**Amid the "squeaking" sound of the explosion of plasma piercing through the air, a creature that was several circles larger than other alien species burned into ashes in the hot plasma current. Other individuals saw that their leader was dead and rushed into the depths of the cave.

Liu Yuxin breathed a sigh of relief and relaxed her body. This group of creatures may not be very powerful, but they are very good at hiding their own actions and knowing how to cooperate, and even knowing some strategies. If it weren't for their keen perception, the sneak attack just now would have made him feel regretful on the spot.

Liu Yuxin squatted down, flipped through the body beside her feet, and used the instruments on the mecha to make some simple scans of it.

These organisms are most likely branches of humans, and the structure of the body is very similar to that of humans. However, because they have lived in a constant low temperature underground for a long time, the hair that assists in heat dissipation has been completely degenerated, the skin has become extremely white and smooth, and the surface is also covered with rich nerve cells to sense the surrounding environment.

Liu Yuxin stood up and checked her surroundings.

The cave I am in has very obvious traces of modern construction. In addition to the various steel materials used to reinforce the cave, there are also many other artificial equipment that are already rotten. 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.

Walking further inside, there is a quiet and elegant stalactite forest, with conical stone pillars of things staggered up and down, and a trickle of streams around, various aquatic organisms and mosses and fungi on the rock walls that wander around the water, which made Liu Yuxin almost suspected that she had arrived in the Jiangnan water town.

This is a famous desert area! How could there be such a unique landform?

With full of doubts, Liu Yuxin continued to walk in the empty underground cave. Suddenly, Liu Yuxin's eyes were attracted by a simple defensive position on the open ground ahead.

This messy position is filled with sandbags in a simple steel skeleton. After a hundred years of vicissitudes, the bags have rotted, and the sand inside is randomly poured on the ground, burying the ground with the traces of previous battles. Liu Yuxin reached out and pulled out several Gaoping dual-purpose rapid-fire cannons that were common in TV series in the past. Judging from the standards of those weapons, it seems that time has been quite old.

It seems that before the alliance was established, the ** of the C area discovered this place and had an encounter with those aliens. Based on the premise that large-caliber weapons can give certain damage to those second- and third-level aliens, the C area must have suffered a lot of losses at that time, because it was difficult for large equipment to be deployed through the previous hole, which was not big or small.

Perhaps it was because several encirclements and suppression of alien creatures underground were declared unsuccessful, and Area C was allowed to divide this desert into a special place for nuclear testing, and use the strongest weapon of humans to prevent the damage caused by the sudden rise of these creatures on the surface.

If I had known in advance that this underground ruins lead to another brilliant civilization, perhaps the fate of this area would have been different?

The underground cave is not very long, only less than ten kilometers. At the end of it is a wall made of strange materials, with delicate and unusual patterns engraved on it. In the middle of this wall, there is a gap several meters wide, and the water flow that maintains the entire cave ecology is constantly flowing out from there.

Should I go in?

Looking at the cut at the edge of the gap that was burnt smoothly into the mirror, Liu Yuxin felt aback. This was obviously a sign of a high-energy explosion. This energy not only broke the outer wall, but was probably its masterpiece. This energy explosion of this magnitude only opened a small hole more than ten meters in size on the wall, which shows how high its technological content is.

This is just the outer wall!

After much consideration, Liu Yuxin decided to contact Professor Sun and the others first, perhaps he could provide himself with some useful information.

Liu Yuxin turned on the communicator, but found that there were only clutter inside, which means there must be high interference sources nearby, blocking all the surrounding signals.

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

Its appearance is exactly the same as the alien species that Liu Yuxin had just put down at the entrance of the cave, but it is taller and stronger. It seems that it has just returned from hunting on the ground, and the white hair covered all over its body is wrapped with some alien species that are only found on the surface.

It probably found two extremely gorgeous red balls that fell on the entrance of the cave.

If Liu Yuxin does not take any measures, they will meet in a narrow road in more than ten seconds.

After glanced at the biological detection radar of his mecha, Liu Yuxin decisively gave up the idea of ​​a frontal breakthrough and got into the broken wall. The red and purple biological logo on the radar reminded Liu Yuxin that this was far from the ordinary alien species she had encountered before.

