"Prepare for battle!"

At the same time that the words fell, the five of them cooperated and dispersed to the surrounding bunkers.

Lao Bai rushed into the building on the side of the street, kicked open the half-hidden door, put the rectangular box containing fuel rods in a safe place, and then loaded the sickle assault rifle in his hand and quickly approached the window.

The action is done in one go.

"Arrive at the location!"

“+1”

"I'm all right too!"

Coordination like this they had done countless times, and according to the green dots on the VM map, the five-person team spread evenly around the building, controlling all possible directions approaching.

There are almost no dead spots!

The crews of the Ox Horse squad nervously awaited the start of the battle.

However, after a long time, the streets were still silent.

Still not a sound.

Quit smoking, who was standing in the front row with Lao Bai, held his breath and carefully observed his surroundings.

However, apart from the vines gently swaying by the window and the leaves swaying in the breeze, there was no discernible movement in the entire street.

Is it a delusion?

As soon as such a thought was born in my heart, there was a whooshing sound overhead.

Before they could pronounce a word, something exploded above their heads.

Bang——!

Standing behind the half-collapsed concrete wall, Yashi was stunned.

"Damn?! Mortar! ”

In fact, mortars in street fighting are very inefficient, there are bunkers everywhere, and the range of fragmentation is minimal.

However, the other side did not seem to realize this, and fired three more shells at them.

Without exception, these shells exploded in the air, and they were all twenty meters away from them!

"And it's an airburst bomb...... Tempest frowned, glancing at the signal on the VM screen, and then quickly glanced out the window, his eyes narrowing slightly.

Tiny fibers fall slowly from the air, like cilia on a dandelion.

That's the culprit of blocking the signal!

"It's a signal jamming bomb!"

The scolding of Night Ten was heard in the distance.

"Damn! I'll just say why the drone can't move! ”

The latest "Type 5" hussar exoskeleton sold in the NPC Store does not come with a tactical helmet with an eyepiece, but also includes a small, palm-sized, shoulder-mounted close-range reconnaissance drone that can share the field of view on your own or your teammates' helmet eyepieces.

And yet now.

UAVs lose their meaning.

Not only was Night Ten's drone useless, but the "Y-1 Firefly" quadcopter of Hurricane was also useless.

Lao Bai turned on the speaker of the helmet and shouted with his voice open.

"Night ten, look for the commanding heights, find out the observer and knock it out! Quit smoking and follow me, we find a way to get their mortars out! ”

The advantage of the language barrier is fully demonstrated at this moment, they can't understand the NPC's words, and the same NPC can't understand their communication.

"Roger!"

He was about to get up when he was about to quit smoking, when a thick tongue of fire suddenly erupted from the window directly across the street, and bullets rained down.

A cloud of debris exploded on the concrete slope, and he was so frightened that he quickly buried his head and hid behind the bunker, moving short in the chaotic gunfire.

Seeing that his teammates were suppressed by fire, Lao Bai immediately raised the rifle in his hand and fired at the window directly in front of him to cover the transfer of his teammates.

At the same time, a dense burst of gunfire was heard on the other side of the street.

There is a strong wind and a long direction!

Lao Bai's brows tightened.

The combat qualities of these people don't look like a ragtag team!

At least—

Much more trained than those marauders!

"Free fire!"

Shouting loudly, Bai shot the last shuttle in the magazine at the window across the street, replaced it with a new one, and began to move out of cover.

Mortars on the opposite side continued to fire, and soon the signal for the neighborhood was completely cut off from the outside world. Night Ten is moving higher, and the area above the twentieth floor should be able to restore communication with the Vault.

At the same time, Fang Chang and Tempest had already met the enemy.

The four-man team approached from their flank, slamming into their faces, sprays of gunfire flickering and moving through the narrow alleyway, and the entire street was covered in flying debris and debris.

There was no communication between the two sides.

A fierce exchange of fire broke out in silence.

Hit two shots in the chest, but fortunately it was blocked by the bulletproof plate, Fang Chang gritted his teeth and let go of the PU-9 submachine gun that had empty bullets, and held the dawn compound bow to stand up, and his pupils suddenly shrank slightly.

