Let's check if there is a signal from the guinea pig. ”

Director Mu paused and continued.

He was referring to the guinea pig that carried the soul of the abyssal beast.

On everyone's tail, a miniature signal receiver is strapped, and once it comes within 100 meters of the little mouse, there will be a slight vibration.

It's a pity that there is a dead silence on everyone's tail now, and they are not so lucky, as soon as they enter the ground, they will encounter the target.

"Let's move on."

Director Mu waved his claws, "Be vigilant, move forward, there will be danger at any time!" ”

The next part of the journey is indeed full of dangers and dangers.

The eruption of the underground spiritual vein, coupled with the explosion of the pipeline gas network, completely changed the structure of the underground, the rock crevices are covered with sharp rubble like fangs, in some places, there are gravel and dust falling overhead, and in some places, because of the bursting of water pipes or the wild surge of groundwater, the formation of a turbulent water flow, I don't know where to go underground dark river, if you fall into it, maybe it will be swept out dozens of miles away, into a fragmented floating corpse.

After a labyrinth of ups and downs, the communication cable was quickly exhausted, and they could only set up a small signal base station on the spot, and then gave up wired communication and continued to move forward.

Then, they encountered the first large-scale mutant insects since they had gone deep into the ground, numbering in the hundreds, mainly composed of spiders.

Everyone immediately drew their weapons, and their claws and tails instantly became cold and shining, and they were unstoppable.

Strangely, these mutant insects do not attack them, but circle in place like headless flies until they are exhausted and fall to the ground.

Even when they cautiously bypassed the mutant bug, the mutant bug didn't look at them.

A similar scene happened a few times after that, where the mutant worm was like a puppet that had cut the strings, completely lost the purpose of survival and the instinct to hunt, and became a geisman that still had a residual body, but nothing more.

"The brain tissue and neural networks of these mutant insects have also been affected by the explosion of underground spiritual veins - their brains and neural networks are originally very primitive, and some even have no brains, and naturally their small souls have no solid support, and they are easily disturbed."

Director Mu said, "After the earthquake, the insects are chaotic, which is an extremely common phenomenon, and the disturbance caused by the eruption of the underground spiritual veins will only be a hundred times stronger than that of ordinary earthquakes. ”

"That's good news."

Looking at the mutant insects that twisted and danced wildly in front of him, Chu Ge said, "This at least shows that the mutant insects have not resumed their command in the formation and turned into a terrifying insect tide, in other words, everything that happened in the underground world is not quite like a conspiracy carefully planned by the Celestial Organization, right?" ”

"Perhaps." Director Mu was noncommittal.

Continuing to go deep into the ground, after being scraped by the rubble and bruised all over his body, he barely managed to squeeze through the crack in the rock with one finger, and everyone saw an even more amazing scene.

In front of them, there was a turbulent and majestic underground river.

On both sides of the dark river, there are rubble and broken steel bars everywhere, like a sharp knife inserted in it.

Above the dark river, in the middle of the cavern, a huge rock stood abruptly, like a springboard that sloped upward.

At this moment, on top of the boulder, there are groups of at least hundreds of rats.

All of them were large, red-eyed, foaming rats from the corners of their mouths.

The fierce rat standing at the core of the team even made a gorgeous crown out of shuttlecock and buckled it on his head, which looked amazing and powerful, showing the taste of vague civilization.

They looked like vassal tribes of the Fangs Kingdom.

At least, it is also within the strength of the Fang Kingdom, and the ferocious rat tribe that has been connected with the vassal tribes, has been affected, and awakened a certain degree of wisdom, is not a pure beast.

However, they were doing something that none of the soul shifters had ever thought of.

The rat race is clustered together, you push me, I squeeze you, and they are already close to the edge of the boulder.

Below, there is the turbulent water, and the black and dark downstream, hidden in the mist, like a deep and endless hell.

These fierce rats did not have the slightest fear—or rather, in their confused red eyes, they could not see the slightest emotion that intelligent beings should have, but they were driven by some mysterious force, crouched deeply, jumped into the dark river.

"Poof! Poof! Poof! ”

Countless ferocious rats fell into the dark river, splashed water, and subsided in an instant.

They were swept up in the turbulence and crashed into the rubble and broken steel bars on both banks, breaking their tendons and breaking bones in an instant, bleeding like a stream of blood and staining the nearby waters red.

There were even some fierce rats that were knocked into the stomach and rotted, and all the internal organs gushed out, and before they could leave everyone's sight, they became fragmented corpses.

But such a tragic picture can't stop the determination of those fierce rats behind them, one after another, into the dark river.

They twitched nervously, like they were treading the drums of a demon, and they were dancing madly, and even the head man with the crown or the priest jumped into the dark river.

In a short time, hundreds of fierce rats were all buried in the dark river, and not even half of the crimson splash was left.

Mass suicide!

This is a very rare phenomenon of mass suicide in nature!

"In nature, some social rodents, mainly rats, tend to commit mass suicide when the ecological environment changes dramatically, the population swells to the limit, and it is no longer possible to obtain enough resources to support all the races."

Director Mu said in a deep voice, "According to the analysis of zoologists, this is a kind of 'balance switch' deep in the genes of social rodents—in the case of the collapse of order and the lack of materials, if there is still a number beyond the limit, it will only make all the rats kill each other for a chance to survive, and the last one will not survive."

"Therefore, at such times, there will always be some rats who 'stand up' and commit collective suicide voluntarily or non-resourcefully, saving living space for the population in exchange for greater hope for the survivors."

"That is—"

Chu Ge thought for a moment and said, "The collective suicide of these ferocious rats shows that the underground ecosystem has been seriously damaged, and the rat civilization, which was originally stable, and the larger-scale rat society built around the rat civilization are collapsing?" Even the genes in the bodies of these mice have sensed the extreme lack of living resources and space, which is very likely to lead to the extinction of the entire race? ”

"I'm afraid so, and that's what we expected for a long time."

Director Mu observed the terrain and said, "Thunder, launch the rope dart over, let's go from the top of that boulder - since a large number of fierce rats have appeared from behind the boulder, it means that there must be a gap that leads directly to the core area of the rat civilization, and besides, hundreds of fierce rats can come over, and we will definitely be able to pass over." ”

The strong man named Lei Dong was also possessed by the strongest rat, and carried the most supplies and professional equipment, including a miniature rope dart.

"Whew!"

A three-legged claw shot out of the muzzle of the gun, pinning it firmly into the boulder like a dart, and the two hook claws dug deep into the crevices of the boulder.

Behind the flying claw, followed by a bundle of extremely thin and light wire ropes, Lei Dong tried it, and felt that the hook claw had been firmly fixed, so he wrapped the other end of the wire rope around a stalagmite here.

A tight wire bridge, just above the turbulent river that has just swallowed the lives of hundreds of fierce rats, is steadily taking shape.

Hei Yu was the first to jump up as light as a swallow, Chu Ge followed, then the Lin family sisters and brothers, the elite soldiers of the Seventh Division of the Special Investigation Bureau followed behind, and Director Mu stayed in the last sweeping formation, accompanied by the ghost crying wolf howl of the dark river rapids, they climbed over without danger and jumped onto the huge rock where the fierce rat had just stood.

Sure enough, on the rock wall behind the boulder, there were criss-crossing gaps, forming a group of black and swarthy human figures with teeth and claws.

Everyone was a little impetuous, as if they heard the soul-stirring sounds of fighting and screaming from the endless abyss behind the gap.

Chu Ge poured the shock energy into his eyes, and ran the "Brain Stimulation Technique" to the limit, and even saw wisps of colorful aura, like demon fire, gushing out from the cracks.