The annular dam stretches for hundreds of miles, bringing the entire hilly low-lying land to a tight encirclement, and the height of the dam is also terrifying, from top to bottom, roughly visually inspected, how can there be a depth of half a kilometer.

Within a radius of 100 miles, almost all the hills, the highest point is only half of the dam, and it is difficult to imagine how many cubic meters there would be if the interior was full of water.

The building of the alien civilization, in the eyes of Lu Fan, there are also many doubts, the height of the dam, there is no need to exceed the high point of the mountain, to add such a high dam body, the cost is extremely high, the time and effort are not counted, and the difficulty of construction is also extreme.

Although Lu Fan is not from a civil engineering background, he still has a certain understanding of ancient buildings, if such a dam is made of cement, just to make an internal frame is a huge project, and the required steel bars are calculated in tens of millions of tons.

If a civilization technology has reached the level of transforming the planet's environment, there is no need to construct such a huge building, modern science and technology can completely store water underground, digging an underground artificial lake, than this kind of project is much more time-saving and labor-saving, but also much stronger.

The dam construction that Lu Fan witnessed can only be called in one word, arrogant construction! The designer is even more stupid, and the uncivilized dead brain is the best description to use on it.

It is to complete the design of the building with the arrogant mentality that the bigger the building, the more useful it is.

The practicality of the dam has yet to be verified, but Lu Fan has to admit that at least visually, it can still give people an incomparably shocking appearance.

The purpose of building such a giant dam is not just to make people look majestic, right? Lu Fan smiled. Leaving this boring suspicion behind, they swept over the high dam with the Red Moon and entered the center of the deep dam.

Now. The true face of the dam body has been shown in front of Lu Fan's eyes, and the width of these sheep hundred miles of magnificent dam body has reached an appalling twenty meters wide, and the height is about seven hundred meters near some mountains.

Lu Fan stuck out his tongue, and could only use a frightened expression. to express what you see and hear. However, after entering the reservoir, there are some differences that cannot be seen at high altitudes. Now it's reflected.

After comparing left and right, I found that the height of some dams was not the same as that of Pingchuan, such as the highest dam that Lu Fan saw before, and the lowest dam. There is a gap of 200 meters.

Doubts flashed in Lu Fan's mind. The height of the reservoir cannot be high or low, which is unreasonable, could it be that what you see in front of you is not a dam?

If it's not a dam, then what?

Curiosity rose to the peak, Lu Fan pulled the mecha and plummeted down to the low-lying bottom, wanting to find out.

The bottom of the reservoir is up to 500 meters deep. It's empty, and there's nothing out of the ordinary. After going around, not to mention stagnant water, it is difficult to see a stone the size of a goose egg. The flat ground, similar in color to the earth outside the warehouse, is a dark brown color, and should belong to the naturally formed ground. It seems that the alien civilization has not made a big move here, and even the library has been transformed.

Lu Fan refocused his gaze on the towering embankment, and after a closer look, he finally found the strangeness.

I thought it was a flat wall, but if you zoom in and observe, you will find that every 20 meters or so, there will be a concave and convex, the area is not large, each one meter square, and the depth is only 50 centimeters, and you can see the end at a glance.

In fact, the bumps themselves are not surprising, the inner hollow is not surprising. It's just that when you step back and look at it with a larger field of view, you will find that these concave and convex form a dense honeycomb grid, which is hideous and chilling on the outside.

In addition to these peculiarities, Lu Fan flew all over the dam, and could not find any clues, no words, no residential areas, and no flood gates.

It is almost certain that the building similar to the embankment is not a dam, but just a fenced valley, and what the function is, Lu Fan really can't imagine.

On the way back, Lu Fan thought about it, but he couldn't figure out what the alien civilization he had never met, on a young new planet, what would be the purpose of building such a building.

High encircled, built by the mountain, the terrain is dangerous, easy to defend and difficult to attack, the building in the mountain is a fortress and a defensive fortification if it is placed in the era of cold weapons.

But the data of the intelligent brain has confirmed that this new planet is still in the young age of its life cycle, and the surface environment does not allow the birth of intelligent life, let alone a civilization that has entered the interstellar age. However, the similar dam buildings that Lu Fan had seen before would not have been able to make such a magnificent building without advanced technology, superb construction technology, and developed means of transportation. This fundamentally excludes the masterpieces of civilization in the age of cold weapons.

The loss of this trip must be inevitable, and as soon as Lu Fan returned to the Flowing Frost spaceship, the stinky face he showed made everyone retreat, lest he take the initiative to bump into Lu Fan's gun. Except for the Red Moon, even the other ten fallen angels hid in their cabins, not daring to move around at will.

