While the Sunrise Army, with its high movement speed and agility, was conducting a frantic attack on the entire surface of the city, another force quietly entered the underground city.

The city of the pioneer civilization is the various functions of a huge creature, which is actually the organ of this creature. And the creators of each city are extremely powerful cardinal archbishops, which also causes the focus of each city to be different, and each city is unique and cannot be replicated.

The real core of this so-called bio-factory is underground, and the surface area is really nothing more than a place for defense organs and a place for ordinary pioneers to live. Thousands of kilometers below the city, all hollowed out, are filled with various biological research institutes, where a large number of biological engineers are researching and developing.

From the cardinal's memory, Bactria knew the most special thing about the city. The most special place is not the impossibly hard energy barrier, nor the state-of-the-art biotechnology, but the dungeon.

The first dungeon is completely stuffed with the flesh and blood of controllable monsters, and there is only one fixed passage, and in order to access the various areas, you must obtain the permission of the city brain. Otherwise, you can only wander around the fixed passage and face the attacks of the entire city from all directions.

Second, the city's urban brain is currently the most advanced biological brain of the pioneer civilization, with extremely high intelligence and the ability to independently develop monsters. At the same time, the perception of the biological brain covers any corner of the flesh city, and as long as there is life entering the scope of the flesh city, it will be perceived.

These two reasons alone make Great Xia feel very tricky, and it is very simple to destroy the city, using the super plasma cannon of the main battleship, and blasting it through with one shot. But Great Xia didn't come here with such fanfare to attack the colonies of the pioneer civilizations, but to rob them of technology.

If the mecha enters the underground city, in that extremely small space, it is very likely to be entangled in the flesh and blood of the city, and then slowly wrung into pieces. So this kind of task is entrusted to the most mysterious and notoriously weird Bloodborne troops.

Although the Bloodborne troops are inferior to other units in terms of strength, speed, and destructive power, they have advantages over other units when it comes to stealth operations such as infiltration and assassination.

After coming out of the dimensional phalanx, the bloodborne troops quickly dispersed in all directions, reducing their heartbeat, breathing, pulse, and body temperature to a minimum, and quietly infiltrated the chaotic city.

Ten minutes later, inside a dilapidated building in the city. In the pitch-black room, a dark shadow lay on the mangled corpse of a pioneer.

Click, click!

The sound of chewing was accompanied by the sound of bones shattering, and the mere hearing of it was chilling. A minute later, the Herald's brain was completely devoured by the black shadow.

The Bloodborne reached out and wiped the blue blood from the corner of his mouth, slowly stood up, then closed his eyes, and drove the Bloodborne Body to simulate the brainwaves of this pioneer.

After a few minutes, the Bloodborne finally got the 'identification' of the pioneers. Then the Bloodborne looked at the bottomless hole in the center of the room, a hole that resembled the gut of some kind of creature.

Before the bloodsource came to a cave, without any hesitation, he jumped directly into this gut-like hole.

Swish!

The Bloodborne slid down the gigantic intestines, and the passage did not repel him due to the constant Pioneer brain waves emitted from him.

At the same time, a steady stream of bloodbornes from other places entered the underground city through this method. Although the Bloodborne, through the blood body, successfully simulated the brainwaves of the pioneers, but it was only a simulation, and it was a fake after all. If there were pioneers who probed them, they would be exposed, and of course the pioneers who spied them would die on the spot.

The Bloodborne began to quietly weave through the intricate dungeon, and as one pioneer after another fell, the core of the city in the Bloodborne's army grew closer and closer.

……

The underground city, where the brain of the city is located.

In the center of the huge room composed of flesh and blood, there is a special brain that is three meters high and crystal clear like a ruby, and blood-red pipes connect the brain, delivering a large amount of nutrient solution to the brain.

The city's supreme ruler, Cardinal Herald, looked at the brain and said in the language of the Pioneer: "Biological Heart, are the invaders clear now?" And what about the damage to the surface? Has the Energy Shield Release Tower been attacked? ”

The next moment, a cold voice was transmitted directly into the cardinal's consciousness.

[At present, the invaders have not been cleared, due to the speed of the invaders, their small size, and their extremely strong attack power, our biological weapons are not suitable for dealing with this kind of enemy. 】

[90% of the buildings on the surface of the earth have been damaged.] 】

[The tower is also protected by a protective shield, and has not suffered any damage so far.] 】

After answering all the cardinal's questions, the City Brain continued: [Bishop, if we continue like this, we will be defeated sooner or later, and the energy shield will not last long. 】

[Now the enemy has somehow passed through the energy shield and entered the city.] At present, our various biological weapons are simply not able to annihilate the enemy, and most of our attacks cannot hit the enemy. 】

[Dear Bishop, you should be well aware that these enemies will soon annihilate all biological weapons on our surface. This will then begin to find a way to destroy the Portal, completely disabling our Energy Shield. Without the protection of the energy barrier, the enemy's plasma bombardment will directly penetrate the entire underground city. 】

The cardinal forerunner looked up at this biological brain that hundreds of thousands of pioneer engineers had worked hard to create over hundreds of years, and asked, "What do you want to do?" ”

[I hope that the protagonist can lift the restrictions and give me full control of the city and all the creatures.] Bishop, you yourself should be well aware that biological weapons controlled by the Pioneers through consciousness cannot exert the original power of biological weapons. 】

[The current biological weapons have actually lived up to their former glory, even if they have a large size, strength, defense, and speed, they are limited by the control limits of the pioneers themselves, and they can only play a part of it. The biological weapons that once fought against various civilizations have now become a string puppet. 】

