Underworld, Zone R.

No matter how many times I imagined what the underground world should look like, when I actually saw it, I found that human imagination was still full of limitations and could not fully outline another civilization.

At least that's what Tang Ling thinks.

What kind of civilization should this be? In fact, when jumping from the edge of the uneven crack and shuttling underground, you can give a rough definition, called a 'cave' civilization?

Yes, it seems that this underground race has a persistent pursuit of burrowing, so in the underground it is not the kind of deep ravine that leads directly to the R area, as imagined, but a variety of caves that are winding and intertwined.

The underground black market should love a place like this.

Because these underground races not only have a persistent pursuit of burrowing, but also should all be masters.

The caves they create are neatly lined and airy, and you don't even know what kind of technique they used, each cave has a light opening that zigzags to attract natural light from the ground.

Although in Tang Ling's opinion, this is completely something that can be solved by a luminous body, such as an oil lamp or something, after all, the underground race should not be short of oil, right? But they are still not afraid of trouble to attract natural light, can it be understood that this is a kind of obsession?

On top of that, they may not be able to hold back their itches, and from time to time they will carve some decorations on these caverns that are difficult for humans to understand.

Decoration, perhaps? It is also possible that their totems and words seem to tell an ancient history.

Because of the existence of the 'prosthetic body', these caves are all strange 'double circle' structures, that is, a small circle next to a large circle.

Imagine a scene where when the prosthesis is removed, they go to the small cave, and when the prosthesis is equipped, they go to the large cave.

However, according to human thinking, it is considered that this is a waste of engineering, and it would be better to just build it all into a large cave?

Therefore, seeing this bizarre and strange shape of double circles adjacent to each other, intertwining each other, and making the road more complicated, Tang Ling could only think that these underground races had a special obsession with making holes.

After a hundred years of exploration, these labyrinthine paths can no longer be an obstacle to progress, and according to the special marks left by humans, the road is almost unhindered.

Tang Ling's precise instinct was running fast at this time, and such a complex road was quickly imprinted in his mind, like an accurate 3D model.

After all, the only topographic map was on Andrew, and Tang Ling was unwilling to be controlled by others at this point.

The cave is very quiet, and there is no existence of any underground races, according to Eber's information, after all, the large army is gathering, and the possibility of encountering the underground race here is zero.

It's just shuttling between them, but it makes people look forward to seeing what the civilization of the underground race is like?

"What you can't see, even if you go to the R Zone, it's not their real civilization." Andrew's voice came from the front of the team, he was answering a question from someone in the previous pinnacle team, R is clearly the place where the underground race lives, why does Yang Kong say that no one understands the real underground civilization?

"Why?" Someone couldn't help but ask, and the voice was slightly high, echoing back and forth in the quiet cavern, and I don't know how far it went.

"Quiet." Andrew reprimanded in a low voice, but replied simply, "Legend has it that the true civilization of the underground races gathers in a few of their underground cities. That's the origin of their civilization, and it holds secrets about the planet. ”

"As for any R Zone, or even a larger underground gathering place, it is impossible to get a glimpse of their civilization. You can understand that it was just a barracks, barracks that invaded the ground. Can you get a glimpse of their civilization from a military camp? ”

I have to say that Andrew's knowledge is rich, and these things that are impossible to consult from the database have deepened Tang Ling's understanding of this world.

"It's a city that is curious about them." Someone couldn't help but whisper.

"It's better not to think like that. As the Rising Masters said, no one has actually entered their realm, let alone the big cities. There are more powerful people in the human race than you think, why is this still the case? Andrew dispelled the man's unrealistic curiosity with a rhetorical question.

And why? Human beings have always been creatures with endless desire to explore and full of curiosity, which seems to be an instinct engraved in genetic fragments, but driven by this instinct, they still know almost nothing about underground civilization, which can only show that the danger there is unimaginable, so that countless strong people have no return.

Even so, it would be nice to be able to take a look at Area R, and even if a place similar to a military camp can't peek at their civilization, at least it can sketch some clues.

This was Tang Ling's idea, and it was also the idea of most of the Crescent warriors of the First Reserve Battalion.

Only geniuses have such a mood, and before the battle of life and death, there is still a curiosity full of questions.

But it was a march after all, and after this question, the team fell silent again, and only the sound of rapid footsteps resounded in the cavern.

At the speed of the 1st Reserve Battalion's march, the winding cavern also allowed them to travel a full 15 minutes to reach their destination, Area R.

Tang Ling used precise instinct calculation all the way, these caves seemed to be parallel, but in fact they were winding down all the way, but this downward angle was very slight, it seemed that it was only more than 50 meters deep from the ground, and in fact it was nearly a hundred meters deep underground.

