** A creature several circles larger than the other xenomorphs burned to ashes in the scorching stream of plasma. The other instances, seeing that their leader was dead, swarmed into the depths of the cavern.

Liu Yuxin sighed, and her body relaxed. They may not be very powerful, but they are very good at hiding their tracks, and they know how to cooperate, and even know a little strategy. If it weren't for his keen sense, the sneak attack just now would have made him hate on the spot.

Liu Yuxin squatted down, rummaged through the corpse at his feet, and used the instruments on the mecha to do some simple scans of it.

These creatures are likely to be branches of humans, and their body structure is very similar to that of humans, but it may be that because they have lived underground for a long time in a place of constant low temperature, the hair that assists in heat dissipation has been degraded, the skin has become extremely white and smooth, and the surface is also covered with abundant nerve cells to sense the surrounding environment.

Liu Yuxin stood up and checked her surroundings.

The cave where he is located has very obvious traces of modern construction, in addition to the various steel materials used to strengthen the cave, there are also many other artificial equipment that has rotted out of shape. It seems that someone discovered this place a long time ago and developed it to a certain extent.

Liu Yuxin, who could no longer find any useful clues, abandoned the corpses all over the ground and entered the depths of the cave.

Further inside, there is an elegant and quiet stalactite forest, with conical stone pillars interlaced up and down, trickling streams around her, all kinds of aquatic creatures swimming around the water and various mosses and fungi on the rock wall, which made Liu Yuxin almost suspect that she had come to the water town in the south of the Yangtze River.

It's a famous desert area! How can there be such a unique landform?

With doubts in her stomach, Liu Yuxin continued to walk in the empty underground cave. Suddenly, Liu Yuxin's eyes were attracted by an improvised defensive position on the open ground in front of her.

The messy position consisted of simple steel skeletons filled with sandbags, which had rotted over the course of a hundred years, and the sand and dirt inside had fallen haphazardly to the ground, burying the ground along with the traces of previous battles. Liu Yuxin reached out and took out a few high-level dual-purpose rapid-fire guns that were common in TV dramas before, looking at the standard of those weapons, it seems that the years are quite old.

It seems that Area C** discovered this place before the alliance was formed, and had an encounter with those xenos. Based on the premise that large-caliber weapons can inflict certain damage on those second- and third-order xenomorphs, Area C must have suffered a lot at that time, because it was difficult for large equipment to be deployed through the previous hole.

It may be precisely because of the failure of several encirclement and suppression of xenomorphic creatures underground that Area C** has designated this desert as a special site for nuclear testing, using the strongest weapons of mankind to prevent the damage caused by these creatures suddenly emerging from the surface.

If we had known in advance that this underground would lead to the remains of another glorious civilization, perhaps the fate of this region would have been different, right?

The underground cave is not very long, less than ten kilometers away, and at its end is a wall of strange material, on which are carved with delicate and unusual patterns. In the middle of this wall, there is a gap several meters wide, and it is from there that the water that maintains the entire karst cave ecology keeps flowing out.

Do you want to go in or not?

Looking at the incision at the edge of the gap that was burned so smooth into the mirror, Liu Yuxin's heart retreated, this is obviously the trace of a high-energy explosion, this energy not only broke the outer wall, I am afraid that even the entire underground cave is its masterpiece. An explosion of energy of this magnitude only opened a small hole more than ten meters in the wall, which shows how high its technological content is.

It's just the outer wall!

After thinking about it for a while, Liu Yuxin decided to contact Professor Sun and them first, maybe he could provide him with some useful information.

Liu Yuxin turned on the communicator, but found that there was only clutter inside, which indicated that there must be a high interference source nearby, blocking all the surrounding signals.

Just when Liu Yuxin was in a dilemma, an angry xenomorph broke into Liu Yuxin's perception!

Its appearance was the same as the xenomorph that Liu Yuxin had just put down at the entrance of the cave, but it was taller and stronger, it seemed to have just returned from hunting on the ground, and its white hair was covered with some xenos that only found on the surface.

It presumably found its own species lying at the entrance of the cave, with two unusually bright red blobs on its white cheeks.

If Liu Yuxin doesn't take any measures, they will meet in a narrow way in ten seconds.

After glancing at the biodetection radar of her mecha, Liu Yuxin decisively gave up the idea of breaking through head-on and got into the broken wall, and the red and purple biomarkers on the radar reminded Liu Yuxin that this was far from the ordinary xenomorph he had encountered before.

After drilling into the wall, there was a different hole, and Liu Yuxin, who entered it, found herself on top of a circular bridge, with jade-colored and mellow stairs under her feet, and the dense white mist filled it, rendering the whole place like heaven and earth.

