The Black Bear, located directly below the hole, was the first to be dragged away, and the warriors quickly and orderly exited the communication room and retreated into the corridor.

"Black bear!"

"Here!"

"I don't care what method you use, keep the exoskeleton mongrel in the communication room for me, and I can't get out of a single step!" Ye Fei gave the latest order to the black bear with unprecedented determination.

"Yes!" Angry, anxious, this is what the black bear heard from Ye Fei's tone.

He didn't dare to say that he was the person who knew Ye Fei the most in the whole group, but he was definitely one of the people who knew Master Ye the most.

It is impossible for Ye Fei not to understand the monotonous offensive tactics of the Outer Bone Man, the space in the base is narrow, which is conducive to the concentration of firepower by the commandos, but no matter what happens, there are two sides, the narrow space is more beneficial to the Outer Bone Man, they can completely use the crowd tactics to fill the base!

In this case, the hard top is by no means a good way, Ye Fei just gave the order to defend at this time, and ninety percent of it was a new situation ahead.

All thoughts flashed through the black bear's mind, and he immediately arranged for the warriors to retreat, giving way to the section of the corridor occupied by the walls of the communication room and descending to stop the defense line from the two sides from falling into a scuffle after the outer skeleton crushed the walls of the communication room.

It's true that a commando can take a group of Exoskeletons, but only if they have enough ammunition and a sufficient distance.

If the two sides are mixed, the assault team will not be able to give full play to the advantage of firepower and rely on hand-to-hand combat? Not to mention the pitiful strength on the Yangtze River, even if the entire assault team is pulled out, it is not enough for a fraction of the external skeleton.

What the black bear has to do is to retreat in small increments and resist. Buy enough time for Ye Fei.

As soon as the first team to evacuate had established a blocking position at the end of the corridor, a large number of Exoskeletons poured out of the communication room, and the soldiers behind the temple turned to shoot, flying towards the end of the corridor with the help of the recoil of their guns.

At this time, the long-term tacit training showed undesirable results, and several warriors grabbed the backs of their companions in the back and dragged them quickly to the safety at the end of the corridor.

"Call me!" The flying bullets suddenly turned half of the corridor into a hornet's nest, and the hundreds of exoskeletons that had already burrowed into the corridor died without pulling their bodies.

The black bear quietly breathed a sigh of relief, it seems that the narrow space of the base also restricts the troop transportation of the Outer Bone Man, judging by the current situation. It's absolutely no problem to top up here for a few hours.

Just as the black bear guessed. Ye Fei was indeed in trouble.

The advance of the second brigade was originally quite smooth, but it didn't go far before they encountered a small number of exoskeletons, and the soldiers were all merciless, killing one by one. It didn't take long for the area centered on the communication room to be cleared. Wait for the arrival of the follow-up troops.

After the monkey retreated to the ninth floor with the three major teams. Ye Fei immediately ordered the three teams to guard several intersections around the communication room, while Sabre led the soldiers of the second team to divide into several roads and rushed to the passage and elevator leading to the tenth floor to check the situation.

In order to prevent being pinched back and forth by the exoskeleton. The advancing warriors had to check every room on the way to make sure there were no Exoskeletons hiding inside.

As soon as the team members left Ye Fei's sight, the saber suddenly called on the radio: "No. 1, No. 1, I'm Sabre, you'd better come and take a look."

"What's wrong?" Ye Fei found that the saber stopped in the middle of another corridor not far in front, and immediately beckoned to the monkey, "Expand the scope of defense!" ”

"Yes!" The monkey was ordered to leave, and Ye Fei rushed to the position of the saber alone.

After arriving around the corner, Ye Fei saw the soldiers guarding the corridor at a glance, and everyone's eyes were all intentionally staring at a door in the middle of the corridor.

Ye Fei's radar showed that the saber was in that room, and he immediately flew in.

The sign in the room was engraved with the words "cafeteria", Ye Fei leaned on the door frame and floated in, and immediately gasped.

In the center of the huge cafeteria, the remains of more than three digits of soldiers were piled up in a small hill, among which were commandos in combat armor and more ordinary soldiers in white rigid pressure suits.

The blood stains on the dark battle armor were not obvious, but the white pressure suits of the martyrs were already stained with blood, and what made Ye Fei even more angry was that most of the bodies were completely mutilated.

"Wu Fei!" Ye Feiya gritted so hard that even the roots of his teeth were loosened.