Bullet time!

The dust slowed down suddenly.

The whole world is slowing down along with it.

Including himself!

Locking onto the figure in the smoke, he pulled the bowstring as fast as he could, his fingers loose.

The bowstring shook at a frequency visible to the naked eye, and a three-edged arrow shot with full power sank into the smoke as fast as lightning.

In the meantime, bullet time lifts!

Whoosh –

The black shadow's chest and an arrow shot by Fang Chang collided squarely, and he fell to the ground with a muffled snort.

Seeing the pitch-black armor on the man's body, a hint of surprise flashed in Fang Chang's eyes.

Who the hell are these people?!

……

Reaching out and dragging his teammate back behind the cover, Dimmit, who was carrying an assault rifle in his hand, was also full of surprise.

It's not that I'm surprised by who these people are, but they have a clear goal and who they are. However, to his surprise, the equipment and combat awareness of these people completely exceeded their expectations.

Pre-war police exoskeletons!

Where did they get all this goodies!?

But whoever they are, don't try to slip away from here today!

"The left lung is pierced! Ravan is dying! The medic who was handling the wounded shouted.

"Hemostatic spray! Fast! Help him take care of his wounds first! ”

"This bunch of barbarians...... Actually using a bow and arrow?! As soon as one of the soldiers finished speaking, a shuttle of submachine gun bullets flew over his head, and he was so frightened that he hurriedly hid back.

"Don't underestimate them!" Dimmit exclaimed, "That man's bow is strange! ”

Helmet's assisted aiming?

Or an electronic eye?

This reaction speed is a bit outrageously fast!

Especially when this group of people actually saw through their ambush in advance, he didn't expect it.

Their exoskeleton can shield the heartbeat and 90% of the heat source, even the awakened of the intuition system can't find them from such a distance, right?!

Dimmitt ripped a frag grenade from his waist, but before he could pull the tab, there was a whoosh that exploded above his head almost at the same time as the explosion.

Hundreds of steel balls burst from the arrows, sweeping directly across a cylindrical surface, and they were caught off guard as they hid behind cover.

Thanks to the exoskeleton on their bodies, the flying shrapnel would have been enough to kill and injure most of them.

Dimmit didn't dare to take it lightly, and immediately clenched his fists, signaled to the two teammates who could still fight, and spread out the encirclement towards the ruins on both sides, bypassing the opponent's firepower dense area.

At the same time as the hearts of this group of people were shocked, the face of Fang Chang, who shot the arrow, was also full of surprise.

Is it okay to take a burst arrow from him?

Boy.

Then again!

Without hesitation, he pulled out another burst arrow worth 50 silver coins and put it on the bowstring, and Fang Chang was about to charge his shot, when the wind next to him slapped him on the shoulder.

"They've got it!"

Fang Chang's expression changed slightly, and he immediately made a decision.

"Retreat!"

……

Browse Room on Level B4 of Vault 404.

A digital screen on the wall simulates the flames of a fireplace, making a calming crackling sound.

It's a really nice environment.

The only downside is that it's easy to forget day and night.

Chu Guang didn't go outside to inspect today, but sat on the soft sofa, flipping through the popular science books taken from the shelves.

The title of the book is "Past, Present, Future".

Some of the things mentioned in it, although they are only superficial descriptions, still opened Chu Guang's eyes.

"As early as the twentieth year of the Prosperous Era, the scientific research ship of the Human Federation explored all the planets in the solar system and began the exploration plan of Nanmen II."

"Until the thirtieth year of the Prosperous Era, the South Gate II exploration plan has been preliminarily completed, and the first colony ship of the People's Union has successfully left the port......"

"South Gate 2 must be 4.24 light-years away from Earth."

"Is this mastery of faster-than-light navigation?"

When his gaze stopped on a certain line of description in the book, the expression on Chu Guang's face was a little strange.

“…… Gravitational bonds? ”

According to the description in the book, during the Age of Prosperity, physicists at the Human Union discovered that there was a "gravitational bond" between two massive objects.

Aerospace engineers call it a "gravitational channel."

