Fang Cheng sat by the fire, not getting up to pursue.

His gaze penetrated the flickering flames, calmly looking in the direction where that human figure had vanished.

Judging by the silhouette and voice, the other person seemed to be just a child.

Moreover, at the moment the figure darted into darkness, Fang Cheng’s keen vision captured a strange phenomenon.

The surface of the clothes on the other person seemed to ripple with a distorted luster like waves.

Immediately following, that living silhouette completely merged with the contours of the surrounding ruins, vanishing into thin air. 𝚏𝕣𝕖𝚎𝚠𝚎𝚋𝚗𝐨𝐯𝕖𝕝.𝕔𝐨𝕞

"Optical camouflage? Or some kind of biological mutant invisibility?"

A hint of speculation flashed through Fang Cheng’s mind.

He tossed the leftover monster leg bone into the fire, scattering a burst of sparks.

Then he lifted his right foot and stomped out the newly kindled campfire.

The surroundings instantly plunged into darkness.

Fang Cheng closed his eyes, no longer relying on limited vision, instead enhancing his auditory and olfactory perception to the utmost.

Under gravity twice that of Earth, no entity’s movement could achieve true "stepping without a trace."

Fierce winds whistled between the ruins, emitting a mournful wail, bringing different scents.

Fang Cheng’s ears twitched slightly, filtering out the wind sound, the rolling of tiny stones.

Two seconds later, he locked onto a faint but rhythmic "creaking" sound two hundred meters ahead.

It was the sound of shoe soles compressing volcanic ash on the ground, unable to bear the weight, creating a subtle noise.

Although the other tried hard to lighten their footsteps, to Fang Cheng, it was like beating a drum beside his ear.

He abruptly opened his eyes, a faint golden glow swirling in the depths of his pupils.

Then he completely restrained his own raging vital energy, forcibly lowering his heartbeat to less than ten times per minute.

The entire person became like a ghostly Black Panther merging into the night’s embrace, leg muscles tensed, then swiftly exerted force.

Swish!

Without creating any unnecessary wind noise, Fang Cheng’s body directly shot upwards, lightly leaping onto a tilted concrete broken wall.

He silently leaped and shuttled between the skeletal remains of buildings.

Like a ghost blending into the night, he precisely controlled the force of each landing.

He kept a safe distance of about a hundred meters from the invisible figure creating faint sounds, quietly following.

The tracking lasted about a few minutes.

The deeper into the city’s ruins, the taller and denser the surrounding remnants became.

Thick volcanic ash was like a layer of black frost and snow that never washed away, covering every twisted rebar and dilapidated wall.

The air temperature had already dropped below freezing.

The pungent smell of sulfur began to mix with a feral stench from fermented sewer.

Urgent footsteps kept echoing from ahead.

The invisible child was clearly familiar with the terrain here.

He would occasionally stop to glance back or decisively change his route.

Fang Cheng’s gaze swept below, immediately understanding the reason.

In the shadows of the surrounding ruins, numerous demon-like mutant beasts lurked.

The child relied on an instinctive sense of danger, carefully threading through the crevices.

He quietly avoided those nests emitting a dangerous aura, without alarming a single monster.

Eventually.

The footsteps stopped before a large collapsed pit resembling an old subway entrance.

Fang Cheng used both hands and feet, adhered silently to a thick load-bearing column over ten meters high like a gecko, overlooking the deep pit.\p>

Below, three blurry figures were crouching behind a pile of rusty ticket machine remains.

A weakly glowing green cold light tube was thrown on the ground, barely illuminating a few square meters of the area.

Accompanied by a water ripple-like air distortion, the invisible child withdrew his disguise, appearing at the green light’s edge.

He gasped violently, his chest rising and falling like a broken bellows.

By the faint cold light, Fang Cheng discerned their attire, a trace of surprise flashing in his heart.

These four people were all dressed in extremely bulky jumpsuits.

The fabric seemed forcibly stitched from mutant beast hide and industrial canvas, coated with black oil to resist radiation.

They also wore heavy sheepskin gloves and donned gas masks with thick filter canisters on their heads.\p>

Goggles’ glass was covered in scratches and dust, vaguely showing the eyes behind.\p>

This was clearly an original, rough survival suit custom-tailored for a wasteland environment.\p>

Fang Cheng carefully observed the other three adult-sized figures.\p>

Among them, two were of larger build, holding weapons.\p>

These were not high-tech beam guns but crude firearms cobbled together from steel pipes, springs, and rough bolts.\p>

The other slightly slender figure, judging by stance likely female, held an inverted sharp solid rebar.\p>

"Hoo... hoo..."\p>

A muffled heavy breath within the gas mask drifted into Fang Cheng’s ears with the night wind.\p>

The child seemed scared, or perhaps had run too hard.\p>

He bent forward, propping his knees with both hands gasping desperately, mumbling incoherently.\p>

At the green light’s edge, the "All-Knowing Language" talent activated instantly.\p>

Those originally static mute noises like scrambled codes transformed into clear logical dialogue after brief brain translation.\p>