"Smack!"

The hard ground violently stirred up a faint ripple, mixed with rubble that swept all around, sending out a deafening roar. As the rubble cleared down, X2's gray-black armor was revealed, and it was seen crouching on the ground, its hands propped up, maintaining this posture motionless, like a steel puppet.

Taking a breath, Luo Xu slowly straightened up, and landed freely from the sky just now, the excitement was completely explosive, and bungee jumping could not be compared, he suddenly felt that wearing x2 to fall into the sky, there was no need to go skydiving to find excitement, just because the excitement of the two was not at the same level at all, and the safety of x2 was also more than that of skydiving.

The place where he chose to fall was not far from the forward temporary base, looking at the base, as soon as the propeller was opened, Luo Xu's legs and feet were forced, and the hard ground was as if it had been violently impacted, and the place where he landed was cracked layer by layer, and the soil under the ground surged and squirmed sharply, and in an instant, it was flying out alive by a huge force!

"Whew!"

The piercing sound swirled endlessly, and the air was like viscous muddy water, which was instantly slashed from both sides, and the figure of the X2 armor in place suddenly disappeared, as if a distance in the middle was omitted, and the lightning flashed again, and it was already a distance of hundreds of meters, appearing in the distance.

Regardless of the large cost of manufacturing, Bob is always asked to carry out maintenance and software upgrades, and undergo hardware modifications, compared with the original version, both survivability and combat ability are greatly exceeded. In particular, the application of neuromechanical principles is undoubtedly like a tiger in the hands of Luo Xu, a nerve whose reaction speed exceeds that of ordinary people. The current X2 is not a monster equipment that ordinary people can use at all, and without taking into account the physical fitness and reflexes of ordinary people, even if ordinary people wear it, they can't even play one-tenth of the effect, and they are more likely to be injured because of it.

The MX46 armed wheeled infantry fighting vehicle at the forward base had already been prepared, Luo Xu sat in the driver's seat, and the car automatically started forward, carrying some instruments and equipment and Luo Xu set off towards the pyramid. At this time, the wind is still shrinking, from the wind of about five levels weakened to one or two at this time, there is no sound of the wind tearing, there is more mysterious silence between heaven and earth, looking out from the porthole, the straight cliffs and mountains are sharpened, as if they are gloomy and ghostly, and there is no moving object, just quiet, quiet, quiet!

Driving alone in a strange place far from the earth, there is no one to rely on but Luo Xu, no, or the only one who can rely on Bob, if this kind of AI is also human.

"Well, Bob is much more reliable than humans......"

As he muttered, the majestic surface of the pyramid was revealed, and infantry fighting vehicles were approaching the unidentified extraterrestrial structure. Seeing it with his own eyes, different from the picture transmitted back from the ordinary environment, it still seems more shocking, Luo Xu used his arm armor to compare the height of the pyramid in the air, and secretly said, if there is this ancient ruin on the earth, what Egyptian pyramids and the Great Wall of China are not even qualified to compare, or people will not want to compare them, because this building, in the imagination of human beings, probably only gods can build it.

Luo Xu remembers that the United States used to use a place in Berlin, Germany, to fill in a mountain for the purpose of monitoring East Germany and the Soviet Union, and thousands of trucks transported soil every day, and it took more than 20 years to pile up a mountain of dirt, so how much soil would it take to replace the pyramid in front of you? How long does it take? Moreover, this is not a simple mountain reclamation.

Just thinking about the underground space under the pyramid, Luo Xu felt dizzy, such a large space needs to hollow out 5.5 billion tons of soil, and if he does it, it will not be able to be dug in a short time.

The car slowly stopped at the gap in the pyramid, and the first thing Luo Xu saw when he got out of the car was that the K200 crawler robot was standing quietly on the side, like a guarded goalkeeper. The ground here is covered with small rocks with sharp corners, half buried in the gray sand, half revealing sharp corners, and if you were wearing ordinary shoes, you would definitely not be able to escape the tingling sensation.

This time he entered in person, followed by two rotary-wing drones and a K200, and the MX46 was too large to stay outside and wait. Walking into the passage inside the pyramid, he had already seen the murals through the screen, so he no longer looked closely, but walked directly to the right passage.

The arrival of Luo Xu, an outsider, broke the tranquility that had been precipitated for many years, and it was impossible to ignore such movements unless all the creatures in this building died, so Luo Xu's conclusion was that it was really possible that all of them were dead, after all, it was a long time of more than 100,000 years, and no matter what happened, there was a chance that something would happen. Diseases, wars, and so on and so forth, are too numerous to mention.

