High-level martial arts: Starting with a heart of steel, stats crush everything.

Even if those fourth-level martial artists couldn't kill him, the eighteen grandmasters in Black Cloud City were no pushovers either.

One slap could knock out your own relics...

"call..."

Chen Mo adjusted his breathing, stepped onto the Cloud Step, and began to slowly rise.

After becoming a level six martial artist and activating the invisibility effect of the Demon Phantom, Chen Mo discovered that this invisibility effect was not just about invisibility.

His presence, his voice, the life force he exuded—all of this vanished under the shadow of the demonic phantom.

How to put it? He's like a wisp of air moving around; as long as you don't get within five meters of Chen Mo, you'll never be detected.

A few minutes later, Chen Mo successfully landed in a small corner of the city.

It wasn't that he didn't want to take the main path, but rather that there were too many people on the main path, and they were all second or third-level abyss warriors.

Judging from their appearance, they seemed to be gathering in one place, but I wondered what they were going to do.

"Never mind that, let's get down to business first."

Chen Mo shook his head and began searching for the underground mine in Black Cloud City mentioned in the information.

It's no secret that there's a large energy stone mine beneath Black Cloud City; anyone who's ever been to the Abyss Warrior City knows this.

After all, their city's energy core requires a large supply of energy stones, and building on an energy stone mine is the best option.

"Does it feel like something from the 80s or 90s?"

Wandering through the alleyways, Chen Mo looked at the surrounding furnishings and muttered to himself.

The tenement buildings stood side by side, their interiors dimly lit.

The closer you get to the center, the taller the buildings become. Black Cloud City felt just like Earth in the 1990s to Chen Mo.

The residents here don't wear the ancient attire Chen Mo imagined, but rather a type of clothing with a strong Abyss character.

"Could it be that the abyssal rift really connects to another world?"

Although Chen Mo was curious, he did not stop walking.

Gradually, Chen Mo moved away from the hustle and bustle of the outer city, and the surrounding environment gradually quieted down.

Compared to the level two or three martial artists in the outer cities who, though not physically imposing, were still healthy, the martial artists in the inner city were far more powerful.

The most common are level four and level five martial artists, and there are quite a few level six and seven martial artists as well, but level four martial artists are extremely rare.

Of course, this is only in comparison to the number of fourth-level martial artists. In the human world, this number of fourth-level martial artists could form an extremely powerful army.

"It should be around here..."

Sensing the increasingly dense energy particles around him, Chen Mo could tell that there must be an entrance to a mine nearby.

Guided by the energy particles, Chen Mo stood in front of a building that looked very high-tech.

"That can't be right, who would put their mine in such a high-end building?"

Chen Mo looked up and down at the thirty-story building in front of him, a hint of doubt flashing in his eyes.

"Never mind, let's go in and take a look."

Shaking his head, Chen Mo carefully avoided the crowds and entered the technologically advanced building.

The alarm at the door went off the moment Chen Mo passed by, but the guards searched around and couldn't find the cause of the alarm, so they simply concluded that the alarm was malfunctioning.

"fine."

Chen Mo breathed a sigh of relief. It seemed that although the naked eye could not detect him, some instruments could still detect his presence.

"The old version of True Sight Ward?"

For some reason, this idea suddenly popped into Chen Mo's mind.

"If I place a Control Ward somewhere and unlock Teleport, can I appear anywhere at any time?"

"What are you thinking about? Let's get down to business."

Banishing the jumbled, strange thoughts from his mind, Chen Mo followed the increasingly dense energy particles.

As the energy particles became increasingly concentrated, Chen Mo finally stopped in front of an iron door on the tenth underground floor.

"Is the mine right behind the door?"

Looking around, he had a feeling that the place he had found might not be a mine.

But since he was already there, Chen Mo decided to go in and take a look.

Anyway, he has the invisibility effect of the Demon Phantom, so as long as no enemy appears within five meters, he will definitely not be...

"Caligula..."

Chen Mo turned around abruptly and found a woman in uniform standing behind him, looking at him with a terrified expression.

Moreover, they stepped into the five-meter range.

"Damn, I was careless!"

Chen Mo, like a beast suddenly unleashed, grabbed the woman by the neck.

"A level three martial artist, no wonder I didn't notice..."

The woman gripped Chen Mo's wrists tightly with both hands, her eyes threatening to pop out of their sockets under the heavy pressure of Chen Mo's large hands.

After a while, the woman's body in Chen Mo's hands gradually went limp, and her breathing completely stopped.

"If it weren't for the difficulty in disposing of the body, we wouldn't have wasted so much time."

Chen Mo finally breathed a sigh of relief after hiding the lifeless woman inside the ventilation duct.

This building was clearly hiding something. When Chen Mo entered, he saw at least five or six level-ten martial artists in uniform patrolling.

Even a fool could guess that there's something far more powerful inside this building.

There might even be a grandmaster guarding it.

"Wait, what's that woman doing here? Does she have the key to this iron gate?"

Chen Mo, who was about to hide and wait for another opportunity, was stunned for a moment. He had been startled by the woman earlier and had forgotten about the incident.

Slapping his forehead, Chen Mo climbed onto the ventilation duct and began groping the woman's body.

Sure enough, the woman only had a name tag and an ID card on her, which seemed to correspond to the identification device on the gate.

"Hopefully, this won't trigger an alarm."

After removing his badge and ID card, Chen Mo placed the ID card on the identification device.

With a beep, the door slowly opened, revealing the true face behind it.

A huge, boiler-like mechanical structure was constantly roaring as workers nearby were continuously filling it with high-purity, purplish-black energy stones.

After being converted by the boiler, the energy stones turned into a purplish-red liquid that flowed out and eventually gathered in a pool not far away.

"Holy crap..."

Chen Mo never expected that although he hadn't found the underground mine, it seemed, perhaps, he might have found the energy core of Black Cloud City...

The workers took the purplish-red energy liquid out of the pool and poured it into a battery-like device next to them.

"This thing... seems even purer than an ultra-pure energy stone?"