After Ye Fan gave an order to the origin, the origin quickly understood and directly arranged for a steel battle armor to come over.

"Boom!" Two vacuum implosion bombs, whose power was reduced by 99%, were directly launched, and the powerful suction force instantly absorbed a large amount of yellow sand on the mound.

In less than three seconds, this mound formed by the condensation of yellow sand turned into a large pit more than ten meters wide, and Ye Fan was standing in the center of that pit at this time.

At the bottom of the pit, a complex structure of stones appeared, with various strange reliefs on the stones, which seemed to tell the story of a place.

"Boom!" Three more vacuum implosion bombs were fired, more than doubling the crater again, and what was hidden under the dunes finally surfaced.

This place, like some kind of large entrance, is surrounded by huge boulders as cornerstones, but you can clearly see the appearance of an entrance.

Here seems to be some kind of basement.

At this time, the large steel battle armor also came over according to Ye Fan's order, punched the boulder, and began to use the sonar mode to scan the place in detail.

Soon, the results of the scan came in.

As expected, this place is indeed an entrance, and according to the sound waves transmitted by the sonar, it seems to be a hundred meters deep and is a huge complex below.

What surprised Ye Fan even more was that these huge stones that looked simple and vicissitudes of life were actually not real stones, but a layer of stones covered by the appearance of a special metal.

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Whether it was to hide people's eyes and ears, or whether the design of this building was originally like this, Ye Fan also didn't know anything about it.

Ye Fan dismantled the ship slashing knife in his hand and threw it to the large steel battle armor, because on the narrow ground, there was no need for such a large combat weapon.

Soon, two shoulder cannons appeared on Ye Fan's steel armor, and this kind of shoulder cannon was the plasma cannon that directly melted the door of the laboratory when Ye Fan attacked the underground laboratory in Chicago last time.

Ye Fan motioned for Tang Xue to step back, and on the holographic projection, the entrance position shown by the sonar scan, quickly aimed at the two plasma cannons.

"Bang! Boom! "Two electric slurry cannons were fired, and in an instant, the boulder at the entrance melted into a huge hole.

Seeing this, the rest of the steel armor also fired the plasma cannon on their shoulders, melting away the entire boulder covering the entrance.

The boulder at the entrance seems to be connected to a power mechanism somewhere, but according to the results of the sonar scan back, the power mechanism seems to be damaged.

There was no way, Ye Fan made this decision.

Because considering that what was hidden below was too hidden, Ye Fan did not rush in, but let the other steel armors take the lead first, he walked in the middle, and Tang Xue was behind him.

The entrance that appears after melting the boulder is a staircase that goes down, and since it is below the surface and at night, the visibility is infinitely close to zero.

Therefore, the searchlight on the chest of the steel armor was turned on at full power to provide illumination for Ye Fan in the rear, and the large steel armor walking behind him was walking while installing a small locator on the wall of the cave, and constantly releasing sonar to scan the terrain.

When I went deeper than 50 meters underground, the air here was already very thin, and the traces of the boulders gradually weakened, and traces of steel began to appear.

It resembles a large, underground fortress made of various huge steel modules.

At this time, the air was very thin, and although the entrance was opened, allowing the air from outside to pour into the depths of the earth, it was always limited.

Ye Fan and Tang Xue's steel battle armor, the internal life support system has been turned on, providing a stable living environment for the two of them.

After descending for more than 300 meters, the entrance finally reached the bottom.

"Whoosh!" Two large flares were fired, and the dazzling light released by the flares directly showed everything here.

At a depth of 300 meters underground, there is a large pyramid?

Are you kidding!

"Boss, how can there be a pyramid underground?" Tang Xue couldn't hide the shock in her heart at this time, you must know that whether it is the staircase that lasts for three hundred meters, or the vast space under the ground and the pyramid in front of you, it is no longer something that the ancients could build.

It is very difficult to build such a vast underground space in a soft desert area even if humans with modern technology can do it themselves.

It can be said that this is an incomparably huge project, and the construction of this project must not be the human beings of modern society.

"I don't know, it seems that there really is a so-called ancient civilization in this world." Ye Fan also blushed at this time, and said in a deep voice.

Whether it was the dream of 10,000 years ago, or the 10,000-year-old energy rifle unearthed from Datang Heavy Industry, or the Pisces jade pendant that appeared inexplicably, it guided him all the way.

At this source, there seems to be some mysterious behind-the-scenes cooker who has been guiding him in this direction.

"Boss, it seems that all those things that suddenly attacked us on the ground came out of here." Tang Xue glanced at the various "zombies" that walked down from the pyramid and spoke.

"Well, it seems so." Ye Fan also spoke in a deep voice at this time, although he didn't know what these things had to do with him, but at least from the current point of view, it still needed to be cleaned up again.

Ye Fan didn't bother to play with them slowly at this time, and directly ordered the origin to adjust the firing rate of the energy rifles of the ten steel battle armors to the maximum.

"Lock the target, lock the target, lock the target...."

Under the control of the superb fire control system, all targets were instantly locked at the same time, and the next second, the energy rifles carried by the ten steel armors began to tilt a large number of death rays at them.

In less than ten seconds, all the "zombies" were killed, leaving only the residue of one place.

No matter what tactics you have, you can't match the speed of my gun, and my gun is ruthless.

It was because of the appearance of the Maxim machine gun that the Mongols became good at singing and dancing, and hospitable, not to mention the more advanced energy rifles.

"Master, according to the sonar scans, there seems to be some special mechanism at the top of the pyramid." The scan of the origin was uploaded to the inside of Ye Fan's steel armor, and the top of the pyramid was marked with a red flashing dot.