All-out: Starting with the Awakening Special Operations Unit, search, attack, and withdrawal.

"boom!"

"boom--!"

One explosion after another, along with the boss's faint screams of fear, came from the west side of the main hospital building.

Every sound that reached the [Beast Research Laboratory] and the [Underground Dissection Center] sent a shiver down the spines of the two pioneer teams.

"They're still alive? That squad from the North Gate is still fighting... Could it be that the teleportation tower at Huangshan Base City has been completed? Or has a squad from the Central District arrived?"

"Hiss, there seem to be fewer and fewer zombies over there..."

【Alien Beast Research Laboratory】.

If the first team of the [Beast Research Laboratory] was secretly scoffing at the team at the North Gate when they saw that both bosses had been drawn away.

"After working so hard all day, didn't we just benefit from the core area?"

however.

As the battle dragged on for longer and longer.

3 minutes, 5 minutes, 10 minutes...

The sounds of battle from the main hospital building showed no sign of abating, and even the chilling howls and roars of the horde of corpses seemed to be subtly suppressed.

It's like... the zombie horde was wiped out by the enemy!

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The moment the idea came to mind, the rest of the team shook their heads.

How is that possible?

however.

A sharp, mournful wolf howl, accompanied by a clear, explosive gunshot, suddenly rang out from the direction of the main hospital building.

Finally, someone in the group could no longer contain their nervousness and curiosity.

A team member ran up to the roof, took out a drone from his backpack, and remotely controlled it to take off.

As the drone flew over the [Sanatorium and Rehabilitation Center] and then over the [Main Hospital Building], the dimly lit scene revealed the open space to the west of the [Main Hospital Building]. At that moment, several people ran up to the rooftop and saw the live feed on the remote control screen.

They all gasped in shock.

It was a "hill" made up of zombie corpses of varying sizes, with one pile of corpses after another piled together in a grotesque manner, and the ground was completely covered with ferocious, grayish-white zombie heads.

"vomit!"

Such a provocative scene caused one of the team members, who had a lower tolerance for pain, to gag on the spot.

He lay down to the side and vomited violently.

As the drone footage zoomed in and out, a massive, scarlet monster corpse, with a large number of zombie corpses crushing beneath it, came into view.

"That's... the boss, the Overlord!"

The group's pupils constricted sharply as they saw the boss's dense tentacles, which could harden, shoot out as bone spikes, and merge into two fleshy wings, allowing the boss to glide through the air.

It was completely bare at that moment.

A slash mark that started from the top of the skull and ran down the spine for more than a meter.

It was almost as if they were about to split the boss in two.

Scattered all around are hard bone spikes, clearly shot out by the boss, or soft tentacles, as if forcibly cut off with a knife tip.

"Where are they? I haven't seen that squad." The captain's expression was uncertain.

And just as he finished speaking...

Another sharp, mournful wolf howl rang out, prompting the drone operator to quickly look in the direction from which the sound came.

Then, everyone saw the scene that would be unforgettable for them.

It was the wreckage of a special operations armored vehicle with an equipment box inside.

At this moment, on top of the huge special operations armored vehicle, boss Fenrir's ferocious maw drooped limply, the jawbone appearing as if it had been violently severed.

Also severed were the opponent's forelimbs, which were covered in sharp wolf claws.

A figure covered in blood and various viscous fluids was standing on the boss Fenrir's head, holding a purplish-red hand axe that looked eerily sinister in the dark environment.

The latter raised the hand axe again.

"Pfft!"

With a single swing of the axe.

At that moment, the team member controlling the drone trembled involuntarily, his face turning pale with horror.

"Is this...is this even human? How come he's all alone...?"

Everyone stared in disbelief at the figure standing atop the boss's corpse in the video.

The original horde of thousands of zombies was reduced to a mere hundred by this one person, and even those remaining were not all intact.

Looking at the screen, you can see the figure who just defeated the boss Fenrir.

Suddenly, two golden apples appeared in his hands, one on his left and one on his right. He then moved towards the zombies that were gathering in his direction, having barely managed to crawl past the corpses of his "companions."

"boom--!"

"boom--!"

Two familiar explosions rang out, unleashing a violent surge of energy.

Two explosions erupted atop the pile of corpses, sending up a massive cloud of blood and mangled limbs, making the team members' stomachs churn.

The drone pilot's face was completely drained of color.

"Is this a human? How could someone single-handedly cut down an entire horde of zombies... that must be exhausting!"

And just as the pilot was muttering to himself at that moment.

Chu Hong truly felt like he was about to die from exhaustion.

The painkillers had long since worn off; in fact, due to the intense exertion and maintenance of his superpower, [Slaughter Overlord], every pore on Chu Hong's body was now radiating excruciating pain.

When the last two [Golden Apples] killed the zombies, they gathered several clusters of life energy and flowed into Chu Hong's body.

Chu Hong's face turned pale instantly.

"hiss!!!"

The life energy that should have nourished the body under heavy strain, like a spring of water in the desert, instead caused Chu Hong excruciating pain as if he were being tortured by concentrated sulfuric acid the moment it entered his body.

The intense pain caused Chu Hong's body to convulse.

And then Chu Hong killed the last zombie in the vicinity.

The superpower [Slaughter Overlord] has finally entered its true countdown.

10 second, 8 seconds, 6 seconds...

As the countdown ended, Chu Hong's aura, which was at the ninth level of the Energy Gathering Realm, suddenly began to plummet.

Energy Gathering Realm, Stage 8! Stage 7... Stage 3! Stage 2!

however.

When the aura drops to the second stage of the Energy Gathering Realm, it should continue to drop back to the first stage of the Energy Gathering Realm, and then drop back to the original source energy fluctuations of the ninth stage of the Origin Realm.

Miraculously, the decline stopped instantly.

The body, nearly exhausted, began to slowly and naturally draw energy from the air surrounding the secret realm.

Chu Hong slumped onto the head of boss Fenrir's corpse.

But a hint of joy flashed in his eyes at that moment.

Breakthrough!

Like a madman, he pushed himself to the limit in a continuous battle against thousands of zombies, finally achieving what the old city lord Jiang Xingdong had predicted.

Promotion successful!

And right from the start, it's the second stage of the Energy Gathering Realm!