Outside the Fifth Circle of Defense, hundreds of thousands of soldiers or civilians spraying parasols were ordered to withdraw immediately.

Neither the soldiers nor the civilians did not hesitate, and immediately returned to the interior of the defensive circle by running or riding in a car.

At this time, the defensive circle already had a decent wall, the wall was about two meters high, and the surface of the wall was equipped with a jet port every one meter.

With the flip of a switch, these vents will eject transcendental particles with maximum power, creating an absolutely solid circle of transcendental particles within three meters of the perimeter in front of the wall.

This is the greatest defense that the fifth front can do, and there is no way, who let this transcendental particle that can cause damage to alien monsters just be born!

As soon as the warriors entered the defensive circle, a large silver-gray shadow appeared on the edge of the sky.

I hadn't seen it for more than two hours, and the silver-gray shadows in this patch seemed to have grown again, and their color seemed to have deepened a lot.

I don't know if it was the outstanding performance of the last wave of defense that caused these alien monsters to have a more aggressive offensive strategy.

Whether this is the reason or not, the human side has made all the preparations, and there is absolutely no possibility of being afraid of the other side.

Buzzing, like the flight of hundreds of millions of hornets, the dense sound makes the human side can't help but blow up their scalps.

This feeling is really uncomfortable, and many civilians who are relatively timid can't help but shrink their necks and bare their teeth.

But at this point, they had no chance of retreating, so they had to clench the weapons in their hands and look up firmly at the swarm of mechanical insects flying in the air.

It wasn't until the mechanical insect swarm came a kilometer away that a terrible roar suddenly sounded from inside the defensive circle, and all the fighters could be heard subconsciously reacting.

"Fire !!"

The civilians also shuddered in such a roar and moved quickly, although they were a beat slower and did not have the professionalism of the soldiers, but because they were planned, their reactions were not slow.

When the first shell exploded in the center of the army of mechanical insects, the war of the fifth line of defense began!

The initial battle was no different from a defensive battle on the fourth front, with every moment a shell thrown out, and as long as it exploded, a large area of mechanical insects could be emptied.

The dense artillery bombardment made it impossible for these mechanical insect armies to rush within a kilometer, and this kilometer distance was completely cleared by the human side with cannonballs.

Of course, there are also some lucky mechanical insects that rushed within a kilometer, and were extremely lucky enough to rush to the first 700 meters.

But after arriving here, the mechanical insects that were lucky enough to rush in fell to the ground one after another, because the distance of seven hundred meters in front of them had been sprayed with transcendental particles by the human side, making it impossible for these mechanical insects to break through at all.

From the very beginning, this war was on the side of humanity, because humanity had prepared in advance.

In this way, everything that happened on the battlefield was carried out in an orderly manner as Lin Hong and Will had planned.

Will was also happy that nothing had happened, so he slowly counted his calculations and gradually began to prepare for the next plan.

An hour passed.

Two hours passed.

Three hours passed successfully and smoothly.

At this time, the mechanical insect swarm had only advanced to a distance of four hundred meters, and they were using their overwhelming numbers to consume the human defense circle sprinkled with transcendental particles around it.

Artillery shells on the human side rarely bombard in parallel anymore, and generally bombard at a distance of more than 10 meters in mid-air.

Because these sprayed defensive rings have successfully knocked down a large number of mechanical insects that are actively dying, and they have spread a thin layer of silver-gray, dust-like surface on the ground.

The fourth hour passed quickly.

The alien mechanical insects used their numerical superiority to break through the distance of two hundred meters, and they were only two hundred meters away from the human side.

As long as they break through these two hundred meters, I believe that the human side will soon be unable to hold on and will be eaten clean by them.

But, in fact, is that really the case?

The hands quickly jumped to the fifth hour, and the pressure on the human side increased dramatically, as the mechanical insects were only thirty meters away from them.

With the slightest carelessness at this distance, the gap on one side of humanity will be forcibly broken by the other side.

In the command room, the supreme commander of the fifth line of defense had a serious face and a solemn expression.

The staff officer next to him was quite anxious, and his tone of voice was extremely fast, only to hear him say: "Old Cao! Can't hold on any longer! We must activate the last three meters of defense, or our warriors will definitely not be able to withstand the attack of these terrifying monsters! ”

The staff officer's words made the officer's cheeks twitch a few times, but he still didn't say a word.

"The current situation is extremely dangerous, once there is a small breach in our front, there will be a burst of the embankment at any time, and even if we want to use a three-meter defense line at that time, it will be completely late!"

The staff officer's words made the old chief Cao's expression twitch again, and his lips squirmed as if he wanted to open his mouth to speak, but his throat rolled a little, and he still held on.

At this moment, a communication soldier ran in quickly, "Report, the fourth stage goal has been completed!" ”

"Activate the three-meter defense!! Fast!!! Commander Cao barely waited for the signal soldier to finish speaking, he immediately turned his head and yelled at a guy at the door who was ready to operate the computer at any time.