Although it would take hundreds or even thousands of years for a spacecraft to fly from the solar system to other galaxies in the classical mode of motion, no matter what it accelerates, it can "jump" between two massive star systems in a relatively short time with the help of gravitational channels.

In general, there is a specific formula for calculating the time it takes to make a transition, which is directly proportional to the mass of the spacecraft and inversely proportional to the mass of the celestial body.

According to this formula, jumping between the solar system and the South Gate II system will actually be faster than jumping between Earth and Mars.

Yes, there are many gravitational channels.

It can exist between star systems, between planets within a star system, or even between star clusters. However, due to the problem of jump points, almost 99.99% of gravitational channels have no use value, even if they exist.

Fortunately, physicists from the Human Federation solved this problem, not only figuring out the method of determining the course of the gravitational channel, but also summing up the formula for calculating the jump point, making it possible for human civilization to use the gravitational channel to carry out "hyperspace navigation".

At the same time, it laid the foundation for the continuation of the era of prosperity.

Controlled fusion solves the problem of energy, while the discovery of gravitational channels makes it possible to colonize outside the solar system, solving both the problem of matter and living space.

Human civilization has also ushered in the first "ascension", taking the first step from the interstellar natives to the overlord of the star sea.

To be honest, this popular science book writes this content like a cool article.

Perhaps considering that the audience of the reading material is children, the colonial cabin that sails to the second south gate is simply described by the author as a paradise on earth.

As for now......

It's more like after a failed crossing.

Not only is the power completely wasted, but even the entire human union has been destroyed.

Chu Guang now somewhat understood Yin Fang's feelings.

The more I learned, the more frustrated I felt.

"Nima ......"

"It would be nice if this would have traveled a hundred years earlier!"

If you don't understand, just ask, is it too late to drink fake wine now?

According to the narrative of the book "Past, Present, and Future", if you travel to the early or even middle of the prosperous era, as long as you do not engage in "time travel" in the hibernation pod and "want to go to the future to see", you may not be able to see the collapse of the prosperous world until you die.

Chu Guang flipped back a page.

It is a pity that this popular science book does not give a detailed explanation of the "gravitational bond", just as most popular science books in parallel worlds do not paste the derivation process of the theory of relativity in its entirety, but only summarize it in general terms as "finding shortcuts from hyperspace".

Hyperspace Chu Guang still understands a little, which literally means multi-dimensional space.

And this is what surprised him the most.

In "modern physics", force is often explained as the process of collision between the particles that make up matter and the particles that transmit force. Under such a framework, the four fundamental forces, excluding gravity, can be interpreted and calculated consistently, and are experimentally compatible.

This is the "Standard Model".

It is also the cornerstone of modern physics.

However, this model is not perfect, just as Newton's classical mechanics could not explain the laws of motion of massive celestial bodies, this model also has the limitations of the times - it is not perfectly compatible with gravity.

As a result, some people proposed the "string theory", in which the three fundamental forces are interpreted as open strings and gravity as closed strings.

Based on this conjecture, gravity can transcend all dimensions.

The physics of the two worlds seem to be connected?

Although it is only one conclusion of two sets of theories.

Staring at the line of descriptions in his hand, Chu Guang suddenly thought of the recordings that had been unlocked on the B2 layer before, and the part about the form formation field mentioned in them.

“…… There can be gravitational ties between star clusters, but is there a similar bond between the universe and the universe? ”

It is not clear how much mass there is in the universe, this thing is like oil reserves, with the progress of exploration technology, it may "dig more and more".

But assuming that the mass and distance of the two universes are infinite, Chu Guang tried to bring in the simplified formula mentioned in the popular science book, and the mass of the spacecraft m was infinitesimal.

In other words, according to the theory of "gravitational bonds", even if there is such a bond between two parallel worlds, not even a single quark can be allowed to pass through the middle.

But what if it's a particle with a "0 rest mass"?

For example, photons.

The transmission of information requires carriers, and being able to exchange carriers means that the transmission of information is possible. As for what exactly this medium is, I'm afraid only physicists in the era of the Internet of People can answer.