Only Huang, the dead pig was not afraid of boiling water, and floated safely opposite Lu Fan's command chair, teasing Hongling while observing Lu Fan's movements.

"I said Lu Fan boy, don't put on a stinky face, I don't eat this set of adults." When I was idle, I didn't forget to play with some of Lu Fan's nerves.

In fact, Lu Fan was just a little confused for a while, and he thought he was well-informed, but he didn't expect that there would be civilizations that would go against common sense, and he built a huge building on an uninhabited planet, but he abandoned it, causing him to go with a connoisseurship mentality, and came back and killed N brain cells.

"Lord Huang, do you think there will be such a civilization?" Huang is the only object that Lu Fan can pour bitter water at the moment, so even if he knows that Huang is teasing, he will not be angry, but seize the opportunity to make the other party annoyed a few times.

"Why not, that's your Lu Fan kid's shallow knowledge, as far as I know, the people of the Silicon Crystal Clan will be idle, go everywhere to leave some marks on the planet, and then forget about it completely."

"It's not like Ina's people, the level is not so low, and the civilization that builds the dam is close to the Federation at most, and even if it is surpassed, it will not be too much." Lu Fan retorted.

Lu Fan still had some things to hide from Huang and didn't say it directly, as far as he knew, Eva's clan empire had already perished before the disappearance of the Beginning Spirit, and even if there were those who were scattered and survived, the age was completely incompatible.

The man-made structures on Planet 9 will not exceed three million years at most, and the difference in time between the two is too much.

"Hehe, boy, how powerful do you think the Silicon Crystal Empire is? Isn't it history? When Lu Fan talked about the Ina people, Huang was a little unconvinced. However, Huang seems to know something in the meaning.

He thought that the destruction of the Origin Star of the Silicon Crystal Empire was a secret that only he knew, but when Huang said this, Lu Fan naturally wanted to test it.

"Lord Huang, could it be that you have also encountered the Silicon Crystal Clan? According to the 'Yuan' report, the Silicon Crystal Empire had disappeared long before the Holy Spirit Empire had not yet died. ”

"Hehe, 'circle' may not be accurate, but don't forget, my master's part of the institution is dedicated to exploration." This time, Huang not only leaked his mouth, but also revealed some of his secrets.

Seeing that Huang didn't know that he had entered the trap in his topic, Lu Fan smiled and said nothing, waving his hand to signal Huang to continue.

"Do you know the Beginning?" Huang asked.

Lu Fan nodded.

"At the time when I was born, because of the disappearance of Lord Shiling, the rule of the huge empire was unstable, and there were faint signs of falling apart. And my master's part of the agency is responsible for carrying out the search work. Huang said slowly alone.

"It took a full 600,000 years for my master to really trace the traces of Lord Shi Ling, and followed all the way to the past, not only discovering an extremely powerful civilization, that is, the silicon crystal empire mentioned at the beginning, but also discovering that Lord Shi Ling didn't know why he clashed with them, and actually killed them all the way."

"Think about it, what will be the consequences of the Primitive's constant strikes? I don't need to say more about the rest of the story, right? ”

It turned out that not only Lu Fan knew some secrets, but a long time ago, there were Holy Spirit people who followed the footsteps of the First Spirit in the vast cosmic void, and also found clues of the battle between the two sides in the void.

"And after that?" What Lu Fan wants to ask most is all here.

"Along the way, my master not only found many abandoned Silicon Crystal Empire planets, but also found a living Silicon Crystal Clan's residence at the edge of the star field far away, and fought with them." As soon as he said this, Huang was extremely embarrassed, and his tone revealed a look full of feelings.

"Who wins and who loses?" Lu Fan asked curiously.

"My master was defeated, fled in a panic, and lost half of the spirit, but the other party didn't get any favors, and the entire planetary group is estimated to have no more than half left."

While listening to Huang's narration of the past, I couldn't help but fall into the illusory narration of the narrative, the powerhouses of the two top civilizations collided fiercely with each other in the void, and a shocking cosmic war broke out.

Lu Fan had witnessed the remnants of the images in the fragments of time and space, and the magnificent scene of the fierce battle between the winged people and the people of the Silicon Crystal Empire in the starry sky, which is still unforgettable.

And Huang's master, who is also an extremely powerful illusory spirit powerhouse, will definitely not let go of the intensity of the battle with the Silicon Crystal Clan. Even if you can't witness it, you can follow Huang's narrative into the time and space you yearn for.

The long-term uncalming mood made Lu Fan immediately have the urge to go out to fight, and when he calmed down, he couldn't help but ask himself, is he also a war fanatic? (To be continued......)