"Tell Zhang Yuan to preserve the living force and retreat in an orderly manner, and we will wait until the reinforcements of Xiyao and Plashi arrive. When the time comes, sometimes fight hard for him!"

"Inform Xu Da and ask him to take the left wing troops to push back the bugs over there to me and maintain the consistency of the entire defense line!"

"Planetary weapons platform ceasefire preparations, a ceasefire artillery bombardment of the coordinates of the second line of defense 33345.00087!"

The veteran general Guangwei issued orders in an orderly manner, analyzed the most correct information in the chaotic battle data that made people dizzy at a glance, and then issued orders as accurate as a blade.

The entire line of defense operated with the precision and efficiency of a machine under the orders of Guangwei.

Known as the god of war, Jeffrey is good at attacking, because his combat career before quitting the military department was attacking, fighting pirates, bugs, and mutinies. Guangwei is different, he is good at defense, because of the particularity of the Orientals, they have no sense of aggression at all, and they have no interest in expanding their territory, this is a group of guys who like to toss around in their own homes behind closed doors.

So Guangwei has been fighting defensive wars all his life.

This is also another reason why Xiao Ming asked Guangwei instead of Geoffrey at that time.

"Activate the retargeting silos! Shoot me all the X-Knell missiles. The swarm is going to push us flat, so let the bugs see how naïve they are!"

With Guangwei's order, thousands of missile silos like skyscrapers opened the safety locks in the airspace defense, and thousands of black and red missiles with black and red Grim Reaper painted on the missile warheads entered the launch state.

Each missile has a height of several hundred meters and a diameter of more than 100 meters. The huge ones are like small warships. These giant creatures are officially called "Redirected Bug Multiple Destruction Missiles". The propulsion section is equipped with a miniature passive jump engine. Can respond to the migration network of fleets and defense bases. Perform a space jump within 40 astronomical units.

After jumping 10,000 kilometers to the target, the propulsion unit activates the sub-light engine, followed by precise guided propulsion at the speed of 0.7 light.

Its warhead is equipped with three parts, one is the photon binding bomb, which is the strongest energy bomb currently in human possession, and the second part is the antimatter missile, which will be officially activated after the photon binding bomb breaks through the target's armor defense.

Because of the nature of antimatter, this is arguably the most powerful chain reaction bomb that humanity can now master.

The last part is a pheromone, which is not an entity. Rather, it is a special kind of information broadcasting, which has only one effect, interfering with the psychic network of the biters and causing them to be dulled for a period of time. This is equivalent to a kind of "shock bomb" for insects.

With three attack modes, the X-Death Knell is extremely lethal. The only drawback is that this thing can basically only be used for defensive warfare because of its size, and the cost of this thing is extremely high, not the kind of ordinary energy bullets that can be fired at will without heartache at all.

Thousands of X-Knells rushed to the swarm, lighting up a long series of bright bursts of light in the deep space of the universe, as if thousands of tiny suns had suddenly been lit up.

These "little suns" are connected together, completely illuminating the airspace beyond fifteen astronomical units.

Rumble. Boom, boom!

There is no sound in space. But the seemingly endless explosion that filled the entire line of sight still made the blood rush of the soldiers of the entire defense line, and since the battle half an hour ago, the entire defense line has slowly shrunk in a passive defensive posture, although the soldiers know why they are doing this, but they still can't stop the blood of these fighters.

Which of these warriors in the Thousand Domains Plain is not an elite? It can be said that being able to come to this defense line itself is an affirmation of identity and strength.

Everyone is elite, which one is willing to be a shrinking turtle? Although they know that defense is needed strategically, these elite fighters are holding back their strength one by one and preparing to fight back.

The advance of the swarm continues, and although thousands of X-Knells have caused them great losses, it is nothing to the entire swarm.

The brood in the rear is collecting all the materials on the battlefield at full speed, whether it is the remains of insect corpses, meteorites, or fragments of human battleship artillery arrays, all of which will be collected and eventually turned into usable things.

Through this month's research, human scientists were shocked to find that the brood has reached an incredible material-energy efficiency after 2,000 years of super-rapid evolution.

Through biological tissues, i.e., bugs or the corpses of humans or star beasts, the brood can spawn a large number of new combat units, and the collection of inorganic and energy substances is more directly useful.