"Commander." Saber clenched his fists in grief and indignation, "It's so miserable, let's, we have to avenge our brothers!" ”

Even though they are not comrades on the same ship, although they do not know any of them, they are brothers and comrades-in-arms when they wear the same military uniform.

There is still a fox sad when a rabbit dies, let alone a person?

"Needless to say, advance according to the original plan, give me grenades, use poison gas, the faster the better!" The anger in Ye Fei's heart was almost gushing out of his eyes.

The revenge can be avenged later, but even a little slower advance of the troops could result in the destruction of a surviving warrior at the hands of the Outer Skeleton.

"Yes!" The saber took the gun and walked out, "Follow me!" ”

"Boss!" The monkey who had just pushed the line to the vicinity arrived at this time and reached out to stop the saber, "Wait first." ”

"What are you waiting for!" The red-eyed saber pushed the monkey away.

The monkey hurriedly grabbed the saber: "You have to wait!" Chief! ”

"What's going on?" Ye Fei's brows tightened, he knew that the Dao Monkey would never do this for no reason, so he immediately made a pause gesture to the saber.

Only then did the monkey let go of the saber and said with a solemn expression: "Chief, I haven't had time to report to you, we have already used poison gas bombs just now, but they are useless at all, and the Outer Bone Man doesn't care at all." ”

"What? Are you sure? Ye Fei grabbed the monkey's shoulder.

He believed that the monkey would never talk nonsense at this time, but he was too surprised to believe it was true.

The monkey nodded heavily: "I'm sure, I don't know if it's the poison gas we brought that pops up the problem." "Poison gas is a genetic study of the outer bone man, involving a complex genetic structure, not a simple toxic chemical, stored for a long time, there is indeed a possibility of failure.

"Impossible!" Saber subconsciously retorted, "The validity period of the gas bomb is more than five years." This is just a little more time, how can there be such a serious quality problem with the equipment rationed by the headquarters for the expeditionary force? ”

"I hope not, but I personally ordered the use of gas bombs." The monkey didn't want to argue any longer, "Now is not the time to argue, if you don't believe me, throw two and try it." ”

"I ......" The saber suddenly ran out of words, he really wanted to give it a try, but he also knew that the monkey would never make up such an easy lie, "Maybe it's just the ones you used that have a problem." ”

"Stop fighting." Ye Fei turned on the radio. "Black bear. Try throwing two gas bombs. ”

"Roger." The black bear put down the machine gun, took two gas bombs himself, aimed them at the bulkhead and threw them hard, and the gas bombs hit the bulkhead. Unmistakably popped into the door of the communications room. Pale yellow smoke immediately filled the communication room. Gradually, they poured into the hallway.

The black bear clapped his hands: "Boss, this thing is close to blocking the line of sight, which is not good at all." ”

"What is the reaction of the outer bone hybrid?" Ye Fei was in no mood to tease the black bear.

The black bear stared in amazement at the Outer Skeleton who was still rushing into the hallway. His eyes widened dumbly: "This, this can't be!" "When I was on Mars, I used one accurately, I don't know how many exoskeleton people were poisoned by the Dao, why is it useless today?

Without the black bear answering, Ye Fei also understood the final answer, he looked at the saber and said: "Except for not using poison gas bombs, the rest will be executed according to the plan, quickly!" ”

"Yes!" The saber immediately ran out of the canteen with the fighters.

"Boss, there's one more thing." The monkey said again.

"What else?" Ye Fei chuckled in his heart for a moment, for fear that the monkey would say something earth-shattering.

"I've found out that until now, these Exoskeletons haven't used the Corrosion Ball!" The monkey said bewildered.

Although it hasn't been a long time since the beginning of contact, there have been a few short-range head-on clashes, and the space of the base is so small that it has always been within the range of the corrosive ball, how can the Outer Skeleton not use it?

Ye Fei was stunned for a moment, and subconsciously looked back at the remains of the martyrs piled up in the middle of the cafeteria.

Lacerations and penetrating wounds were easily distinguishable on the mutilated remains, but there were no signs of corrosion that were common in the past.

It is reasonable to say that there are no signs of corrosion on the remains of commandos, but it is a bit unreasonable to say that there are no signs of corrosion on the pressure suits of ordinary soldiers.

In order to deal with the corrosive ball of the outer skeleton, the surface of the combat armor of all commandos of the expeditionary force has been treated with anti-corrosion, even if it is directly hit by the corrosive ball, it will not produce the slightest corrosion.

