Lunar underground!

Nie Yun's clone looked around and was directly stunned.

It's different from what he imagined to be an empty space or an alien base full of sci-fi overtones.

It's a huge, desolate subterranean world, but it's not completely natural, it's a lot of man-made pillar structures!

As far as the eye can see, the height of this underground space is about tens of kilometers, and every hundreds of kilometers, there is a black support pillar like an optimus pillar standing high there, as if countless giant hands of the sky have opened this world!

Although the stalactite pillars in the natural cave can form a similar landscape, just looking at the color and uniformity of the distribution that is completely different from the surrounding soil, it can be judged that this must not be a natural formation, but a man-made supporting structure!

"Here...... What's going on? Nie Yun was completely shocked by the scene in front of him.

Just imagine, if this is not just the case, but the whole moon is like this, then how big this engineering would be?

Can it be completed in 5,000 years?

Nie Yun carefully observed the surrounding environment, and the ground was obviously preliminarily leveled, and there were still some subtle traces on it that were suspected to have been moved by large construction vehicles.

"Step!" Nie Yun stepped heavily under his feet, his body flew directly up to a height of hundreds of meters like a flea, and then slowly flew towards the nearest black stone pillar a few kilometers away.

This place is close to the core of the moon, and the gravitational force has been greatly weakened, almost one-tenth of the gravity of the moon's surface, about one-sixtieth of the earth's gravity, and the 200-kilogram Nie Yun clone can be described as light as a swallow here.

A scene like a volley of void appeared in this underground world, at least if Nie Yun made a movie, he wouldn't have to hang Weiya.

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

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

Nie Yun took a closer look, only to find that the original stone pillar was not all black, but had a fine black grid-like pattern covering the original gray stone pillar, and even extended to the inside of the stone pillar, which was a bit similar...... Creeper?

"Sure enough, it's weird! This seems like a means of reinforcement? Nie Yun guessed.

He tried to grab a handful of black matter and tugged at it, almost with all his strength to tear it off, the tenacity of this body was quite amazing!

Nie Yun then directly pressed his palm on this black substance, and then launched a devouring, closing his eyes and feeling it, Nie Yun opened his eyes in some surprise.

This black substance contains a large amount of metallic components, and its microstructure is similar...... Plant?!

"Could it really be a plant?" Nie Yun was stunned.

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

It took so much effort to build such an underground space, but there are no buildings here, isn't it like expanding the base or living space?

It's not like aliens are also driving Lanxiang, here is their excavator training base?

"It looks like it's a bit of a stretch...... Huh? Wait a minute! Where does the light come from? Nie Yun finally discovered another anomaly.

The underground space was extremely empty, but there was no bright light source at all, but it was as bright as day, Nie Yun carefully observed, and finally found that the light source turned out to be ...... Grey soil all around!

He leaned over and grabbed a rock to examine it carefully, then frowned, and with a hard squeeze of his hand, the rock was directly pinched into powder by him.

Then he spread out his palms and looked at the powdery substance on it, the pupils in his eyes contracted for a while, adjusted the focus, and turned into a pair of "microscopic eyes", and finally saw that there were small red crystal particles in it that could not be observed by the naked eye, and the light source was emitted from them.

"What is this?" The curious Nie Yun simply threw another Devouring * Identification Technique directly.

The powder on the palm of his hand was quickly decomposed, and then Nie Yun was stunned to find that the identification technique was ...... Failed to use!

In addition to the metal-rich soil, the red crystalline material was indeed decomposed, but to his surprise, the mechanical insects did not obtain a microstructural model of the red crystals!

The invincible "Devouring * Identification Technique" has failed! This was a situation that Nie Yun had never encountered.

In his senses, the red crystals were apparently decomposed by the mechanical bugs, but the decomposition was not complete, and he soon found the cause of the situation.

We know that the scale of the robot itself is at the level of the atomic nucleus, and the same is true of its decomposition scale, and the basic microstructure of this red crystal ...... It's even tinier than the nucleus!

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

Although the robot cannot completely disassemble the crystals, it is possible to re-knead them on a microscopic scale like building blocks.

Since the content of this red crystal was too rare, Nie Yun then devoured some more soil, and only then did a small red particle the size of a sesame seed slowly grow out of the palm of his hand, and Nie Yun carefully placed it on the tip of his index finger to observe.

The surface is smooth, red crystal, and radiates a soft glow at all times.

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

"It's ...... Energy Crystals! Nie Yun exclaimed.

When Nie Yun first obtained the mechanical worm, the mechanical worm once conveyed a message about the energy that could be absorbed.

The energy sources that can be used by the robot include solar energy, electrical energy, chemical energy, thermal energy, nuclear energy, energy crystals (emphasis added), and antimatter annihilation energy......

After nuclear energy, it is this energy crystal!

Absorbing energy is the instinct of mechanical insects, so Nie Yun can also sense the crystal in his hand...... It's edible!

"Absorb!" His mind flickered.

"Hiss~" Nie Yun's whole person shuddered, and a huge amount of energy poured into this body, and Nie Yun was so frightened that he hurriedly shouted to stop!

"Whew! I almost burst out, which is too exaggerated! Nie Yun, who was flickering with leaking electricity, looked at the red crystal in his hand that seemed to have become a little darker, and his heart palpitated.

It's just a grain the size of a sesame seed, and the instantaneous energy output just now is even more exaggerated than the instantaneous output power of the Seawolf's main energy core!

Nie Yun knew that he had found a treasure!

Needless to say, this kind of energy crystal that even mechanical insects are listed as absorbable energy, but the energy crystal that earthlings have never heard of must be 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 be ......" Nie Yun looked at the countless black stone pillars.

This is not the original ...... Is it a mining area?!