The dense fog slowly swells and moves through the space with the air current, condensing into a string of water droplets as long as it is close to the opening, and converging into a trickle of water, which becomes an inexhaustible source of underground water in the cave.

Even this breathtaking spectacle could not make Liu Yuxin stop for half a second, and he relied on his extraordinary perception to drive the mecha along the descending staircase and run rapidly.

After such a run, Liu Yuxin knew how big this place was, and she ran at full speed for dozens of minutes, but she hadn't even reached the bottom of the building. But fortunately, the chaser behind him a few minutes ago finally stopped his steps and walked straight into the wall, which gave Liu Yuxin a chance to breathe.

After resting for a while, Liu Yuxin curiously walked to the place where the xenomorph disappeared, and after it entered the wall, Liu Yuxin lost its whereabouts, it seems that this wall has a shielding effect on his perception. Liu Yuxin looked closely at the wall, but she couldn't see any difference from other places, except that the patterns carved on it were more complicated.

Liu Yuxin pressed her face against the wall, extending her perception as if she had fallen into the mire inch by inch. A few minutes later, Liu Yuxin was light, and she entered a passage inexplicably. Liu Yu, who staggered two steps, stood up straight and observed the surrounding environment.

It was a smooth and spacious passage to the base, and the shimmering walls were stamped with various signs and symbols, but since Liu Yuxin didn't know the words, she didn't know what they meant. Liu Yuxin walked carefully in the aisle, trying to avoid touching anything to avoid triggering any kind of accident.

looked at the radar of his mecha, and it was calm, but Liu Yuxin knew that this did not mean that he was safe. These walls seem to have the effect of absorbing various detection waves, and the detection equipment on the mecha receives almost no feedback in this building, and the only thing Liu Yuxin can rely on now is her own perception.

A ripple rose on one of the walls, and it began to ripple like the surface of the water. Liu Yuxin rushed over with a "whew", knocking down the xenomorph that had just come out of the wall with all his might.

The hard fist slammed into the xenomorph's head before it could react, and it fell to the ground without saying a word. Liu Yuxin couldn't care whether it was dead or alive, and dragged it into a corner. Then he passed through where the xenomorph had just come out.

It's a long road again!

Liu Yuxin secretly complained in her heart, feeling like the protagonist in a role-playing game who is clearing the maze......

While walking in a wide aisle, Liu Yuxin sensed two xenomorphs approaching him, and Liu Yuxin, who could not avoid it, was about to pull out his long sword and prepare to fight them, when a mechanical arm pulled him into the room.

Careless!

Liu Yuxin turned around suddenly, but the situation made him stunned.

Directly opposite is a cute little gnome, dressed in overalls with many bulges, and one hand of the hovering half-body robot being manipulated is still on his wrist. At this moment, he was saying something in his mouth, but unfortunately Liu Yuxin didn't understand a word.

Seeing that Liu Yuxin didn't react, the little dwarf was a little puzzled, and after looking at Liu Yuxin's mecha a few times, he shot a beam of yellow light at the signal recognition area of his mecha.

"There is an external information source requesting access, is it allowed?"

After receiving the signal, the mecha suddenly popped up a link application.

"Allow Access"

As soon as Liu Yuxin's words fell, the screen in the mecha flashed a few times, and then automatically shut down.

Worst! It can't be that the host has been compromised, right?

Liu Yuxin's heart suddenly burst out, and she was about to find a way to restart the mecha.

"Who are you? How did you find it here? ”

Liu Yuxin's communicator was the first to hear the other party's question.

"Huh!"

Liu Yuxin couldn't help but be amazed by such a change, wasn't there still a language barrier just now?

"Don't be surprised, I exchanged data with your AL just now, and your language is not difficult for us to decipher."

"How did you get here with authentication?"

"Authentication?"

Looks like no one mentioned this to him along the way!

"It seems that you are not an envoy sent by the Heavenly Palace......"

The little gnome looked a little lost.

"Looks like you need help? Can you tell me about it? Maybe I can help a little. ”

"It's useless!"

The little dwarf glanced at Liu Yuxin's mecha a few times:

"Even if their mecha is a water combat type, it is not comparable to the rags on your body, and outsiders can't imagine their strength at all!"

"Not necessarily!"

Liu Yuxin bounced herself out of the mecha, took out the jade slip from her arms and shook it in front of the little dwarf.

"Open the door and !!"

Liu Yuxin's jade Jane, who had been ignorant of all this, made the little dwarf look poopy, and he pulled Liu Yuxin:

"Okay, you come with me!"