But the commando team has combat armor that has been treated with anti-corrosion, but those ordinary crew members wear only pressure suits, although they have a certain protective ability, but the protection ability of hard pressure suits is more reflected in the anti-puncture ability, and there is basically no defense ability against the corroded ball.

"Monkey, what do you want to say?" An unreasonable thought suddenly popped up in Ye Fei's heart.

The monkey hesitated and said, "I'm wondering if this exoskeleton is a little different from invading the solar system!" ”

The monkey is still a captain, and the level of documents that he can access is worse than Ye Fei's, but before the expeditionary force set off, the headquarters disclosed some information related to the Outer Bone Man to all the officers and soldiers of the Expeditionary Force, including the situation of the corroded ball and the social structure of the Outer Bone Man.

According to the information provided by the mechanical civilization, the Outer Bone Men who flew from the Immortal Arm to the Orion Arm are a large group of Outer Bone Greats, but any one community has the power to act alone.

From a human point of view, the invading Outer Bone People are actually a loose alliance, and the Outer Bone People are the strongest of all the Outer Bone People, and the other Outer Bone People seem to belong to the larger race, but in fact they are independent of the outside.

These different races usually use different planetary systems as springboards, constantly flying to farther and deeper universes, but they also have cooperative relations with each other, such as the pioneer community discovered the earth and sent the news back, but the pioneer community was defeated by humans and almost wiped out.

A living planet is no less than a treasure buried in endless wealth to the Outer Skeleton. And first discovered that the pioneer community of the earth is gone, such a big piece of fat, which community is not greedy?

In order to compete for the Earth, the Sirius community and the Wolf community chose to target the solar system at the same time, which is theoretically completely passed, otherwise the possibility of these two communities flying to Proxima Centauri at the same time is extremely low.

The distance between the two communities is measured in light years, and I am afraid that they have not been in contact with each other for many years. Moreover, the Outer Bone People are a biotechnology-based civilization, from the vanguard tribe has a corrosive ball, but the Sky Wolf tribe does not, it can be inferred that the two communities not only have a slight difference in evolutionary direction, I am afraid that they look similar in appearance, but in fact there are certain differences in genes.

"Come with me." Ye Fei was stunned and said, "The fighting methods of the Sky Wolf Group and the Pioneer Group are different, if we guess correctly, the Sky Wolf Group probably doesn't have a weapon like a corrosive ball at all." ”

He had been in contact with the mongrels representing the Outer Bone Pioneer colony for a long time, and had accidentally learned about it during their usual chats. The Corrosive Ball is not an ability evolved by the Exoskeleton itself. It's a parasitic creature attached to the outer skeleton!

Sounds like a human firearm.

That makes sense.

The monkey confirmed his thoughts from Ye Fei, but he didn't feel happy at all: "They are all outer bone people, why are they so bad?" ”

"I think it's pretty much the same, at least it looks exactly the same on the outside." Ye Fei said. "It's about the same as the difference between the different races on the planet. Caucasian and yellow people are significantly different in terms of skin, hair color, and other aspects. But can it be said that Aryans and Asians are two different species? ”

Regardless of the apparent differences, the fact that different races of people can have offspring after intermarriage shows that different races on Earth are actually the same species.

Not only modern races. Through archaeological discoveries, Neanderthals who disappeared in the long river of history are not fundamentally different from modern humans, and they also belong to a member of the human family.

The monkey nodded: "The different communities of the Outer Bone People, just like the different ethnic groups of humans, not only are there differences in genes, but also the direction of the development of techniques is also different, so the Celestial Wolf Community does not corrode the ball." He suddenly thought of the appearance of the outer skeleton people of the sky wolf colony climbing on all fours, and it was not a day or two since he had dealt with the outer skeleton people, but he had never seen the outer skeleton people move in a low-gravity environment in this way.

"Don't blame the gas bomb for not working." Ye Fei said bitterly, "Okay, it's useless to study, hurry up and hurry up with your go." ”

"Yes!" The monkey left immediately.

Ye Fei muttered to himself, "I hope both of our guesses are right." The two of them didn't actually say a few words, and they didn't waste much time, but they both understood what the other meant.

Speculation is speculation after all, and sufficient evidence is needed to prove it, but Ye Fei is not engaged in research, he doesn't need to understand the difference between the outer bone and the artificial, he just needs to understand what kind of impact the difference between the enemy will bring to the expeditionary force.

