"Refine!!"
Yi Tianxing stared at the treasure flask and gave a light shout.
As the words fell, red and blue divine lights alternated within the Yin-Yang Treasure Flask, spinning like a Taiji symbol. In the center, a red-blue Yin-Yang Divine Flame emerged, surging violently. The demonic souls inside let out piercing, mournful screams as their bodies disintegrated into nothingness within the divine flame. All impurities were purged away, and the essences were flawlessly fused together.
Under a profound Daoist rhythm, the flask absorbed the energy of heaven and earth, the Dao itself, and even the surrounding abyssal demonic aura—all of it becoming nourishment, rapidly flowing into the Yin-Yang Treasure Flask.
Ding! Ding! Ding!
Within just a few breaths, crisp sounds like jade beads falling on a jade plate rang out from inside the flask—pleasant and melodious, bringing joy to the soul.
The Yin-Yang Treasure Flask hovered in front of him. With a flash of light at the flask's mouth, a pill appeared in Yi Tianxing's hand.
Upon closer look, the pill glowed with a red-blue luster. Its entire surface emitted a strange radiance, outlining mysterious patterns. Three distinct pill marks floated atop it like tiny pill-shaped clouds—lifelike and delightful to behold.
"A Three-Turn Yin-Yang Pill. Unfortunately, it just fell short of becoming a Four-Turn."
Yi Tianxing sighed to himself. Still, to be able to form a Three-Turn Yin-Yang Pill was already a rare feat—nothing to complain about. A pill of this caliber could greatly aid a body-refining cultivator at the third tier, enhancing physical strength, tempering the body, and even reversing the forces of yin and yang.
It was a precious pill beyond value.
This time, after devouring a large number of demonic souls, the Yin-Yang Treasure Flask had refined tens of thousands of Three-Turn Yin-Yang Pills.
"You actually turned demonic souls into pills... can this really be eaten?"
Lumberjack Liu Feng looked dumbfounded.
He had personally seen a whole swarm of demonic souls refined into pills—it was incredible. But since they were made from demonic souls, was it really safe to consume? He had his doubts.
"This is a Three-Turn Yin-Yang Pill. Taking it can increase your cultivation, grant you yin and yang energy, and refine your physical body. If you're gravely injured, taking it can quickly restore you—even if you're on the brink of death, it can preserve your life. And this is a Three-Turn version, with even greater potency. Here's a bottle—ten pills—take it as a safeguard."
Yi Tianxing smiled and handed over a jade bottle, filling it with ten pills before giving it to Liu Feng.
To him, these pills were just a drop in the ocean. But in the outside world, they were incomparably precious—perfect for building relationships and giving favors.
Liu Feng's character made him a worthy ally, someone worth drawing closer.
"It's really that miraculous?"
Liu Feng was full of curiosity but didn't refuse. No one would complain about having too many life-saving treasures like this. In critical moments, they could mean the difference between life and death.
"Let's keep going. I want to see what's truly at the bottom of this abyss."
With the demonic souls dealt with, Yi Tianxing grew increasingly curious about what lay below—while also growing more worried about Gongsun Daniu's safety.
Though the abyss seemed bottomless, they eventually reached its depths.
Splash!!
But instead of solid ground, they found a pitch-black body of water. Yes—water. If not for the quick reaction of the Nine Dragons War Chariot, the whole vehicle might have plunged straight into it.
"It's not ground... but water."
Yi Tianxing was taken aback. This strange development only added to the abyss's eerie mystery.
Looking around, he saw only darkness. The black waters stretched endlessly, resembling a vast sea. An unsettling aura emanated from the depths—it was a sea of despair.
Hiss!!
Dark demonic energy rose from the water, striking the chariot's protective barrier with sizzling sounds that made the scalp tingle.
Swish!
Liu Feng reached into the sea, pulling up a droplet of black liquid—black as ink.
Sizzle! Sizzle!
Touching it with his finger, a horrifying sight unfolded—his flesh began to rot at a speed visible to the naked eye. Even his true essence and mana were useless, corroded instantly. Flesh sloughed off the bone, which itself began to blacken.
Liu Feng reacted instantly, chopping off the affected finger without hesitation. From the severed stump, vital energy surged, regrowing flesh and bone in moments—his finger quickly regenerated.
"This water's terrifying! One drop nearly melted my body. If I fell in, there wouldn't be a scrap of me left! What kind of water is this?!"
Liu Feng was stunned. He had never seen water so deadly in his life.
"This is the Water of Sin—also known as Heaven's Sin Water. It's corpse poison water."
Yi Tianxing took a deep breath. The Wordless Heavenly Book had revealed the water's true identity—enough to make even great powers flee in terror.
Heaven's Sin Water—formed from the decay of countless corpses over eons of exposure to yin and demonic energy. It could only be created through rare and dreadful circumstances. Also called Corpse Poison Water, it was deadly—a touch could turn you into a zombie or reduce you to a puddle of foul sludge. Even divine flames struggled to dispel it. It could corrode divine weapons and magical artifacts.
Its classification: Heaven-Grade, Top Tier.
The deadliest of all toxic waters.
If the Nine Dragons War Chariot had touched it, even that divine vehicle might have been corroded and defiled.
"Heaven's Sin Water... You mean this entire sea is made of corpse poison? Just how many beings had to die to form a sea this vast?"
Liu Feng shivered.
It was unimaginable. This was a vast, boundless sea. Who knew how many beings had perished to create it?
"With a sea this size, the number of dead must be beyond count. No wonder this place is a forbidden zone. The demonic souls we encountered were likely the twisted remnants of those who died here. Even that tentacle may have just been the tip of the iceberg. I fear a monstrous entity is hiding here."
Yi Tianxing spoke solemnly, his mind racing.
With a Heaven's Sin Sea of this scale, there had to be a nightmarish presence hidden within. Compared to that, the tentacled beast and the demonic souls were insignificant.
"So what do we do now? If that girl fell into this sea, she's probably..." Liu Feng frowned.
Even a Nascent Soul cultivator would die here. Even great powers would retreat. This was a place of ancient horror.
"She's still alive. I can feel it. Her life flame hasn't gone out."
Yi Tianxing shook his head. If Gongsun Daniu had died, he would have sensed it.
"So what now? We're on top of the Heaven's Sin Sea. How do we even begin to search?"
Liu Feng furrowed his brow.
"If I can't find her… then I'll refine the entire sea. Let's see who can stop me when there's no water left!"
Yi Tianxing sneered coldly.
With a thought, The Hongmeng Heavenly Emperor Tower appeared in his hands. He carefully lowered it toward the sea.
As soon as it touched the surface, the tower emitted a powerful devouring force. The Heaven's Sin Water was pulled in at astonishing speed, forming a giant vortex as it was drawn into the tower's interior.
Inside the chaos space, the water was swiftly refined into chaotic energy.
"Incredible!"Yi Tianxing's eyes lit up. The high-quality Heaven's Sin Water yielded equally high-quality chaotic energy.
Boom!!
However, just as he prepared to continue, a massive black tentacle suddenly shot out from the sea and whipped the tower with overwhelming force, flinging it away.
Cracks appeared on the tower's surface under the blow—but healed quickly. Even so, the sheer power of the strike was undeniable.
Clearly, the terrifying presence hidden in the sea would not allow the Primordial Tower to continue absorbing its waters. That one strike was its answer.
"Bodies… so many bodies!"
Liu Feng paled as he pointed toward the sea.
The tentacle's strike had disturbed the calm surface, and now, countless corpses began to rise from the depths, floating across the black water.