This was no ordinary sewage treatment pool.
It was a special piece of equipment resembling a Reaction Kettle.
The outer walls of every metal tank were thicker than the Reactive Armor of a Main Battle Tank.
During operation, huge quantities of chemicals and Gene Serum had to be injected into them to barely neutralize and dilute experimental residue, monster excrement, and all manner of discarded materials to the point where they would neither cause severe environmental damage nor leave behind the slightest trace.
Judging from the valves atop several metal tanks, which were squeaking as they emitted scorching crimson steam,
Meng Chao found it hard to imagine what kind of dangerous substances they were processing to require such painstaking caution, as though facing a formidable enemy.
And even after repeated treatment through more than a dozen procedures, the sewage ultimately discharged into the Underground River still contained a large amount of Blood Pattern Flower Spores, along with highly radioactive and heavy-metal substances.
"Damn it, were these brazen bastards hiding here and injecting Blood Pattern Flower Spores into the veins of Doomsday Beasts?"
Meng Chao muttered to himself.
Besides that, he also discovered scorch marks, tears, and signs of repairs on several metal tanks.
The bases of several tanks also appeared to have been installed only recently.
All signs indicated that a small-scale explosion had once occurred here.
Everywhere bore traces of the blast waves roaring through from the explosion.
After pondering for a moment, Meng Chao concluded that the recent small-scale earthquake had caused a serious malfunction in the sewage treatment system. The fault had accumulated to the Critical Point and triggered an explosion, causing massive amounts of sewage to flow along the Underground River and reach the surface.
"Strange. Judging from the style of the mastermind behind 'Horizon,' he