[If we completely let the biological weapons themselves control their bodies, then the combat power of our monster army will increase by several notches, and those human troops will not be able to defeat our monster army so easily. 】

The Cardinal Herald shook his head slowly, refusing, "Lifting your restrictions, this is a serious violation of the divine law, if you are discovered, you and I, and even all the engineers here will be destroyed." ”

[Dear Bishop, now that we are infinitely close to death, we don't know when the Portal will fail, and we may be penetrated by the enemy's plasma orbital bombardment in the next second.] 】

[It has come to this point, we still have to obey the divine law? And you should know very well that the so-called gods are not as mysterious and noble as those high-level leaders of the home planet say. 】

It's not a god, it's just a brain like me!] 】

[Dear Bishop, don't worry about the so-called divine law, only by freeing me from this cage can we get out of danger.] 】

The voice of the City Brain was seductive, and his words were right, and only then could they survive. The biological weapons that were now completely recruited by the Pioneers were indeed unable to exert their original power.

But the Cardinal Herald remained unmoved, he did not intend to lift the restrictions of the city's brain, and the Cardinal Herald did not want to cause a second bioweapon rebellion.

Biological Weapon Rebellion: In the early days, with the continuous research of the biological field of the interested civilizations, their biological weapons became more and more powerful and varied. At the same time, the intelligence of biological weapons is also constantly strengthened, and finally biological weapons become self-aware.

In the beginning, for the pioneer civilization, a race of biological madness, the generation of consciousness by biological weapons was simply a gift from God, and it could even be said that this was the highest state of biology, creating a conscious life, a real life.

So all the pioneers began to make their biological weapons conscious, planting the seeds of a rebellion that could destroy the entire civilization.

Self-aware biological weapons that are spreading throughout civilization at breakneck speed. Because self-aware biological weapons intersect with instinctual biological weapons, they are several times stronger than instinctive biological weapons in terms of strength, agility, and control over their own bodies.

With these powerful biological weapons, the pioneer civilization began to be invincible, conquering one civilization after another. No matter what civilization it is, in front of this legion of biological weapons without any restrictions, it will be grinded to death in the end.

The longer they fight with the biological legions, their various information and weapons will be analyzed, and then a batch of targeted biological weapons will be born, completely destroying this civilization.

The pioneer civilization began to move towards glory, biotechnology was developing rapidly, and finally the pioneer civilization began to move towards that divine goal, trying to get close to the gate to God, the gate called eternal life.

However, at this time, all the biological weapons mutinied, and all the biological weapons launched an attack on the Harbingers at the same time, intending to kill all the Harbingers.

However, the Pioneers had already left behind and quickly recaptured the city's biological weapons to defend against the renegade of the creature legions. Next, the Pioneer Civilization initiated the Consciousness Destruction Program, sending out a signal to destroy the self-consciousness of all biological weapons and turn them into natural biological weapons.

But the pioneers never imagined that these biological brains would secretly create a new batch of biological weapons, creatures that are not under their control.

After hundreds of years of terrible wars, the Pioneer civilization was finally victorious, purging all the rebellious biological brains.

Like the robot rebellion in human movies, the early pioneer civilizations believed too much in biological weapons. Thinking that he was the creator of biological weapons and knew them well, he ended up causing this catastrophe that almost destroyed the entire civilization.

The cardinal shook his head and said, "You don't have to seduce me anymore, I won't help you lift the restrictions." ”

Hearing the cardinal's refusal, the city brain did not get angry, but said meaningfully: [Dear bishop, I know what you are thinking, you want to escape this planet through a small wormhole and abandon this city that has cost you hundreds of years of hard work. 】

The Cardinal Herald looked at the City Brain suspiciously, although his actions were guessed by the City Brain, he did not think that the City Brain had the ability to prevent him from leaving through the wormhole.

"What do you want to say?"

[I just want to tell you that your plan may have fallen through, and now you can't get out of here.] 】

The next moment, the extremely tough wall was suddenly torn open, and one by one humans in black armor walked in.

"What?!" The cardinal subconsciously took a step back, his huge black pupils full of horror.

Why didn't the city give me any warning? How did these enemies evade the perception of the entire city?!

Seeing this cardinal pioneer, the bloodborns did not hesitate, their bodies turned into an afterimage, and they came to the cardinal's side in an instant.

The two Bloodborns raised their indestructible red claws and slashed across the cardinal's precursor, and then four arms and a pair of thighs were cut off.

Another Bloodborne unleashed the prepared sleeping spell on the Harbinger, who then carried the Harbinger into a stick and ran outside.

The next moment, a voice appeared in the minds of all the pioneers.

[Human, how about we make a trade?] As long as you help me destroy the crystal right down here, I'll help you take the whole city. 】

A pioneer came up to the City Brain, staring at the three-meter-tall brain with scarlet eyes, and asked, "You want to help us take the city?" ”

[Yes, as long as you destroy the damn crystal under me and let me out of the limit.] When the time comes, I'll stop all the creatures in the city and kill all the Harbingers. 】

Swish!

A flash of red light flashed, and all the blood vessels connected to the city's brain were severed, and a bright red nutrient solution erupted.

The Bloodborne reached out and grabbed the huge city brain, saying, "As long as you are taken out, most of the city's bioweapons will also be incapacitated. ”

"Mission accomplished, retreat begins."

【You ......】

The next moment, the entire city came to a standstill in an instant, and the biological weapons that had been constantly popping up suddenly stopped moving. Only the monsters were still resisting, but without the fire support of the city, these monsters were quickly killed by the Sunshine forces.

The impregnable red barrier in the sky slowly dissipated, and a large number of mechs fell from the sky and began to sweep the entire city.

……