Here, you don't feel any difference from the ground, there is still air circulation, it's not stuffy, and there is still natural light coming in, but other than that, the whole R zone is filled with unusually high temperatures.

Sixty-two degrees.

This is the answer given by the instinct of precision.

If it were a pre-civilized human being, in such an environment, it would not last an hour.

Because it is not an extremely dry environment, but an underground river zigzags through the heart of the entire R area, the air here is destined to be full of humidity, which will prevent human sweat from evaporating smoothly.

However, in this era, such an environment and high temperature are not unbearable for ordinary people, or the time they can withstand is greatly extended, not to mention these Crescent Moon Warriors who have far surpassed ordinary people.

Except for the slight heat, they didn't feel any discomfort, not even the idea of unbuttoning their regular combat uniforms, and now they were shocked by this new civilization, even though it was just a so-called military camp.

Tang Ling was equally shocked.

He found that it was wrong to define this civilization as a 'cave civilization', and if he really wanted to define it accurately, it should be 'geothermal civilization'.

What is the whole R-zone? It is a huge cave, but in this cave, in addition to an underground river, there is also a lava cave with a diameter of no more than 10 meters, constantly bubbling with boiling magma, like a crater.

The hole was not bare, but covered by a translucent shroud made of impure diamond.

And this cover has extremely complex lines, just like the lines on the gene chain meter, but compared to that, it may be much rougher, after all, the lines on the gene chain meter are so fine that you look like an ordinary line, but there are countless lines in the line.

But even so, Tang Ling observed with precise instinct, and found that its fineness was no less than that of the most advanced human chips, but the circuit composition was a completely different structure, with red fine stones inlaid at key points, just like human high-end mechanical watches used artificial rubies as mechanical bearings.

But whether these finely broken rubies were bearings or not, Tang Ling didn't know at all.

It is only known that this diamond cover is used to move a beautiful abstract work of art is also fully qualified.

But no one could take it away, because it was apparently a large instrument, and on it was a solid pipe, about twenty centimeters in diameter, but three meters long.

The three-meter solid pipe is polished very brightly and neatly, and multiple flutes are carved out from different angles, just like a human carved diamond.

I don't know how this hood gathers heat energy from magma, making the entire solid pipe red, like a pillar of fire.

The pillar of fire is connected to a diamond cover at one end and a machine suspended from a height of three meters at the other.

The whole body of this machine is also covered by diamonds, but you can vaguely see the various parts inside, like gears, and the bearings are constantly running.

On top of this machine, there are countless pipes connected to it, which are firmly fixed to the roof of the cave, and then each spreads out into countless branches, leading to various small holes in the wall of the cave.

These small caves are obviously the caves inhabited by the underground races, and even if you stand in the center of the hall, you can feel that these small caves have circulating air and wind, as well as a constant temperature, and... There are some hideous prosthetic bodies hanging from the small hole, directly connected to a pipe, flickering in the light and out.

So? These pipes act as 'air conditioners', keeping the temperature here at 62 degrees that the Underground race loves? At least after Tang Ling entered the R area, he found that the temperature here was almost constant.

Do these pipes also have the function of a 'fresh air system' that exchanges air and circulates it?

The biggest role of these pipes is to charge the prosthesis?

Tang Ling couldn't guess anything specifically, after all, he was not a technologist, but in general, Tang Ling knew where the energy support of the underground civilization came from, from these magma! Or all kinds of geothermal.

There is no doubt that as long as there is sustainable use of energy, a civilization has a basis for development.

Even Tang Ling was a little sour, after all, their energy seemed to be more environmentally friendly and more ....

Even they took advantage of their race to mine a large number of diamonds... The previous civilization had speculated that the diamond energy of the planet was actually very rich, but the technology of the previous civilization could not mine these diamonds buried deep in the ground.

So, in terms of diamond's hardness, it's really timeless, but what is the value? It is estimated that it will not be able to last forever.

All in all, it is such a power device that uses geothermal heat that has refreshed Tang Ling's understanding of the underground race, but this point does not represent the whole of the underground race.

Because there's a very strange sense of contradiction here.

There is clearly such advanced geothermal technology, but there are also fires everywhere, and all kinds of gnawed bones are piled up around the fires, including human bones.

This is a very angry thing, it is not the same race, the underground race will not have any psychological burden of cannibalism, but it is absolutely impossible for human beings to accept this fact when they see it.

Such a primitive and rude way, coupled with the pottery, bone tools, and even stone tools that were excavated in ancient civilizations and even rougher than ancient civilizations, made people suddenly feel that they had seen a primitive society.