Walking in such a closed and unfamiliar and silent passage, there are many mysterious patterns on the surrounding stone walls, although Luo Xu is not creepy, but he also feels uncomfortable, and he can't help but speed up his pace, and soon comes to the loophole gap in the picture transmitted back by the gyroplane.

This loophole gap is in front of the blocked passage, forming a bottomless hole, it is from here that the gyroplane flew in to explore, but unfortunately the effect is not great, and now Luo Xu personally came to the scene to decide, first go to the bottom of the pyramid to see, or blast the stone wall that blocked the passage, and continue to explore.

After a moment's thought, he decided to explore the bottom of the pyramid before seeing if there was a need to blast the stone wall blocking the passage. After making a decision, he no longer hesitated, Luo Xu jumped and fell into a deep and secluded loophole, the thruster behind him activated, and the free fall regained its balance in just a few seconds, and it was still in the air.

X2's infrared scan began, and the neuromechanical interface immediately popped up a thermal imaging photo, which showed a vast underground surface more than 900 meters deep, with the ambient temperature well below the upper temperature, which, according to calculations, was below -200°C.

Luo Xu gasped, "How can this be?" He swept his eyes, and another image was displayed on the interface, with a dark cyan background, a "ten" area slightly warmer than the surrounding area, and in the center of the "ten" area, three extremely cyan light clusters were eye-catching.

"What is this?"

Luo Xu was a little puzzled, he didn't think much about it, as soon as his arm was raised, a flare shot straight out, after flying a distance of more than a hundred meters, the time fuse ignited, and the metal combustibles, oxides and adhesives contained inside were mixed and burned, bursting out with an incomparably dazzling light, and suddenly the underground space was all shrouded in dazzling light, and the entire underground environment was also truly and reliably exposed to Luo Xu's eyes.

To Luo Xu's surprise, a large area of liquid water was almost stationary underground, forming a huge underground lake, and in the center of the lake, it was cut off by a "ten" shaped land, none of which was important, the important thing was the intersection of the "ten" land in this lake, and the three reading buildings were placed on the ground.

"Strange thing, how can you make three buildings down there?"

Luo Xu felt strange at the same time, but also puzzled, at this time, a new piece of information on the interface was refreshed, and it turned out that the so-called lake below turned out to be liquid nitrogen, so it was no wonder why the temperature was so low. It's just that so much liquid nitrogen has formed a lake, what is it used for? To be able to build this pyramid, the technical means must be extraordinary, so it is not surprising that a huge amount of liquid nitrogen can be made, but what is the use of it?

The x2 was designed to be used in space, and the temperature of -200°C was not much of a threat, Luo Xu paused slightly, and the thruster ejected a stream of high-energy electrons, flying directly down with him. The two rotorcraft drones are not keeping up, and the temperature below has no effect on the X2, which does not mean that the gyroplane can also be nothing, but I am afraid that they will be scrapped directly because the temperature is too low when they are halfway down.

The reverse current heat exchanger is operating normally, the temperature and humidity inside the X2 armor are always stable, Luo Xu's eyes are always paying attention to the data situation next to the interface, and he immediately stops falling as soon as something is wrong, fortunately everything is normal, and when he landed steadily on the "ten" land, the outer surface of the armor was stained with a thick layer of frost.

The small searchlights on both sides of the shoulders are activated, because of the cold nuclear fusion, the X2 has never been stingy with the use and output of energy, resulting in the light of these two small searchlights exceeding 4000 lumens, and the maximum distance is 700 meters.

Looking around, the position he was currently standing in was only a few meters away from the liquid nitrogen lake, and he didn't know how deep this lake was, it was quiet and deep and terrifying, Luo Xu retracted his gaze after a few glances, and refocused his gaze on the three buildings in the distance.

The three buildings, the searchlight swept past, and his silhouette could be faintly seen, and when he gradually quickened his pace, the three buildings arranged in a straight line were also completely revealed under the light.

"It's ......"

The shape of the three buildings is very simple, that is, a cube about ten meters high, the surface is made of dark metallic material, and it is quietly displayed there I don't know how long has passed. But because of the simple shape of these three buildings, Luo Xu was even more puzzled, he scanned it downward, and did not find any entrances and exits, as if these were three solid metal bumps.

But when he turned to the back of the three buildings, he found a new clue.

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