Ye Fei put a green mark on this hole filled with water to represent safety, indicating that this place has been seen, so as not to allow others to enter it repeatedly, and on the three-dimensional map, dozens of similar marks have appeared, which means that the soldiers have already viewed all these dozens of holes.

The communication between the commandos is not a simple point-to-point wireless communication, but a small information network covering the entire team based on the data system on the combat armor as a platform.

Each armor in this network is a data node, and soldiers can use this network to achieve visual and non-visual communication, transmit various information in real time, and achieve all-round seamless information docking.

Communication is just a basic function in a network.

As early as the earth era, various military powers of mankind have already realized top-down information-based command, and the existing system is just a strengthened version that has undergone countless improvements.

However, the information transmission speed of the resonance communication device is limited, and so far, the various fleets of the expeditionary force have not been able to achieve all-round information sharing with the headquarters of the space army, and can only ensure the communication between the fleet and the headquarters of the space army.

In fact, to achieve all-round information sharing, it is only necessary to install a few more resonance communication devices on warships, but at present, only the Chinese side has the technical strength to produce resonance communication devices, but it will meet the needs of the military market, and a small amount of surplus equipment is barely sold to the US and Russian military at high prices, and there is no surplus equipment to engage in information networks.

Taking 10,000 steps back, he said: The purpose of information sharing is to enable command departments to grasp the specific situation of combat units in a timely and effective manner. It is convenient for the command department to make a quick and accurate judgment on the battle situation.

On the battlefield of the Earth Age, the militaries of various countries may be able to rely on comprehensive information coverage to achieve rapid response and timely support for troops in battle. This is also the reason why the armed forces of the earth age have given top priority to information confrontation.

However, expanding to the vast scope of the solar system, even if the command department grasped the changes in the battle situation in time, there was no faster-than-light warship in its hands, and it could only stare dryly.

For example, if the Proxima Centauri fleet were to be devastated by a powerful enemy, the Aquila would immediately rush to Proxima Centauri after receiving the news, but it would also take months for such a warship to reach the speed of light at 76 times.

A few months. Wait for reinforcements to arrive on the ground. The daylilies have been frozen into ice, what is the point of sharing information without sharing?

Therefore, the military has not planned to comprehensively informatize the expeditionary force, and of course, a small-scale information network within each fleet of the expeditionary force has always existed. It's just this kind of information network built using radio waves. The propagation efficiency of information depends on the speed at which the radio waves propagate. In a cosmic war, which is often calculated in astronomical units, if the distance between the two warships is too far, the information network will lose its due role.

Similar to this is the optical system. A battle outside of an astronomical unit takes more than eight minutes to be captured by the optical system, and in the face of an unreasonable warship like the Aquila, more than eight minutes is enough time to determine the outcome of a battle.

Therefore, the fleet is accustomed to using resonance communication, a more time-sensitive means, in battle, and there is no information network at all, and only when the fleet gathers together, the various ships will frequently use the information network to communicate.

Not only the fleet, but even the J-447 fighters of the air force have the ability to fly at the speed of light in short ranges, and the original wireless communication equipment has become a tasteless chicken rib, and the military does not have the ability to equip all fighters with resonance communication equipment in a short period of time, and at present, only one fighter of each brigade of the air force is equipped with resonance communication equipment. It is also for this reason that orders from the aviation forces when performing tasks will be communicated only to the brigade level.

The number of fighters to be dispatched will be determined according to the difficulty of the mission, and it may be dispatched by the whole army, or it may only send one fighter with resonance communication capabilities.

However, in a small-scale elite marine unit such as a commando, the convenience and speed of the information network are still irreplaceable -- at present, the volume of the latest generation of resonance communication equipment is about 1.5 cubic meters, and there is no problem in installing it on the J-447 with a length of 64 meters, but the external weapon module on the combat armor belt is less than three meters high, and it is impossible to carry such cumbersome and expensive communication equipment.

Ye Fei's gaze skimmed over the holes that had been marked, and he was thinking about which one to choose better, when the black bear's deep voice suddenly let out a creepy sneer: "Hehe, this is a hatchery, throw a nuclear bomb when we withdraw." A blank void was marked with a sign of translucent ionizing radiation with a sense of nothingness.

If the sign changes from virtual to real, it means that someone has planted a timed nuclear bomb there, or someone has fired a nuclear bomb that is about to explode there.

"You're really idle." The veterinarian marked a hole with a skull mark indicating danger.

The black bear asked curiously, "What is that place?" Dangerous? ”

"It should be a military camp or a residential area or something like the Outer Bone Man, anyway, there are too many Outer Bone People in it to count." The veterinarian found a new hole, and while zooming in on the image, he pinched the tooth flower, "This game is really like playing a three-dimensional game, and it would be more realistic if the outer bone man could move." ”

Ye Fei laughed dumbly when he heard this: "You really dare to think about it, if you develop one, it will definitely be popular." ”

After getting the consent of the military, the No. 1 laboratory cooperated with a civilian game company to produce a first-person shooter game game called the blue-spotted bone mound, which was widely praised after the game was launched, and was known as the most well-made and realistic exoskeleton shooting game, and became a compulsory course for commandos as a classic example of attacking the underground fortress, and became one of the intensive training subjects for commandos.