"One-one-one, please answer when you hear it."

"Please!" It's a saber communication.

"No. 1, No. 1 Squadron has advanced to the vicinity of the elevator, there are many Outer Skeletons here, and there has been an exchange of fire at the moment, and the enemy is being cleared." The saber contacted Ye Fei while firing.

If it weren't for the fact that there were too many exoskeletons near the elevator, the saber would have sent a drone to reconnoiter the situation in the elevator shaft, so why would it be so troublesome to clean up the enemy first?

"Stay safe!" Ye Fei habitually instructed.

While speaking, Saber received a communication from the second squadron, and after listening carefully, he contacted Ye Fei again: "No. 1, No. 1, No. 2 Squadron reports that there is no passage to the tenth floor on the left side of the ninth floor. ”

"None? The second squadron will be withdrawn at once to support you directly. Ye Fei adjusted the arrangement, "How is the situation in the third squadron?" ”

Saber first contacted the 3rd Squadron and asked about the situation before replying: "The passage was found on the right side, but the passage has been closed. ”

"Okay, the third squadron is also withdrawn, you give me the fastest speed to take the elevator shaft." After speaking, Ye Fei left the cafeteria, "Monkey, leave a few people to find a way to seal the door of the canteen, and the others are ready to respond to the retreat of a large group." ”

The team had to determine the location and number of survivors, it was impossible to bring the remains of so many martyrs, and in order to prevent the remains from being destroyed again by the Outer Skeletons, the door had to be sealed first.

"Understood!" The monkey couldn't find any suitable materials for a while, so he simply removed the hatch on the side of the corridor and welded the canteen door directly with the alloy hatch.

Ye Fei nodded with satisfaction.

The outer skeleton man can even knock down the bulkhead, if he has to go in, no one can stop him, and adding a layer of cabin can only be said to be better than nothing.

Psychological comfort is also comfort, which is better than not covering up.

Ye Fei threw down the three teams of the monkeys, and hurried to the elevator alone, and when they arrived near the elevator, the second team of the saber was still fighting fiercely with the outer bone man.

"Haven't called yet?" Ye Fei's brows tightened.

If you don't open the way to find the survivors as soon as possible, if you keep going like this, maybe these little 200 people will be thrown here in a ghost place.

"Commander, it's not that we don't work hard, it's just that there are too many enemies." Saber said bitterly.

He didn't want to make a reason for himself, but the corpses of the exoskeletons attached to the elevator were almost blocking the corridor, and there was still a steady stream of exoskeletons coming out of the elevator shaft, could it be that the first batch of exoskeletons who invaded the base were all concentrated below the tenth floor?

"Where's the other elevator?"

"The third squadron has just seen that the elevator shaft is open, but the elevator door on any floor cannot be opened." Saber replied.

"No Exoskeleton?" Ye Fei's eyes lit up.

"Nope." Saber was stunned for a moment, not understanding what Ye Fei was happy about.

"Monkey!" Ye Fei shouted excitedly, "Immediately take your people into the No. 2 elevator shaft, call by radio, see if you can contact the people below, see which floor they are on, if you don't answer, find a way to open the elevator door on the sixteenth floor, start from the bottom floor and look up, until you find them." ”

"Black bear, prepare to retreat into the No. 2 elevator shaft, saber, blow up this passage for me, and block all the outer skeleton people in the No. 1 elevator shaft." Ye Fei clenched his fists and roared.

It is really a village with no way out, and the willows and flowers are bright. (To be continued......)

PS: Ask for all kinds of free tickets! Forget about the payment, the subscription is the best support, and if you spend more money, we really don't want to go.

In addition, let's talk about the questions raised by book friends, which really left me speechless. I really don't want to hit this book friend, but I can't help but complain - gunpowder contains oxidants, and its combustion really doesn't need external oxygen support!

The bullet casing is sealed, after the bullet is loaded into the chamber, it is also sealed, after the primer is fired, the gunpowder in the cartridge case burns under closed conditions, and the volume instantly expands thousands of times to push the warhead out of the chamber, and in the whole process, there is no need for oxygen support!

Please don't ask curious book friends to ask similar questions again, it's obviously very common sense, don't answer as if I ignore book friends, and the answer is deep and disrespectful to book friends, and it's shallow, and I can't bear to always have similar questions.

After all, I would like to state that the above content does not have any derogatory implications for the book friends who asked the question.