This is no ordinary sewage treatment tank.

It is a special equipment similar to a reactor.

The outer wall thickness of each metal can exceeds the reactive armor of a main battle tank.

During operation, a large amount of chemicals and genetic agents must be injected into it to neutralize and dilute the experimental residues, monster feces and various waste materials to the extent that they will not cause serious damage to the environment and will not leave any clues.

.

Judging from the fact that the valves above several metal tanks were "squeaking" and emitting scarlet hot steam.

It was hard for Meng Chao to imagine what kind of dangerous materials they were dealing with, and why they needed to be so cautious, as if they were facing a formidable enemy.

And even after repeated treatment in more than a dozen processes, the sewage finally discharged into the underground river still retains a large number of blood-stained flower spores, strong radiation, and heavy metal substances.

"Damn it, are these bold bastards hiding here and injecting blood-striped flower spores into the veins of the doomsday beasts?"

Meng Chao murmured to himself.

In addition, he found signs of burns, tears and repairs on several metal cans.

The bases of several metal cans also seemed to have been installed recently.

All signs indicate that a small-scale explosion occurred here.

There are traces of the shock waves and howling waves produced by the explosion everywhere.

After pondering for a moment, Meng Chao felt that it was the small-scale earthquake not long ago that caused a serious failure in the sewage treatment system. The failure accumulated to a critical value and triggered an explosion, which caused a large amount of sewage to flow along the underground river to the surface.

above.

"It's strange. Judging from the behavior of the operator behind Horizon, he should be a very cautious person.

"If the sewage treatment system is damaged like this, it is possible for a large amount of 'evidence' to leak out of the situation under one's control. According to the behavior of the manipulator behind the scenes, the experiment should be stopped immediately, wait for the sewage treatment system to be completely repaired, and find out the underground

The underground river has a new tributary situation after the earthquake, and construction is slowly starting.

"Why, the other party knew that there was a risk of exposure.

"We still have to carry out high-intensity experiments day and night, and discharge so much sewage that the "tailless monkeys" and others discover the flaws?

"That's only one possibility.

"The other party can't wait any longer.

"He must produce the experimental results in the shortest possible time - blood-striped flower spores that can be used in actual combat and serve as biochemical weapons!"

Meng Chao's forehead was covered with fine beads of sweat.

I wish I could get into the reactor now, follow the pipes, and climb all the way to the Blood-striped Flower Laboratory hidden behind the sewage treatment system and deep in the layers of rocks.

But this is impossible.

Because the inside and outside of the sewage treatment system, as well as the top and bottom, were filled with burly men with loaded guns.

Their bodies are strong and strong, like brown bears standing upright.

His eyes were sharp, like a hungry tiger or wolf.

It is silent when patrolling. Even wearing combat boots with embedded steel plates, it still walks as light and stealthy as a cheetah.

This sewage treatment station is buried nearly 100 meters underground, and even a mosquito cannot fly in.

During the year and a half they have been on duty here, there must have been no intruders who would have sneaked in from the underground river filled with super strong radiation, heavy pollution, and inhabited by deformed monsters.

But the gaze they cast on every corner of the cave was still as cautious and sharp as when they were on duty for the first time, and they did not feel bored at all.

Meng Chao felt several times that the gazes of these guards were like polished sickles, passing over the tip of his nose.

If he hadn't broken through to the divine realm and had practiced the "Walking Corpse Art" specifically for concealment, Meng Chao felt that he might have been noticed by them.

These guards are all masters.

They have definitely killed people, seen blood, and seen their organs being taken out from between the chest and abdomen by monsters, but they can take the organs back without changing their expressions, stuff them back, and then cover their stomachs to kill the monster.

experience.

It's definitely two different things than a security guard whose parameters on paper are considered unsatisfactory.

Meng Chao scanned a total of eighteen guards.

Their patrol routes intersect and overlap with each other to ensure that each guard is within the sight of at least three companions at the same time.

No, not eighteen.

The last guard was very cunning and was hidden in a specially dug hole above the cave wall.

The diameter of the hole is less than one meter.

Surrounded by rock walls that are as smooth as mirrors and vertical to the ground, there are no footholds at all.

The entrance to the hole was sealed tightly with a whole piece of armor plate specially designed for anti-aircraft guns, leaving only small holes for observation and shooting exposed.

This is a sniper above the level.

Through the observation hole, every move of the other seventeen guards could be seen clearly.

Even if there is an intruder, he can sneak up behind each guard like a ghost and cut the throats of all the guards before they are alerted.

This scene will also appear clearly in the sniper's scope.

Moreover, Meng Chao had no doubt that there must be something weird about his hiding place. It was connected to some kind of alarm system, and it could even monitor changes in physiological parameters to determine whether an alarm needed to be issued automatically.

After all, snipers are extremely calm guys who can accurately control physiological parameters under most circumstances.

If his breathing, heartbeat, blood pressure, and even the oxygen content in his blood drastically change due to Meng Chao's attack, the alarm will sound throughout the Blood Striped Flower Laboratory.

That was the scene Meng Chao didn't want to see the most.

No, it's not just these well-trained guards.

Meng Chao also discovered dense monitoring probes, detectors and information collectors around the cave, including inside and outside the sewage treatment system.

The density of these monitoring facilities is like a minefield where mines have been sown dozens of times.

There is a saying that this is not necessarily used to prevent intruders.

It mainly monitors the sewage purification situation, geological changes around the purification system, and prevents damage from mutant organisms.

Although the vast majority of mutated creatures have relatively developed intelligence, they dare not offend this dragon pool and tiger den hidden underground.

However, under the preparation and stimulation of the blood-striped flower spores, there are always some audacious aliens who fly into the flames and seek their own death.

Now, these information collectors have become an insurmountable iron wall in front of Meng Chao.

When Meng Chao closed his eyes and overlaid the patrol routes of each guard he had just scanned, as well as the monitoring ranges of each heat source monitoring probe and information collector, he suddenly found that his field of vision was surrounded by densely populated areas.
Chapter completed!