Ye Fei deliberately chose a hollow with a larger space, and was suddenly startled after his eyes entered the inside of the hollow.

The place was covered with wisps of gray-white vines, and a huge hard-shelled giant insect stood among the dense vines with its long, thin legs. There is also a kudzu vine at the tip of each of the two front legs.

An exoskeleton sits on the head of a giant worm, seemingly directing the giant worm, and although the picture is completely still, the caution of the giant worm can still be seen.

Ye Fei's barren knowledge told him that it was absolutely impossible for a plant to grow so luxuriantly in a poorly lit underground, unless it was the roots of some kind of plant, but the gray vine was more likely to be a fungus, something similar to a mushroom.

"Veterinarian, do you have any impressions here?" Ye Fei shared the images he saw.

The veterinarian only looked at it and said with certainty: "No...... How do I think this big bug is like a harvester? ”

Ye Fei's eyes lit up: "I feel this way too." Could this vine be the food of the outer bone hybrids? ”

"So said. This is the farm of the outer bone hybrids? "Come and see this place, it's a bit like a hatchery, but it's different." ”

The black bear pointed out the hole he was looking at to Ye Fei and the veterinarian. Ye Fei marked the farm with a yellow exclamation mark representing a mild threat, and then turned to the space of the black bear's finger.

There are palm-sized blocks of stone piled up here and there. The surface of these blocks is mirror-smooth. Except for a slight difference in size, the shape is basically identical.

"Look, what do you say these things do? Exobone hybrids should be free of industry. What the hell is it going to take so much effort to grind so many stones into squares? The black bear asked, confused.

Ye Fei couldn't figure out what the hell the Outer Bone Man was doing, he could only say that the human race still knew too little about the Outer Bone Man.

The veterinarian grinned as soon as he saw these square stones, and after listening to the black bear's words, he laughed even more.

The black bear had an idea: "Veterinarian, have you ever seen this thing?" ”

The veterinarian nodded again and again, and finally managed to control his laughter: "This thing is the feces of the outer skeleton, there is no need to make it at all, just pull it out." ”

"My day!" The black bear gritted his teeth for a while, "You can't blame me for this, who knew that the pulled by the skeleton people outside the road was so individual?" Frustrated. ”

He couldn't have imagined that what he found was actually the dung pit of the Outer Skeleton Man, and it was still such a big one.

No wonder there was only one passage leading to this cavity, and the cavities next to it were far away...... How can the manure pit not be far away?

The veterinarian withdrew his gaze from the manure pit and said with a smile: "In order to adapt to the environment in the universe, the digestive system of the outer bone hybrid is completely different from that of humans. Their digestion ability is extremely strong, the remaining residue is very small, the residue in the most water will be absorbed, only dry feces are left in the stomach slowly accumulated, when to save a large piece and when to pull out, generally about two months to pull back, and in order to save the local area also strive to compress the volume of the residue. In fact, the outer bone hybrids are not multiple, there is an animal called wombats on our earth, and the feces pulled out are also square, but they are not so smooth. ”

Obviously, this type of excretion minimizes the number of excretions.

"Okay, okay, you're disgusting or not, Sensei said." The black bear stared at the bull's eye, looking like he would beat you up if he dared to say anything.

The veterinarian wanted to say that the chrysanthemum of the outer skeleton man has two layers, the inner and the outside, and can be excreted in a vacuum environment without exposing the fragile tissues in the body, but after being threatened by the black bear, he had to swallow the words that came to his mouth back into his stomach.

Ye Fei didn't feel disgusted, but he didn't dwell on this issue either, and casually chose an empty hole as the next target.

I have to say that the bone mound is too big, there are countless large and small cavities distributed within a range of hundreds of kilometers, most of the cavities can't see the specific function, and only a few of them can even guess to come up with a rough idea.

The outer cavern was still invisible, and as the exploration deepened, more and more strange caves appeared in front of everyone's eyes.

When Ye Fei was inspecting a hollow hole about 400 kilometers deep into the bone mound, he saw crystal bushes all over the cave, as long as there was a trace of light, the crystal would refract an inexplicably beautiful light, giving people an indescribable sense of psychedelia.

However, the phantom body of the Outer Bone Man jumping up and down like hundreds of monkeys in the crystal bush completely destroyed the magnificent scenery, and it was simply a terrible scenery - no matter where there were more creatures like the Outer Bone Man, it would make Ye Fei have the urge to destroy everything.

There are more and more colored markings on the map, and the location of the exploration is about to enter the inner layer of the bone mound. However, there was still no trace of the captured personnel.

Ye Fei's originally calm mood began to slowly become agitated.

Could it be that the captives are in those unscouted hollows? I don't know if the other teams in the road have found the spider robot, or if they have found the location of the captive.

The most obvious feature of the middle layer of the blue spotted bone mound is that it is full of large cavities, the dividing line between the middle layer and the inner layer is about 400 kilometers underground, and there are no large cavities below, because the depth is too large, the nuclear detonation wave becomes almost non-existent after reaching the inner layer, and before encountering the spider robot, the inner layer only has a vague outline.