"The formation field that connects parallel worlds is based on a similar theory."

"But how is the parallel world positioned?"

Chu Guang closed his eyes lightly and digested the knowledge he had just absorbed for a moment.

The intelligence of 20 points played a little bit.

If you weren't a manager, you might be able to become a world-shattering physicist on a parallel world.

At least the content of this book alone, if he updates to the database on the official website, it is enough to set off an earthquake in the physics community of the parallel world.

I can't figure out if I can still win the Nobel Prize.

But this is the ideal situation.

The parallel world of Earth does not have the ability to test these theories, and the superficial descriptions in popular science books are not enough to serve as rigorous scientific conclusions, at most as a "correct direction".

As for himself, there is a high probability that he will be regarded as the messenger of "higher civilization", and this popular science book will also most likely be regarded as evidence of "good intentions enlightenment of advanced civilization to earth civilization".

So here's the problem.

How many silver coins should this book sell?

Thinking of the Wind Brother in the server, the corners of Chu Guang's mouth couldn't help but curl up with a smile.

"Upgrade well."

"When you help this manager revive the People's Federation, I will give you the title of chief physicist of the Earth Federation, and by the way, how about giving you a few more Nobel Prizes?"

Of course.

If you can't bear it, don't blame your brother.

Just as Chu Guang turned the page down with a wicked smile, Xiao Qi's voice suddenly came from the side.

"Master."

"What's wrong?"

"Your Incendiary Corps signal is gone from the map."

Damn?!

A spirit, Chu Guang quickly closed the book in his hand and threw it aside, without saying a word, picked up the tablet on the table and opened the map.

Five green dots have disappeared from the eastern district of Qingquan City.

"System!"

The light blue window appeared in front of him, and Chu Guang directly cut to the list of players, and saw the online icons of several players, so he slowly breathed a sigh of relief.

It's just radio communication that's being disconnected, not a form-forming field!

The clones are still alive!

It was supposed to be some kind of signal jamming device that blocked their signal.

Although there is a possibility of accidents, the safety of the fuel rods is related to the use of Vault 401, and there is no room for accidents.

It only took a second to make a judgment, Chu Guang stretched out his index finger and tapped on the tablet, and clicked the "pre-edited" task command to send.

"Let the mosquito plane go over and see!"

Xiao Qi's energetic voice came.

"Okay!"

At the same time, on the runway north of Dawning City, a wooden plane turned its propellers and slowly drove out of the hangar door.

The mosquito, who was teaching a few of his apprentices how to operate a glider a minute ago, jumped into his own car without saying a word and buckled his pilot's cap made of dog skin to his head.

The two machine guns on the plane have been replaced by a 10mm Maxim-II from a small 7mm water pipe, and the entire wooden glider has completely changed from a reconnaissance aircraft to a ground attack aircraft.

The mosquito painted a shark tooth on the nose with paint, and the whole nose looked like a shark with its mouth open.

Although the skin does not add attack power, it looks cool.

Who would dare to say that he licked the ground like pee after watching it!

"Practice on your own! Except for don't go to the sky, you can play anything! ”

Four training aircraft were not equipped with weapons, and even if they went up, it would be useless.

However, as soon as they heard this, the four apprentices were instantly unhappy.

Death: "Gan! ”

Chasing souls: "Why don't you eat alone again!" ”

Killing God: "Come down and I'll open!" ”

Persuasion: "%¥#@!" ”

", can I do a serious task for you? Let's go to the reality to take a certificate first! ”

Killed: "Why do you have a certificate?!" ”

The mosquito beeped without much, and he pushed the electric gate to the bottom with a smile, pulled up the lever the moment it reached take-off speed, and lowered the helmet's windscreen at the same time.

The task is simple.

Cruising in the eastern district of Qingquan City, searching for Lao Bai and their signals in the near air.

If you find an accident, you will support it.

If it's safe to do so, scout where they're heading before they run out of energy.

Intuition tells mosquitoes that this kind of task is generally brushed out, and the second case can be basically ignored. Don't even think about it, eighty percent of them are really something!

The entire squad disappeared from the map.

The origin of the enemy is not small!