The soldier was frightened by the commander's this, and his nerves tightened instantly, and his hands crackled on the keyboard like clockwork.

In less than half a second, his index finger slammed into the ENTER key, making a crisp click.

Almost at the same moment, all the jets buried in the fence came into motion, popping like an electric shower for watering flowers in a park, spewing out an umbrella-shaped white mist.

The three meters in front of the entire fence were instantly shrouded in umbrella-shaped white mist, forming an impermeable protective film.

At this moment, a mechanical insect broke through the thirty-meter defense line and quickly entered the first five meters.

Judging from the direction it was heading, it was clear that it had taken aim at a civilian girl who was changing magazines, and this girl had a resolute look on her face, without the slightest fear or timidity that should be expected at this age.

There is no distinction between male and female mechanical insects, and in its execution order library, all these humans in front of them are in the ranks of nirvana.

It flew as fast as the wind, and it only took half a second to break through three meters from a distance of five meters, and it only took the next half a second for it to rush into the girl's body in one fell swoop.

However, it had just moved forward when a stone about its size suddenly appeared in the air in front of it, shining with a silvery-white metallic luster, which was quite delicious to look at.

Without the slightest hesitation, the mechanical insect stepped forward and clicked and smothered, and with a full burp, a brother who looked exactly like it burrowed out of its body.

But what it didn't notice was that the skin on it and its brother had changed.

From the original whole body silver gray to the current silver gray and silver white, these two colors are just a dark and a bright problem, if you don't pay attention to it, it's really hard to notice.

Splitting another brother, the mechanical insect expressed its desire to be happy, but it was obviously more important to carry out the orders of the command library, so it aimed at its own target, and it was only 0.0000001 seconds away from breaking into the opponent's body.

But before it could make a move, a long crack suddenly opened in its executing command library, and then countless commands fell from the sky, all of which expressed one meaning.

That's "Stop the action!" 】

Almost instantly, its body received such an order, its wings did not move at this moment, its body did not move at this moment, and even its sharp teeth, which gnawed at all the time, stopped moving.

Without the flapping of its wings, its body could no longer hold in mid-air, falling from a height of more than three meters.

It slammed into the ground, raising several quark-level dust from the ground to fly all over the sky.

This happened not only here, but also elsewhere in the defensive line.

The opening of the three-meter battle line gave all the soldiers the most intuitive feeling, that is, the silver-white mist in front of them was thicker, even if they didn't need to spray some more, they would definitely be able to block the mechanical insect swarm impermeable.

The opening of this line of defense has also made the defensive circle stronger.

Half an hour later, the thirty-meter defensive circle was breached, but the three-meter defense line steadily caught the attack of the mechanical insect army.

"Not bad! That's a pretty good idea! You can report to your superiors, the information here! Lao Cao nodded with satisfaction with the defense of the three-meter defensive line, but hot tears flowed from his smiling face.

The staff officer stood behind him with tears in his eyes, but he nodded seriously, "Well, it's all sent up, everything that can be done has been done!" ”

"Yes! We did everything we could! Lao Cao nodded heavily.

Just as he was saying this, a communications soldier suddenly shouted: "Chief, chief of staff, the number of enemies has suddenly increased dramatically!" ”

When the communication soldiers shouted loudly, the defense circle was also suddenly mutated, and they screamed again and again.

Lao Cao and the chief of staff both changed their faces, glanced at each other, their expressions became quite solemn, and said, "At this moment, it's still here!" ”

Lao Cao immediately shouted to the person who was in charge of the three-meter defense line: "Increase the three-meter defense line with full power, and be sure to tilt all the ammunition as quickly as possible!" ”

"Yes!" The soldier replied loudly, and then quickly tapped the keyboard.

At the same time, outside the command headquarters, the position of the defensive circle, there were constantly miserable screams, the two looked at each other and smiled bitterly, although the three-meter defense line was reliable, but after all, it still failed to resist the sudden increase of mechanical insects.

The two of them had already known about the other party's increase in troops, and the plan about Will had been revealed to them without reservation, so they were only holding on to hope, hoping that the three-meter defense line could resist the opponent's sudden increase in attack.

But unexpectedly, in the end, he still couldn't resist.

And there is obviously a gap in this fifth line of defense, so it is not far from the breaking.

"All fighters obey orders, they can fire freely at full power, and all ammunition must be fired!" Lao Cao picked up the wheat and shouted loudly at the wheat with tears in his eyes, making the hearts of all the soldiers sway at this moment.

About fifteen minutes later, the fifth line of defense was breached again, and the last remnant of the human side, the Chief of Staff, pressed the self-detonation device of the defense line with tears in his eyes.

In an instant, the bomb that had been buried under the wall was detonated, and the silver-white dust was blown into the air, and a large area of alien mechanical insects was swept down.

At this time, the alien mechanical insects that were down covered the entire ground, and the ground that was originally a little red was paved with a silver-gray color, which looked strange.