isn't it like expanding the base or living space?

Never mind that aliens are also driving Lan Xiang. Is this their excavator training base?

"It really looks like some space is empty ... eh? Wait! Where is the light from here?" Nie Yun finally found another anomaly.

The underground space is very empty, but I can't see any bright light source, but it is as bright as the day. Nie Yun carefully observed, and finally found that the light source turned out to be ... the gray soil around!

He leaned over and grabbed a rock for a closer look, then frowned, his hands squeezed hard, and the rocks were directly squeezed into powder by him.

Then he spread his palms and looked at the powdery substance on it. The pupils in his eyes contracted, adjusted the focal length, and turned into a pair of "microscopic eyes". Finally, he saw that there were small red crystal particles that were not visible to the naked eye. From them.

"What's this?" The curious Nie Yun simply engulfed another identification technique directly.

The powder on the palm was quickly broken down, but Nie Yun was surprised to find that the identification technique ... failed to use!

In addition to the metal-rich soil, the red crystal-like substance was indeed decomposed, but what surprised him was that the mechanical insects did not obtain a microscopic model of this red crystal!

The unfavorable "phagocytosis * identification technique" failed! This is a situation that Nie Yun has never encountered.

In his induction, although the red crystal appeared to be completely decomposed by mechanical insects on the surface, the decomposition was not complete, and soon he found the cause of this situation.

We know that the scale of the mechanical worm itself is the level of the nucleus, and the scale of its decomposition is the same, and the basic microstructure of this red crystal ... is even smaller than the nucleus!

"There are even natural crystals of this structure?" Nie Yun was inexplicably surprised.

Although the mechanical worm can't completely decompose this crystal, it can be done by re-kneading the building block on the micro scale.

Because the content of this red crystal is too scarce, Nie Yun then swallowed some soil, and then a small red sesame-sized particle slowly grew in the palm of his hand. Nie Yun placed it carefully on the index finger Observe.

The surface is very smooth, red crystal-like, and emits a soft light outward at all times.

Nie Yun looked at the tiny crystal, and suddenly he was inexplicably feeling that he seemed to know this thing!

"This is ... energy crystal!" Nie Yun exclaimed.

When Nie Yun just got the mechanical worm, the mechanical worm once conveyed a message about absorbable energy.

The energy that can be used by mechanical insects includes solar energy, electrical energy, chemical energy, thermal energy, nuclear energy, energy crystal (focus), antimatter annihilation energy ...

After the nuclear power, this energy crystal!

Absorbing energy is the instinct of mechanical insects, so Nie Yun can also sense that the crystals on his hands are edible!

"Absorb!" He thought.

"Hiss ~" Nie Yun shivered as a whole, a huge amount of huge energy poured into this body, Nie Yun quickly shouted to stop!

"Huh! Almost bursting, which is too exaggerated!" Nie Yun, who was gleaming with leaking electricity, looked at the red crystals that seemed to be dimmed in his hand, and he felt terrified.

Just a sesame-sized piece, the energy output just moments ago is even more exaggerated than the instantaneous output power of the main energy core of the Sea Wolf!

Nie Yun knew that he had found a treasure!

Needless to say, this kind of even mechanical worms are listed as absorbable energy, but the energy crystal that the earth people have never heard of is necessarily an ultra-high density energy storage medium! An extremely precious cosmic mineral!

"Wait, that is to say, there is such a precious energy deposit inside the moon, so will it ..." Nie Yun looked at the countless black pillars.

Could it be that this is ... a mining area? !