What kind of collision is this? Tang Ling's gaze couldn't help but fall on the small caves that seemed to be a little dense on the walls of this huge cave.

These caves are not as rough as they think, they have different shapes, although the lines are strange but very rich, each cave wants to be an abstract sculpture, in which you can find a little shadow of human civilization.

For example, when Tang Ling saw one of the caves, he was full of the atmosphere of ancient China, trying to express the ancient style of tiles, bricks and stones, and the quiet and elegant feeling surrounded by green bamboo.

Although the learning is not in place, the combination seems a bit nondescript.

Is this the 'spiritual world' of the Underworld? All of them are carving and punching masters, maybe life without sunlight is too depressing, forcing them to look like this? After all, there is also playing with mud and stones underground.

Tang Ling didn't have any sympathy in his heart, why should he sympathize with these cannibalistic guys? Not even interested in merging them with civilization!

The only thing left is to maintain the right amount of humility and respect for a new civilization.

Standing here for only two minutes, Tang Ling had obtained this information, and finally had a shallow understanding of the underground race.

But the mission here is to fight.

Andrew also coughed appropriately, and then said, "Standing here and satisfying your curiosity is already the most unsuccessful thing I have done as a conductor. It's been two minutes, and thankfully there hasn't been any fighting. ”

"Now, let's disperse and start the mission according to the previous arrangement."

**

The area where the Raptors are located is at a crossroads of the second and third strategic arteries.

It covers a radius of about a mile, close to the underground river, because the shape of the large cave in the entire R area is not only irregular, but also very distorted, so the north and south sides of this place are covered by a rock wall extending out, like a small semi-enclosed area.

Other than that, there's nothing special here.

After the Raptors team came here, they began to rest in place, after all, it seems to be quiet now, but battles can happen at any time, so keeping their physical strength in the best condition is something that a qualified fighter can never forget at any time.

But Tang Ling did not choose to rest at this time, but walked around this one-mile radius.

He was observing everything here, and gradually frowned.

These two rock walls look very safe, except for the fact that it is a bit troublesome to get around the rock walls when they receive a signal for support.

But what's the trouble? Each of them is less than 100 meters long, isn't it a matter of seconds to follow the speed of the Crescent Warrior?

But is that the case? Not!

After all, there is a huge cave wall on one side and a rock wall on both sides, forming a concave character, and in battle, if an enemy breaks through from the rear, the dragon team will undoubtedly fall into the situation of being 'dumplings'.

Don't count on support, one can never crave outside help.

But is this a conspiracy? Apparently not! Such a simple conspiracy is easy to break.

Tang Ling tried not to think nonsense, but after careful observation, he circled four points on the two rock walls, and then said to the rest of the Raptors team: "Come here, chisel through these four places." ”

"Don't exceed two meters in height and 1.5 meters in width."

"Why, it's a waste of energy." Auston didn't have the consciousness to start fighting at all, and was lazily half-lying on the ground, perhaps because it was too quiet here, and there was no sound of the battle of the Purple Moon Warriors in the strategic route, which made people can't help but relax their vigilance.

After all, the Purple Moon Warrior stood in the way, giving people a full sense of security.

"Don't do it, chisel through it." Tang Ling didn't have an explanation, the growing anxiety had risen to the level of torture, he directly pulled out the C-grade alloy long knife and began to cut these rocks quickly.

Fortunately, it is not a diamond, otherwise with the hardness of diamond, even with Tang Ling's strength with a C-grade alloy long knife, it will take a lot of effort.

And Tang Ling's direct action made the members of the Raptors squad who had always trusted Tang Ling also start to take action, although there were still doubts in their hearts, but the tacit understanding, trust and affection between each other had not been cultivated overnight, so Tang Ling was unwilling to explain, so everyone didn't ask.

The sound of sharp weapons cutting and digging rocks began to resound in this small area, and the surrounding teams did not know what was going on here due to the light source and distance?

can only suppress their doubts, and each of them is more careful to guard, after all, they must not leave their respective towns without permission.

Quiet, depressed quiet, accompanied by rising anxiety, made Tang Ling dig the rock wall faster and faster, and between the splashes of rubble, Tang Ling always felt that there was an obvious loophole in this performance battle, which made people smell the smell of conspiracy.

What is this vulnerability? Tang Ling frowned and thought carefully, and he was responsible for digging one point alone, and the speed was faster than the other three points, and the two of them cooperated in the excavation.

With a 'boom', Tang Ling kicked open the last thin layer of rock walls, and with this sound, a faint sound of killing finally came from the third strategic artery.