The blood surging all over the body, although there was still a distance of more than ten kilometers, the mosquito's index finger had already touched the safety of the fire.

"Brother Moe!"

"Wait for me!"

……

Eastern District, Qingquan City.

Gunfire sounded like firecrackers.

Let quit smoking stay where you are, contain the machine gun on the opposite side, and go around to the flank, Lao Bai plans to get rid of that nasty mortar first.

However, when he got to the position, he realized that things were far from being as simple as he thought.

I saw a heavy exoskeleton standing in the center of the flower bed in the community, with two armored arms supporting the ground, like a running-up posture, and the on the back fired non-stop.

Every time a cannonball is fired, a cloud of dust rises on the ground.

Where the hell is this mortar.

It's clearly an exoskeleton version of a self-propelled gun!

The three exoskeleton soldiers guarding around the "self-propelled artillery" immediately spotted Lao Bai the moment he appeared, and without saying a word, raised their rifles and strafed him.

was almost swept away, and Lao Bai, who was hiding behind the residential building, immediately poked his gun out of cover and fired back.

However, the other party was obviously not a vegetarian, and three assault rifles fired at the same time, and the ferocious fire suppressed him.

The three soldiers wearing exoskeletons did not stop there, and cooperated to disperse into a triangle in tacit understanding, and advanced towards him with alternate fire.

Looking at the crack in the bulletproof plate on his left arm, Lao Bai gritted his teeth and replaced the magazine, and first began to move towards the half-collapsed building next to him.

There was no signal in the whole area, the dust from the jamming bomb was blown over, and he didn't even know if his teammates were dead or alive.

But fortunately, the barrel on the back of the heavy exoskeleton has ceased firing, and they can feel less pressure in the future.

"...... Where the hell did these people come from!? ”

Could it be that Fang Chang smashed the plate and shipped the goods and was targeted by the plan?

Not really?!

They weren't the only ones who cut leeks.

Just when Lao Bai was secretly surprised in his heart, a gunshot rang out in the distance.

One of the three exoskeleton soldiers who were in hot pursuit, one of them was shot sideways, the bulletproof plate cracked, and his body was short and almost fell to the ground.

The teammates next to him immediately dragged the man and pulled him into the cover next to him. Forced by the deterrence of sniper rifles, they did not dare to come out of their bunkers, and could only make a detour from the ruins with a narrow field of view.

"Beautiful!"

Lao Bai was overjoyed in his heart, and did not let go of this once-in-a-lifetime opportunity, and immediately hit back with a shuttle, suppressing them who were preparing to make a detour.

The two sides are at a stalemate!

Leaning against each other in the bunker and placing cold guns.

However, to the heart of Lao Bai, the "self-propelled gun" began to fire again.

And this shell smashed directly into his sideways ten meters!

As a last resort, Lao Bai could only give up the suppression of the three exoskeleton soldiers and retreat to the building across the street from the community.

Ulun, who was crouching behind the cover, changed the magazine, gritted his teeth and chased after two of his teammates.

The other party's difficulties exceeded his expectations!

There was no news from Dimmit's side, but someone had bypassed their front and interspersed with mortar positions six hundred meters away from the area of the firefight.

With his index finger tapping on the helmet of the exoskeleton, Uren had a plan and shouted at the top of his voice.

"Surrender! You're already surrounded! ”

"We won't kill you, as long as you're willing to hand over the black box you stole from us!"

Sounds echoed through the streets.

Lao Bai, who was holding the assault rifle, frowned.

What is this guy talking about?

His human language is not as long as Fang, and he can jump a few words to the level, sometimes it's okay to say it slowly, but it's confusing to say it quickly.

However, if you don't understand it, you can't understand it, and you can't be weak in momentum.

Lao Bai learned the pronunciation of the opposite side and returned the sentence as it was.

"Surrender! You're surrounded! ”

Uren: "??? ”

We were surrounded and ok.

Is this man's brain hallucinating?

However, just as he was thinking this, a piercing scream suddenly came from the air.

Uren looked back sharply and saw a "shark" with a bloody mouth whizzing towards the mortar position behind them.