The energy will be completely squeezed out to form the energy required for various activities of the brood, including command, hatching, attacking, defending, regeneration, etc., and those completely inorganic matter, such as the residue of meteorite refining, the metal fragments of battleships, etc., will be combined into something more direct - biological bombs.

This is one of the most frustrating abilities of the brood for humans, and anything that can be collected by them will be made into this biobomb if it cannot be used directly.

The mother nest secretes a special secretion that cannot be analyzed by humans for the time being, and this secretion can perform an extremely efficient and miraculous effect, that is, matter-energy conversion.

The so-called energy is the "phenomenon" that occurs when one thing transforms into another. Matter-energy conversion is an extremely complex way.

The Starship Power Furnace used by humans is this way, which provides energy to the massive starship by directly injecting matter and then converting it into energy.

And the source power furnace, that is, artificial stars, which is now gradually being implemented, operates in this way. And these object-energy conversion reactions require an extremely complex program to activate on the human side.

It's like if the power furnace of all starships is completely shut down and started again, it will take at least half an hour of "delay" time. And it also takes a long time after starting to reach maximum power.

But the mother nest can be secreted with this special kind of secretion. Let this object-energy conversion be done in an instant. And this means that the energy is uncontrollable. In the end, it's -- boom!

In fact, in the conceptual weapons armament of human beings, the material-energy attack has also entered the stage of physical experiments, but the most successful experimental model at present also needs a super starship as big as the Dark Moon to be installed, and what is even more embarrassing is that once such a big guy is installed, don't even think about installing any other weapons on the starship, because the power furnace output can't keep up.

So this thing is still just a conceptual weapon.

But the Pollav worm was able to put it into practice a thousand years ago. Although the power of each biological bomb is not large, that is, an attack of more than 100,000 degrees (in a space war, such an attack degree can only be considered to be moderately low). But if you can't stand the brood, it doesn't cost anything to make these things.

The "matter" is collected from the battlefield, and the energy is also collected, and the brood has almost no loss except for the transformation in the middle, that is, unless the entire battlefield has been completely "blank area", otherwise the brood does not have any pressure to make these things.

An attack of 100,000 degrees is indeed not terrible, but if there are hundreds or thousands of such hundreds of thousands of degrees of attack every ten minutes, no one can stand it for a long time.

All humans fight against insects, except for attacking swarms. There's also an extra task to clean up the battlefield as much as possible. Although it cannot be completely contained, it will always have a little effect.

The human side has set off the X-death knell twice. The vanguard of the anti-swarm was beaten back. The swarm immediately launched the same counterattack, and the biological bombs that had accumulated until this time were smashed into the second line of defense of the Thousand Domains Plain like a meteorite rain.

The combined shield of the second line of defense lasted only two minutes before it was smashed, and even the combined shield of tens of thousands of shield generators could not block the onslaught of nearly 100,000 biological bombs.

The only good news is that even with so many broods present, it is not so easy to produce hundreds of thousands of biobombs, not only in terms of production time, but also in terms of what is available around.

"The second line of defense was broken through, and all personnel retreated to the third line of defense!"

"The gravitational trap is fully activated, destroying all of the swarm's escape paths. The A3, A6, A11 fleets are concentrated on the third line of defense to buy time for the troops of the second line of defense to retreat!"

"Planetary weapon platform fires again, coordinates ......"

"The floating cannon matrix is activated, and control is handed over to the Doji Base Control Center!"

"All Spark production lines have entered the state of full power, and the first batch of Spark fighters have been put into the third line of defense!"

Twenty astronomical units of the defense area, there are a total of seven lines of defense, the first three are peripheral defenses, used to delay time, basically there is not much staffing, all of them are used automatic artillery matrices and various automatic fleets, whose role is to exchange space for time, in order to wait for the arrival of backups.

And starting from the fourth line of defense, because it has penetrated to the last ten astronomical units, at this position, even if the defensive battle officially enters the white-hot stage, the casualties will definitely rise in a straight line at that time.

Although everyone on the defensive line was aware of this, Guangwei was still delaying the arrival of this time as much as possible. There are still three hours before the reinforcements can arrive, and at that time a full-scale counterattack can be launched, and before that, not only must the entire defense line be held, but also ensure that its own losses will not be too large, otherwise the defense line will not be able to fight back, and the reinforcements will not be able to do too much.

