As countless Resentful Ghosts and Fierce Ghosts were refined by Zheng Yi, the Land of Fierce Ghosts that roamed here was destroyed, and the chilling aura dissipated.
Sunlight shone in, without the Yin Qi and Ghost Qi, the place naturally became warm.
Turning back, Zheng Yi strode out, eyes determined, with a faint smile at the corner of his mouth.
...
On the journey, Zheng Yi encountered batch after batch of zombies.
These corpse-like monsters retained a basic human shape.
Pale skin, vacant eyeballs, filled with bloodshot, and various wounds on their bodies, lacking human intelligence, only a shell left, and a crazed hunger for living things.
When Zheng Yi appeared on the street, attracted by the Yang Qi of a living person, hordes of zombies went mad, surging like a tide.
Zheng Yi showed no mercy, using his inner Spiritual Power to wield the Fine Steel Longsword, transforming into cold Sword Qi that soared to the sky, directly executing all encountered zombies without pardon, slicing through their flesh from head to crotch.
This was also what Zheng Yi discovered later.
These zombies were not really creatures anymore, just corpse-like entities controlled by viral genes.
Their fatal weakness lay atop their heads; more precisely, what moved the zombie shell was the Zombie Crystal Core in their brains.
By splitting open or directly destroying the Zombie Crystal Core, the zombies would be completely dead.
During this, a few Resentful Spirits attacked Zheng Yi, and he swung the Soul-Catching Banner, containing them inside, where Fierce Ghosts tore them into Spirit Body Fragments.
Along the way, Zheng Yi killed many zombies, harvesting over a hundred Zombie Crystal Cores.
"What can these Zombie Crystal Cores be used for?!"
Walking down the road, casually tossing colorful Crystal Cores.
After slaying all the zombies, Zheng Yi did not waste the Zombie Crystal Cores from their brains, collecting and putting them in a pouch strapped to his waist.
Leaving the school, aside from broken building clusters, all he saw were these zombies devouring each other.
These bloodthirsty zombies, upon seeing Zheng Yi, roared and charged with a frenzy, eyes filled with craving for flesh.
Feeling obliged, Zheng Yi had to release each from its torment, resulting in another large harvest of Zombie Crystal Cores, numbering nearly two hundred now.
Although Zheng Yi learned from a local of this world how to absorb the Crystal Core.
Which was to eat it directly, and if one could withstand the zombie core's erosion, they could awaken a Superpower.
Zheng Yi considered trying it, but remembering these were extracted from zombie brains, and not being a Superpower User, he hesitated about unknown side effects, afraid he wouldn't have a place to cry if there were any.
Better to safely practice cultivation!
This Doomsday World had many resources needed for his cultivation, no need to risk for little profit.
As for discarding the Zombie Crystal Cores, Zheng Yi felt reluctant.
After all, without exception, these colorful cores contained a special Life Energy.
If the method to utilize them is discovered, waste not to discard such resources casually.
The only way is to collect these Zombie Crystal Cores, waiting for future insights.
Along the journey, stopping and walking, battling zombies and refining Resentful Spirits, Zheng Yi was caught in heavy rain.
To avoid getting drenched, Zheng Yi chose the entrance to an underground garage, entering a building.
This Doomsday World, nearly destroyed by disaster, left only ruins and debris.
Buildings like the underground garage entrance that Zheng Yi chose were encountered frequently.
However, as soon as Zheng Yi stepped into the entrance and turned, he felt a sharp chill rush toward him.
The almost tangible Yin Qi seemed to freeze the air, sending a piercing cold from his feet, prompting a shiver.
"Bad, there's a ghost?"
Instantly, Zheng Yi swung the Soul-Catching Banner, the half-transformed Cyan Profound Fiend flowed around, activating the Soul-Catching Banner, enveloping his body in a black mist.
After all this, the first thing Zheng Yi had to do wasn't fight the opponent.
But after desperately retaliating, immediately fled outward.
Yet before Zheng Yi could reach safety, a sharp cry pierced his head like a steel needle.
A fierce pain spread from nerves, unbearable, causing his foot to slip, almost tumbling to the ground.
At this moment, three ghastly old ghosts roared, surrounding Zheng Yi.
Startled, Zheng Yi remained calm, swinging the Soul-Catching Banner to maximize the half-evolved Cyan Profound Fiend.
Numerous Fierce Ghosts refined inside the Soul-Catching Banner were called forth, surrounding him, protecting him.
Hayl!
Hayl...
The nerve-piercing screeching ghost howls were relentless, only then could Zheng Yi see the attacking three old ghosts' form.
Skin iron blue, clothes tattered, fingers turned into sharp claws, two bloodthirsty fangs extended.
Lean body but immense power, a single strike sent a Fierce Ghost from the Soul-Catching Banner flying.
And the movements were extremely fast, like lightning, almost leaving no chance for the gathered Fierce Ghosts to form a surround.
"Face blue with fangs, shriveled form, immense strength, fast as the wind!"
"Is this the Hundred-Year-Old Cyan Ghost?!"
With extensive knowledge, Zheng Yi instantly identified the three attacking evil ghosts, his heart sinking.
The term "hundred-year" didn't mean these old ghosts lived for a hundred years, but referred to their Dao Practice reaching a century.
Cultivators need the Sun and Moon Essence Qi and Heaven and Earth Spiritual Qi to cultivate, whereas Fierce Ghosts and Resentful Spirits train by nourishing on Profound Yin Qi and mainly through mutual devouring.
Like in Gu Cultivation, in a large space, all Fierce Ghosts devour each other, eventually birthing a few Fierce Ghosts with much deeper Dao Practice than typical Resentful Spirits.
These three blue-faced old ghosts, were merely ordinary Ghosts, far inferior in grade to the Red-clothed Female Ghost, the Main Soul of the Soul-Catching Banner.
Yet, these evil ghosts have deep Dao Practice, far surpassing Red-clothed Fierce Ghost, having devoured countless Resentful Spirit Bodies to reach such a level.
Moreover, this Doomsday space was peculiarly sinister, with only disaster striking for decades.
In such a short time, so many sinister Ghosts emerged, revealing quite an anomaly.