So, there were still scattered rogue Mechanical Servants active in the city, and the Central System needed to clean up all these out-of-control robots to prevent a resurgence.
Because of this, the defense force inside the base of the Central System was not very strong, as all the mechanical guards had been sent out.
Lu Heng and Chen Zihang checked the time and then split up to take action.
Building 3 was a low-rise building covering a relatively large area.
The three of them took advantage of the mechanical guards coming in and out of the basement of Building 3 and went in using Invisibility.
When they triggered the alarm at the first security check, they forcibly broke through.
The trio rushed into the basement, only to discover that it was an underground laboratory for researching mechanical life.
Upon seeing the research content, Lu Heng's face showed a surprised expression.
Because the project being researched in this laboratory was actually a combination of demons and machinery.
In the laboratory, a group of demons was undergoing mechanical limb transformations, among which was a Commander Level Horned Demon.
This Horned Demon Commander was injured, with broken horns and claws. He did not resist and voluntarily allowed the laboratory robots to use metal materials to repair his damaged horns.
Seeing humans enter, the Horned Demon Commander immediately let out an angry roar, charging with its incomplete body to attack.
Now facing a Commander Level Demon, Lu Heng no longer felt much pressure.
In addition, with Su Muyu and Lin Zeyu, the three easily managed to defeat this Horned Demon Commander and the other demons in the laboratory.
[Killed a Horned Demon Commander, absorbed 500 points of Demon Energy.]
[Killed a Scary Claw Demon, absorbed 200 points of Demon Energy.]
[Source Energy Level has risen to 24, All Attributes +3, Agility Attribute additionally +0.9]
After absorbing the Demon Energy, Lu Heng's level rose to 24.
Su Muyu and Lin Zeyu's levels also successively rose to 23, and their combat effectiveness was enhanced.
After realizing this was an underground laboratory, it was certain that the Central System's machine room was definitely located on floors 21, 22, and 23 of Building 1.
Moreover, having a Mechanical Demon Transformation Laboratory in this base indicated that the Central System's super AI had also surely been contaminated by the Abyss.
The corruption of the Abyss could not be avoided even by machinery, so mechanical civilization was unable to withstand the devouring of the Abyss.
However, compared to organic life, it was indeed slower for the Abyss to corrupt mechanical units.
After clearing the Mechanical Demon Laboratory, Lu Heng immediately rushed to Building 1.
In front of the 21st floor's main entrance in Building 1, a battle was taking place.
Chen Zihang had initially tried to enter the 21st floor through authorization but was blocked and had to breach forcefully.
As a result, he was now engaged in a gunfight with mechanical guards on the 21st floor.
The machine-gun fire from the mechanical guards forced Chen Zihang's team to stay down.
"We can't delay any longer, let's immediately rush in, or more mechanical guards will keep gathering," Chen Zihang signaled, commanding his team to breach.
Three Superpower Soldiers, originally military personnel, threw two grenades and then rushed out with a Light Energy Shield at the forefront, getting close to the mechanical guards before crazily sweeping them with an enhanced Flamethrower, melting six mechanical guards into molten iron.
After taking care of the mechanical guards at the entrance, the three rushed onto the 21st floor.
Mechanical guards within the base began to converge on Building 1.
Chen Zihang's communicator received a signal, and after connecting, he heard Lu Heng's voice.
"Have you made it inside?"
"We're breaching. How about you?"
"An underground laboratory for researching Mechanical Demons, I've already cleared it," Lu Heng answered.
"There weren't many guards in the underground laboratory."
"What's the situation outside now?"
"At least three hundred mechanical guards are converging on Building 1, you need to speed up," Lu Heng reminded.
"Cover for me. We've already finished searching the 21st floor, now heading to the 22nd," Chen Zihang said.
"Okay, I'll hold them off for you."
After saying this, Lu Heng cut off the communication and threw two grenades to destroy the elevators of Building 1, and blocked the stairwells with objects.
"Lin Zeyu, go invisible, we'll use the reconnaissance drone to fly up to the 21st floor," Lu Heng said, wrapping his arm around Su Muyu's waist and grabbing the reconnaissance drone's claws to begin ascending.
"What about me?" Lin Zeyu quickly asked.
"You stay outside to back us up, contact us via communicator if anything happens," Lu Heng arranged for him to stay outside as support.
Snipers often need to act alone.
Plus, with mechanical guards all converging on Building 1, it was actually safer to lie in ambush atop other buildings.
Lin Zeyu turned and walked towards Building 2, looking for a sniping position.
During the flight, the reconnaissance drone encountered the interception of armed drones.
Su Muyu quickly took down a drone with her Crossbow, but for every one she took down, a dozen more would surround them.
The Energy Weapons on the armed drones "zzzzz" fired High Energy Beams in unison.
Su Muyu released the [Prism Tower Shield] to block the High Energy Beams, then swiftly flew into the 21st floor.
Once inside the building, Lu Heng pulled her to quickly run through the corridor while the reconnaissance drone took the rear, taking down all the pursuing drones.
They traversed the 21st floor's corridor, tracking Chen Zihang's team's footprints and reached the 22nd floor.
There was an alloy door on the 22nd floor.
This alloy door had the highest security level in the entire base, indicating that something very important was behind it.
In front of the alloy door, there were also twenty-five High Energy Ray Guns, ready to attack anyone showing their head with High Energy Beams.