After searching for more than a dozen similar prismatic crystals, they may not be astonishing as the ruins in front of them.

Half an hour later, when Lu Yuan stood on the sand dunes and looked down, more than ten kilometers away, on the desert Gobi, nearly half buried by sand and dust. The exposed part was nearly 100 meters high and the length exceeded several thousand meters in front of him.

The surface area of ​​this planet is similar to that of the Earth. Lu Yuan only searched and found the strong reflection of the prismatic crystals, but he did not expect that there would be such distinctive artificial buildings on this planet.

“…It seems that there is really an extraterrestrial civilization.”

Lu Yuan's expression was solemn. What does the existence of extraterrestrial civilization mean? It shows that the unknown organisms on Mars may have come to Earth hundreds or tens of millions of years ago. So what was their purpose in coming to Earth? What happened to Earth? What did they encounter on Earth? They were sealed underground and in the belly of the mountain?

There are too many questions that are unknown. Unless he really spends countless time on the time to pursue the truth in the past, these truths may be buried in the long river of time.

But maybe...he can find something here.

Lu Yuan took a step forward and instantly appeared more than ten kilometers away.

"Scroll."

When he landed on the dry sand, Lu Yuan looked up slightly and observed closely, he found that the long-deserted building was actually made of metal shells. I don’t know if it was because of the special alloy or because there was too little moisture here. These metal shells were stained with a lot of sand and dust, and did not rust.

It was a huge hole in front of him, with a diameter of about ten meters. Under the dim sunlight, the inside was pitch black and there was something waiting for him.

Lu Yuan's eyes quickly turned into solid black black. In just a moment, he frowned and his eyes turned back normal.

He walked forward without hesitation. The dark environment did not have much impact on him. Instead, the complex structure, beams and dilapidated cables inside the building made Lu Yuan realize that the building in front of him was at least made by a civilization no less than the earth's civilization in the 21st century. The volume of the building alone was no less than that of the metal used by the dozen Ford aircraft carriers.

How could this be created by backward civilization?

"It shouldn't be wasted for too long..."

Lu Yuan glanced left and right, and found a rough figure in his heart that the building was abandoned for no more than fifteen years. The reason for saying this is not just the new and old appearance of the building, but also...

"Bang bang bang..."

Suddenly, a huge movement of metal hitting appeared, which seemed to be harsh in this quiet environment, and did not seem to give Lu Yuan too much reaction time. Two red lights flashed in the dark, like a demon peeking in the dark crawling out of hell.

For normal humans, they can hardly see anything in an environment without lights. Unfortunately, Lu Yuan did not work at this time. His pupils dilated, and he could see the faint light in his eyes, which was enough to clearly see what he was peeping in the dark.

“Huh?”

When standing outside, Lu Yuan noticed that there was an abnormal heat source signal inside the building, but he didn't know what it was. When these heat source signals came out, he was surprised to see that three steel spiders with ferocious appearances, like hundreds of times enlarged, quickly crawled over with their sharp and slender metal feet, and surrounded him in the middle.

At a height of nearly four meters, each metal is more than five meters long, especially the pair of steel chevrons at the front, with sharp serrations side by side, which makes you scary just by looking at it. Not to mention the four black barrels exposed in front of the chest plate.

This is not a creature in nature, it is simply an artificially made weapon.

This shape made Lu Yuan extremely curious. Is there arthropods of spider species on extraterrestrial planets?

No, maybe it is not an imitation spider, but such a multi-legged arthropod structure can be very stable and balanced, and under the optimized program algorithm, it shows better flexibility in complex terrain.

The same goes for the barrel.

In the history of the development of weapons, when entering the thermal weapon stage, whether it is a gunpowder weapon or a kinetic electromagnetic weapon, it is an inevitable technology tree that can provide accurate ballistic gun barrels.

However, this flexible mechanical spider cannot achieve the current technology of the earth.

Just as Lu Yuan was thinking, the three mechanical steel spiders surrounding him suddenly made a sharp sound and entered his ears.

"Huh, is this...high frequency?"

Most of the normal sounds used by humans for communication are between 200 Hz and 8000 Hz. As humans get older, it becomes more difficult to distinguish high-frequency sounds above 8000 Hz.

This high-frequency sound suddenly sounded from three mechanical steel spiders was almost impossible to hear in normal human ears, but it was sharp to the point where Lu Yuan's ears were sharp and sharp. He immediately noticed that there were breaking sentences similar to human language in this high-frequency sound, which was logical.

Human language has a clear distinction between animal language, that is, abstract thinking and pronunciation, and there are very clear characteristics in the syllables, words, phrases, and sentences produced by sounds, which are incomparable to the animal's call.

There is not any regular noise in the high-frequency sounds sent by these mechanical spiders, which made Lu Yuan realize at the first time that the other party might be having a conversation with him or trying to communicate?

However, if both parties do not understand each other's language rules, this kind of communication will undoubtedly fail.

However, before Lu Yuan could think further, this harsh high-frequency sound suddenly dropped, and in just a moment it dropped to around 2,000 Hz, which was within the range of sounds that humans could hear and communicate normally.

“minkdiedieyk…”

Of course I still can't understand.

Lu Yuan shook his head and used his hand to signal that he couldn't understand. He laughed in silence after he made such a move. The movement of shaking his head on the earth may have different meanings among different ethnic groups, let alone on extraterrestrial planets?

But then again, when I discovered the extraterrestrial life that could move so quickly, should I say that he is lucky or is he poor?

Such communication seems to have no meaning.

I don’t know if these three mechanical steel spiders also noticed this problem. Soon, they stopped making unknown sounds, but they did not leave and still surrounded Lu Yuan in the center.

This is troublesome. Since the other party makes a sound, it means that the other party has not evolved to communicate with brain waves, and still needs sound as an auxiliary to communication. However, the problem is that without language and text comparison, if you want to understand what the other party means, it is almost an impossible task.

Especially, the pronunciation organs of extraterrestrial life are different from those of humans, which makes it even more problematic.

Although humans have different languages ​​between different ethnic groups, because of the same pronunciation organs, similar single consonants will appear in the sound. However, if even the pronunciation organs are different, the sound will be completely different, north and south.

I can't communicate, so it doesn't seem to make any sense to stay here.

And the other party doesn't seem to be friendly either.

Lu Yuan suddenly felt a sudden change in his heart, turned around and saw more than a dozen people... Should he say they were humans?

This seems to be impossible to describe by people.

No one has a skin appearance similar to snake scales, nor will anyone have four pairs of eyes on the head, no normal breathing organs such as nose, no hair, and two pairs of wings on the back, I don’t know if they can be used for flying. However, the dense tentacle-like organs growing on the chest look very flexible and float around as they move.

By the way, they rely on several pairs of arthropods to walk, and they can quickly climb and move when they step on the ground. When they see them coming from Lu Yuan, the speed is about the level of a normal person trotting.
Chapter completed!