A flash of horror flashed in his eyes, and he yelled.

"Ted! Dodge! ”

Ted, who was wearing a heavy exoskeleton, apparently also noticed the abnormality in the sky, and quickly withdrew his arms that were stuck in the ground.

And yet—

It's too late!

Two 10mm machine guns spewed tongues of fire from the shark's bloody jaw!

"Ahh Go to hell! ”

The mosquitoes, which were squirming with the cabin and firing with their mouths, excitedly pulled the trigger to the bottom, and swept the exoskeleton carrying the barrel with the front sight.

Although the body is full of bulletproof plates, the exoskeleton is an exoskeleton after all, and no matter how many bulletproof plates are hung, they can't stop the firepower of the fixed wings.

In the face of the slashing of two 10mm machine guns, in just a few seconds, the heavy exoskeleton was smashed into a sieve.

The ammunition box and battery burst into sparks half a meter high in an instant, and the man didn't even have time to scream before he was blown to pieces along with the armor on his body.

The plane regained altitude and flew into the sky.

"Bastard!"

Staring desperately at the plane, Ulen's eyes were bloodshot.

His teeth were almost crushed, and his index finger saw the trigger go to the bottom, sweeping the entire magazine of bullets until the plane disappeared from view.

The same goes for the other two teammates.

Anger almost made them lose their minds.

However, as the leader of the team, the remnants of his sanity eventually allowed Ulren to calm down quickly.

The other side has air support!

Although it was just a ridiculous propeller plane, the two heavy machine guns were no joke, and their equipment was not advanced enough to defy common sense.

This is a river valley province far from the Death Coast, right on the other side's doorstep, and the supplies and reinforcements on the opposite side are almost unlimited, and there are no supplies and reinforcements available on his side.

Thinking of the man's shouting earlier, Ulun's heart sank slightly.

I don't know if that person is not joking.

These reinforcements are really coming in!

They only get one chance!

If they can't catch anyone, they can only resort to Plan B and continue north, seeking help from the marauders they have funded.

Without time to hesitate, Uren immediately pulled out the flare gun on his waist and fired a flare into the sky to alert his teammates in front.

Then, he shouted at the two teammates beside him.

"Withdraw!"

……

The battle is over.

The opposing side abandoned their positions and retreated, retreating into the ruins.

The mosquito circled in the sky several times, but finally did not find a second chance to dive, and began to return after confirming the safety of its own people.

Quit smoking took the box with the fuel rods, and after converging with Tempest and Fang Chang, he went for reinforcements in the direction of the flare.

Here they met Lao Bai.

"Damn?! You okay? Looking at the torn bulletproof plate on Lao Bai's chest, Fang Chang's face showed a surprised expression.

"Don't worry too much, I've been shot seven or eight times," Lao Bai removed the hanging bulletproof plate and said with emotion, "If this is in reality, I guess it's gone." ”

The wind coughed softly.

"Don't estimate, be confident."

Quit smoking nervously.

"Do you want to chase?"

Lao Bai shook his head.

"Chasing a hammer, the task is important. Call Night Ten back, and we're on our way as well...... In case they have reinforcements, it's trouble! ”

How to chase?

So far, their VM signal has not been restored, and the other party has retreated into the rubble.

You can't leave the fuel rods here.

Looking at the heavy exoskeleton that had exploded not far away, Fang Chang stepped forward and pulled the charred corpse out of the armor.

After groping around with the corpse for a while, Fang Chang's hand suddenly paused, and he took out a necklace from his neckline, on which was a charred iron plaque.

A torch is engraved on it.

"Did you find anything?" Lao Bai walked over and asked.

"Hmm."

Fang Chang nodded and shook the iron card in his hand.

"The symbol of the torch...... His name was engraved on it, but I didn't recognize the words. ”

Looking at the blackened exoskeleton wreckage, Lao Bai took a signal flare from his waist, tore off the pull ring and threw it next to the exoskeleton wreckage.

Billowing red smoke billowed from flares.

"I'll leave it to the NPCs here."

Lao Bai patted Fang Chang on the shoulder.

"Let's go."