In his sight, as each Zombie was drained, the Cleaners would lose a red thread.
The fused Cleaners were doing better; as they grew larger, their red threads also multiplied several times over.
Those Cleaners in their initial state weren't as resilient.
Once all their threads disappeared, they would spontaneously combust in mid-air, then explode into the Zombie Horde like cannonballs.
The exploding blue and white flames were different from normal flames.
They were somewhat similar to the effect of Bio-acid.
Just a touch would spread throughout the entire body.
Fortunately, the flames had a time limit; the flames from a normal Cleaner's self-destruction only lasted for about 10 seconds.
After 10 seconds passed, no matter how burned the ignited Zombies were, it would immediately stop.
It truly was a purification of everything!
Under the offensive of the Cleaners, the Zombie Horde quickly retreated.
Occasionally, Corpse Balls formed by Stitchers would attempt to break through the formation, but Zhao Feng decisively opened fire and took them down.
Following the army of Cleaners into the gate's tunnel.
It seemed to have scanned the entry of a B-class authorized personnel, and the fluorescent lights overhead lit up one by one, illuminating this extremely long tunnel that slowly descended.
As the lights turned on, the passage was still packed with Zombies; normal Zombies were one thing.
Mutants, however, were endless.
For instance, he had seen Worm Zombies and Hunters before, and there were quite a few of them.
And after entering the passage, the acidic liquid sprayed from the front never stopped.
However, when facing Cleaners with their biological fields, this acidic liquid was futile.
In fact, due to the indiscriminate attack of the acidic liquid, it helped Zhao Feng speed up his advance.
Hunters couldn't make waves in front of the Cleaners.
After all, no matter how fast you are, can you be faster than those dense, spiderweb-like crimson threads? If you dare to charge forward, you're just offering yourself up.
Zhao Feng, following behind, was quite leisurely at this moment~
He basically didn't need to participate in combat of this intensity.
To conserve his Mental Power, he hadn't even activated his support functions from the beginning.
Apart from Stitchers causing some trouble, the attacks from other mutants were like child's play in front of the organized units of Cleaners.
Of course, although "Zombie Balls" were troublesome, their massive size meant that visual estimation alone was enough to deal with them.
As they continued to advance downwards, thousands upon thousands of Zombies died every moment.
Some were reduced to dried husks, their bones and marrow extracted.
Others were burned to ashes by the blue and white flames.
Soon, he followed the Cleaners to the end of the passage.
At the end of the passage, there was another gate, but this one was already open.
Staring at the pitch-black environment beyond the gate, Zhao Feng raised his hand, allowing the spotlight on his Rocket Gauntlets to illuminate further.
After shining it for a long time, he still couldn't see the end of this space.
He could only confirm that outside the passage was an extremely vast area.
Countless Cleaners behind him were still madly pouring into it.
After scanning the surroundings, he didn't dare to act rashly.
Zhao Feng clearly understood that he was the only Living Person in this underground world.
The scent of his fresh Flesh and Blood would surely attract all the Zombies like a candle in the dark.
Just as the prompt indicated, only under the Protection of numerous Cleaners could he safely explore this area.
Fortunately, the speed at which Cleaners poured in from the passage behind him had not slowed, and they were still coming continuously, which reassured him greatly.
Once upon a time, these things had scared him so much he almost wet his pants.
Now, to be "protected" by them in the center, life truly was unpredictable.
For a moment, Zhao Feng's gaze towards the Cleaners...
still held a bit of fear.
Nothing else; a spine connected to a head, with threads emitting red light. Seeing such a thing at night was too damn creepy.
Standing at the entrance, Zhao Feng hesitated for a long time. Suddenly, he remembered that when he entered earlier, there was a console to the right of the gate.
Perhaps it was the same here; he raised his hand and shone it to the right.
Indeed, he found something similar.
He walked over and skillfully inserted the B-class researcher permission card.
A 3D Projection reappeared. According to the translated text on it, he selected low-power lighting.
There was no other choice; the remaining Energy was too low. He wanted to select other options, but they all indicated insufficient Energy to activate.
After making the selection, a muffled sound of circuit breakers merging seemed to come from overhead.
"Clang, clang, clang..."
Accompanied by the receding sound of the breakers, starting from the gate, circles of lights gradually lit up.
The city's sky screen, reactivated after many years, clearly illuminated the surrounding scenery.
Standing at the console, Zhao Feng couldn't help but turn his head to look at the underground city that had been relit.
The underground city before him, slowly unfolding its true form like a cinematic curtain, made him gasp in awe.
This was a super-large underground city.
The crystallization of the Dalerossian's wisdom and Strength.
As the lights gradually illuminated, the visible area of the city continuously expanded.
The structure displayed by the sky screen overhead was not a simple hemispherical shape.
Instead, it was composed of multiple hemispheres pieced together, suggesting that the area of this underground city would be unimaginably vast.
His current position was slightly above the city's building clusters.
Entering from here only required walking down a gently sloping ramp.
The length was approximately... he couldn't see.
Yes, he couldn't see.
Under the light, everything Zhao Feng could see was filled with Zombies.
From his position all the way to the distant city buildings, this semicircular Plaza, over 500 meters wide, was filled with Zombies.
If compared horizontally, this area was not much different from Tiananmen Square on Earth.
Keep in mind that Tiananmen Square's floor area of 880 meters by 550 meters could accommodate 1 million people.
Here, because it was all Zombies with no intelligence and no concept of safe distance, the density of Personnel would be even more terrifying.
The density of Zombies per square meter could exceed 20.
Calculating this, the entire Plaza contained at least over 7 million Zombies.
It could be called a Zombie Tide.
Compared to this place, the Zombies encountered before were nothing.
Looking down, 30 meters away, the Zombie Tide, like a sea wave, continuously impacted the Defense Line formed by the Cleaners.
Earlier, Zhao Feng thought the Cleaners were numerous and powerful.
Now, looking at it, it was just so-so.
Suppressed by the Zombie Tide, they couldn't even fly. Any Cleaner that dared to charge into the Zombie Tide would be dragged to the ground by dozens of Zombies the next second.
Once dragged in, facing so many Zombies, if the Cleaner counterattacked, they would be instantly torn apart for being unable to generate a biological field.
If they erected a biological field, it would be waiting for death!
However, given the personality of the Cleaners, they wouldn't back down from Zombies, not even fearing a mutual destruction.
At this point, even though the number of Cleaners was still increasing, compared to the vast number of Zombies in the tide, it was completely a drop in the ocean.
They could barely maintain the current situation.
..
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