Even if the reinforcements are up to two group armies, just by number, this amount of strength is just a drop in the bucket for the swarm, and only tactical cooperation can effectively fight the swarm.

The super-heavy artillery matrix on the planetary weapon platform has been set on fire several times, and except for one tentative attack on one of the first-level broods of the swarm, there has been no further attack on the brood.

The brood's defense system can make them resist the attack of the planetary weapon platform to a large extent, and this spatial defense mechanism can make the brood have a strong resistance to concentrated fire attacks, but it is not well resistant to scattered dense attacks, so the best way to deal with the brood is to attack in groups, so that countless firepower can besiege it, rather than concentrate fire to hit a little.

In fact, this defense mechanism is very similar to the fleet's combined shield, which is specifically used for high-power concentrated attacks.

As for the cluster attack, unless the tens of millions of ship insects and hundreds of millions of space bugs outside the brood are defeated, how can it be possible to launch a cluster attack on the brood?

And human beings have learned smart now, the swarm brood has the ability to cause a space storm, so it is impossible for a large-scale fleet cluster to attack the brood, in case the brood can't escape, a direct space storm, everyone will be finished together.

Therefore, human beings have always been in an embarrassing state between not being able to defeat and not daring to fight, which is why this time all human scientists gathered in the Thousand Domains Plain, only by thoroughly studying this captured second-level brood, human beings will truly master the effective method of fighting against the insect swarm brood for the first time.

Humans believe this, and the swarm seems to understand it, so they launch a frantic attack.

For an airspace that is only the size of an ordinary star system in a star sector, the forces that can be invested to storm a star sector below can be used, which shows the determination of the swarm. The only thing to be thankful for is that the insect swarm gave the human race a month because they had to wait for Xiao Ming to leave, and the human race did not waste this month at all, and the entire defense line of the Thousand Domains Plain did not dare to say that it was impregnable and could not fall, but at least it was a bone that was extremely believed in gnawing.

"Report, the fast anti-fleet has completed a charge, the R7, 9, 10, 13, and 16 fleets have all been wiped out, and the remaining fleets are being reorganized!"

"Order all the fast anti-fleet to enter a state of rectification, how is the production of the new fast anti-fleet?"

"Maximum productivity has been reached, but the ratio to consumption is 7.5 times!"

"Understood, the fast anti-fleet continues to pause, and orders the C8 to C17 fleets to enter the airspace between the third and fourth defense lines!"

The fast reaction fleet is completely composed of automatic fleets, and its essence is a group of suicide squads, which are just like the cavalry troops in the ancient battlefield, quickly rushing into the battlefield, cutting the enemy's formation, disrupting the opponent's attack rhythm, and thus giving the defense line time to buffer.

The largest type of starship in the fast anti-fleet is the level of medium-sized starships, all of which are high-defense, high-speed, and low-attack types. Their original purpose is to harass the enemy formation, so they don't need to have too much attack power. Of course, it's not enough to have too low an attack, so in order to make up for the weakness of low attack power, all fast anti-star ships are equipped with a huge number of floating guns.

Completely opposite to the starships of the fast anti-fleet, the floating cannon is a typical type of low speed, low defense, and high attack, they are all semi-fixed fire points, and the movement speed only needs to reach the standard speed of dodging in the local area, and other movement abilities can be completely abandoned, and then all abilities are concentrated on the attack side.

A floating cannon can be attacked by a space bug up to three times before it is over, but in the same way, they can take out a shipworm in one shot. Because all float guns are equipped with angular momentum acceleration devices that can ignore inertial muzzle shifts, even the most nimble space bugs can evade the tracking fire of the float guns.

With countless floating cannons, you can make up for the weakness of the lack of attack power of the fast anti-fleet and efficiently complete the battlefield cutting task.

Of course, whether it's a quick anti-fleet or a floating cannon, because of the unreasonable "biological bomb" recovery factor of the swarm, these can't be used casually, and the floating cannons on the defense line and friendly starships can be recovered at any time, and there is no way to rush directly into the swarm phalanx.

In addition, the rapid anti-fleet charge is at least two-thirds of the loss, and the rear production cannot keep up, so it can only be used when the defense line is retreating, or when the battle situation is inferior. (To be continued.) )