The sound was not loud at first, but in less than a minute, it had gradually become so clear that the entire cave could hear it clearly.

And this point is clear like a signal, and the sound of killing is heard at the same time as the first strategic road and the second strategic road.

In just an instant, it went from vague to boiling and bursting, accompanied by a faint shaking, you can imagine a contact battle, from the beginning of the collision, without any excess, it directly entered the white heat.

Auston's palms began to sweat slightly, what the hell was this damn rock cave wall, it wasn't hard and unbearable, but it was still annoying, and it took a lot of physical strength to cut the next rock every time it was smashed.

Therefore, when the sound of the battle began to be clear, when the three strategic points broke out, Auston couldn't help but ask, "Tang Ling, do you want to continue?" We could be in combat at any moment. ”

Tang Ling didn't answer, he had already dug a hole that met the requirements by himself, he rushed directly to Auston's side, and began to quickly help the duo of Auston and Christina dig the rock wall.

"Tang Ling is right, let's hurry up." Yu suddenly shouted at this time, the Yufeng family is famous on the battlefield, and the training Yu has received since childhood is not just personal force, but also about the strategy and tactics on the battlefield, he sees the problem.

"Yes, hurry up." Tang Ling's speed was so fast that he couldn't care about any hiding at this time, almost venting and slashing at the rock wall.

"Are you a monster?" Although Auston was still puzzled, this sudden nervousness infected him, so that he did not dare to have half a reservation.

Tang Ling's sweat began to cover his forehead, not because he felt tired, but because the anxiety in his heart seemed to have risen sharply at this time.

"Kill!" A clear word 'kill' came from the third strategic route, because this is the junction point close to the first and third routes, so this word is like shouting in the ear.

Tang Ling's hand shook, and he already felt a strong sense of something wrong in his heart, but he hadn't grasped the point yet!

Time, give me two seconds.

Think, I need to think.

Tang Ling plunged the long knife into the rock wall, stopped moving, and began to try to calm himself down.

Key point, key point!

Tang Ling raised his eyes and looked around, and his ears began to be filled with the sounds of various fights.... What are the key points? Lava caves on the ground? The shocking geothermal installation? A small uninhabited cave? There are no more than forty bodies hanging outside the small cave, and they are still flickering and disappearing, like recharged prosthetics?

Or the message from these fights!

One second.... Beads of sweat rolled down Tang Ling's forehead, two seconds, Tang Ling clenched his fists, three seconds, four seconds... Auston roared wildly, and with Tang Ling's help, he successfully opened the second entrance.

With a 'clang', Tang Ling's long knife that had been inserted into the cave wall before fell to the ground, and Auston turned his head to look at Tang Ling, his lips opening and closing, obviously questioning Tang Ling's current state.

It was at this moment that Tang Ling raised his head suddenly, and he didn't even care about picking up the long knife, and under Auston's extremely shocked gaze, he shook his wrist suddenly, took out the wolf bite, and the whole person jumped upward, and at the same time stretched out his arm and nailed the wolf bite deep into the cave wall, using this as a fulcrum, the whole person quickly climbed up.

"What is this for?" Auston didn't understand why Tang Ling's mind was so jumpy.

At the same time, more than a dozen shouts of killing resounded in the first and third arteries, followed by the sound of fierce swords colliding, accompanied by the sound of hot weapons.

"Go and help dig the hole." Tang Ling didn't have any explanation at this time, just quickly crawled towards the top of the cave wall, and as soon as this sentence fell, he had already climbed almost fifteen meters high, almost close to the height of the rock wall.

Such heights are not enough! Is there no conspiracy? It turns out that this conspiracy is so hidden! And if it's really against me? What am I going to do now? What kind of choice to make?

Tang Ling's mind was churning with all kinds of thoughts, there was no better way, everything he had to do now was to remedy it.

But even if they are immortals, in the absence of information, they can't outline the conspiracy hidden in the shadows.

Tang Ling's heart began to ache, he knew that goodbye might be in the next moment, and he didn't even have time to say goodbye.

At this time, he had climbed to a height of about twenty meters, he grabbed a slightly protruding rock, and began to use a wolf bite to quickly cut a small rock pillar with a diameter of three centimeters, similar to the shape of a hook, and hung the smart lock of the tactical movement disk here.

And then I didn't have time to catch my breath, and quickly cut out the second and third hooks like this ....

"Throw me your tactical movement disk!" Tang Ling hung on the rock wall and shouted loudly.

On the wall of a large cave that was not noticed, a prosthetic body suddenly stopped flickering....