After drilling into the wall, there was another world. Liu Yuxin, who entered it, found that she was on a circular bridge, with round jade-colored steps under her feet, and misty white mist filled it, rendering the whole place like heaven and earth.

The dense mist slowly surging and moving in the space with the airflow. As long as it approaches the gap, it condenses into a string of water droplets and gathers into a trickle to become an inexhaustible source of groundwater in the cave.

Even this amazing wonder did not allow Liu Yuxin to stay for half a second. He drove the mecha along the downward ladder with his extraordinary perception.

After running like this, Liu Yuxin realized how big this place was. She ran at full speed for dozens of minutes and had not reached the bottom of the building. Fortunately, the chaser behind her several minutes ago finally stopped his pace and walked straight into the wall, which gave Liu Yuxin a chance to breathe.

After resting for a while, Liu Yuxin walked curiously to the place where the alien species disappeared. After it entered the wall, Liu Yuxin lost its whereabouts. It seemed that this wall had a shielding effect on his perception. Liu Yuxin carefully observed the wall, but could not see any difference from other places, except that the patterns carved on it were more complicated.

Liu Yuxin pressed her face against the wall and extended her perception as if she had fallen into a mud inch by inch. A few minutes later, Liu Yuxin lightened her whole body and inexplicably entered a passage. Liu Yu, who had staggered for two steps, stood up straight and observed the surrounding environment.

This is a smooth and spacious base passage, with various signs and symbols printed on the glittering walls, but since Liu Yuxin did not recognize the words, she knew nothing about the meaning they represented. Liu Yuxin walked carefully in the aisle, trying to avoid touching anything to avoid triggering any accident.

After looking at the radar of his mecha, it was calm, but Liu Yuxin knew that this did not mean that he was safe. These walls seemed to have the effect of absorbing various detection waves. The detection equipment on the mecha almost received no feedback in this building. The only thing Liu Yuxin could rely on now is her perception.

A ripples appeared on one wall, and began to ripple like the water surface. Liu Yuxin rushed over with a "scream" and knocked down the alien species that had just come out of the wall with all her might.

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

Another long corridor!

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

While walking in a spacious aisle, Liu Yuxin sensed two alien species coming towards her again. Liu Yuxin, who was unavoidable, was about to draw out her long sword to fight them, but a robotic arm pulled him into the room.

Be careless!

Liu Yuxin suddenly turned around, but the situation was shocked.

Directly opposite was a cute little dwarf. He was wearing a lot of raised work clothes, and the hand of the floating half-body robot was being manipulated was still on his wrist. At this moment, he was talking about something in his mouth, but unfortunately Liu Yuxin didn't understand a single word.

Seeing that Liu Yuxin did not respond, the little dwarf was a little confused. After looking at Liu Yuxin's mecha several times, he shot a beam of yellow light towards the signal recognition area of ​​his mecha.

"A foreign information source requests access, is it allowed?"

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

"Accessible"

As soon as Liu Yuxin finished speaking, the screen in the mecha flashed a few times and then turned off automatically.

Oops! Could it be that the host was hacked, right?

Liu Yuxin's heart was a sudden surprise and was about to find a way to restart the mecha.

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

Liu Yuxin's communicator first heard the other party's questioning.

"Huh!"

Liu Yuxin couldn't help but be amazed at this change. Didn't she still have a speech just now?

"Don't be surprised, I interacted with your al just now, and your language is not difficult to crack for us."

"How did you come here with your identity verification?"

“Authentication?”

It seems that no one mentioned this to him along the way!

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

The little dwarf looks a little disappointed.

"It seems you need help? Can you tell me? Maybe I can help a little."

"it's useless!"

The little dwarf glanced at Liu Yuxin's mecha:

"Even if their mechas are water war type, they are not comparable to the junk on your body. Outsiders can't imagine their strength at all!"

"This is not necessarily true!"

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 jade plate!!!"

Liu Yuxin's jade slip, which had been unknown, made the little dwarf look defecated. He pulled Liu Yuxin:
Chapter completed!