The black bear suddenly exclaimed, "Boss, you'd better take a look at this." ”

"What?" Ye Fei turned to the position of the black bear mark, and suddenly saw a scene that he couldn't have imagined.

It's a small rock cavern. Countless hollows were dug into the hollow stone walls, more than half a person high. In each hole was a neatly arranged set of bone armor.

It's so weird, how can the Outer Bone Man collect his own people's bone armor?

Ye Fei felt that his brain was a little insufficient: "Could it be that this place is the cemetery of the outer bone mongrel?" ”

"Outer bone mongrels and graveyards?" The veterinarian pouted disdainfully, "I've only seen the Outer Bone Man eat their dead companions, I haven't seen them bury their bodies." ”

"And how do you explain the origin of these bone armors?" Ye Fei also felt that his guess was not very reliable. But he couldn't think of a more plausible explanation than that.

The veterinarian sighed, "Boss." I can guarantee it. You've added a key research topic to Lab One. ”

"Boss, you should take a look here." This time the black bear didn't interject, but instead pointed to a point on the diagram.

Ye Fei and the veterinarian immediately turned their gaze to the direction of the black bear's finger. There was a blurry white humanoid object there.

The light under the bone mound comes from an organic substance on the side wall of the passage, so the light in the cave is dim, and it may not have much effect on the outer skeleton people with excellent vision, but for humans, it is almost no different from the night, and if it were not for the optical system on the armor to compensate for the photometry, no one would want to move freely inside the bone mound.

The Spider Robot's reconnaissance system is also affected by the lack of light, not all models are clear, and many places are a little blurry, and this white shadow is one of them.

"What is this?" Although it was a little vague, it could be seen that it was not human, and Ye Fei felt very familiar, as if he had seen this thing somewhere.

"It's the Outer Skeleton!" The veterinarian immediately recognized the shadow's appearance, "The outer bone man who has stripped off the bone armor!" ”

This sentence suddenly reminded Ye Fei: "Yes, I remember, during the Battle of Mars, we saw this thing underground...... His words became slower and slower, and he became more and more hesitant.

"Veterinarian, how confused am I, I've always remembered what happened, but didn't the outer bone mongrels take off their bone armor to digest the captives? How can the bone armor of an exoskeleton hybrid still come off? Didn't it grow from the body? ”

"I don't know what's going on, there have been two similar incidents in the laboratory, the outer bone man who was studied didn't know how to take off the bone armor, and the autopsy found that the epidermis of the outer bone man after taking off the bone armor is actually hard, and no one knows what is going on until now." The veterinarian told him everything he knew.

"Could it be...... Could it be that the bone armor is the clothes of the outer bone man, and it can be taken off if you say you can take it off? Ye Fei couldn't believe his reasoning, and his mind became a mess.

"How can it be clothes, it should be similar to the armor on our bodies." The black bear urn said angrily.

"Armor?" These two words were injected into Ye Fei's heart like an initiation, "It makes sense, we always thought that the Outer Bone People entered the universe directly, and no one thought that their bone armor might be the same as our armor!" ”

"That's not right, there are muscles under the bone armor when dissected." The veterinarian said confusedly.

"There's nothing that can't be explained, aren't the exoskeleton mongrels just as incomprehensible to our armor? Maybe they have the ability to fuse with bone armor. Ye Fei's mind became clearer and clearer.

The veterinarian shook his head again and again: "Impossible, the hatchlings of the outer bone hybrid are born with a shell, how can it be worn?" ”

In terms of understanding of the outer skeleton man, Ye Fei and the black bear are not as good as the veterinarian.

"Well, I'll say a few words." The black bear spoke cautiously, "You say, will the outer bone man be like a crab and shed its shell?" ”

The veterinarian shook his head and said nothing, but his opposition was unmistakable.

"Forget it, let's study these useless things for what, it's better for the outer bone mongrels to take off that layer of shell, and they will die suddenly with one shot." Ye Fei decided to stop arguing unconsciously, "It's important to find someone. ”

In fact, the three of them never stopped checking, but they never found anything, and after entering the inner layer, they could hardly see the shadow of the ordinary outer skeleton man, nor could they see the outer skeleton man who had taken off the bone armor. On the contrary, there are white bone figures everywhere, and occasionally you can see a half of a red or dark blue outer bone man that has never been seen before, which provokes everyone to be amazed.

The location he checked gradually approached the hollow in the center of the bone mound, and Ye Fei felt that he would definitely find nothing this time, and he couldn't help but be a little depressed.

Prisoners don't end up in a hollow in the center of the mound, do they?

The hollow in the center of the bone mound has been all reconnoitred by the spider robot, but the structure of the central cavern is very complicated, and the giant cavity with a diameter of 100 kilometers is full of layers of composite structures, as intricate as a maze, and the part that is really mastered through reconnaissance is less than one-third of the total space, and if the captured people are really locked there, it will be a big trouble. (To be continued......)

PS: I have applied to withdraw from the Compensation and Attendance Plan, but it has been showing that it is under approval.