In the traditional scripture of the Azure Cloud Sect, the process of pill refinement was considered a sacred communion between mortal intent and the Heavenly Dao.
The scripture taught that herbs were born of earth, while fire was born of heaven. When mortal alchemists forced the two elements together in a bronze cooking pot, the resulting conflict generated “Pill Toxicity” (Dan Du)—the karmic payback of the earth spirits for having their essences stripped by human greed. Every pill, from the lowest mortal tonic to the highest divine core, contained at least thirty percent poison. Fighters who burned up too many pills piled up this toxicity in their marrow, eventually suffering horrific spirit vein collapse.
Lin Tao sat in the center of Pit Seven, surrounded by forty shards of shattered potion-made cooking pots brought by Deacon Chen, and chuckled softly in the dark.
“Karmic payback,” Lin Tao muttered to himself, his fingers tracing the crystal-clear carbon deposits coating an iron crucible shard. “A poetic excuse for unfit memory management.”
Through his left eye, Lin Tao examined the tiny atom-deep structure of the waste scum:
The true nature of pill poison was embarrassingly simple.
Ancient Precursor potion-made cooking pots were designed to operate with precise heat-powered heating cycles and self-running vapor distillation. But modern fighters, having lost the Precursor running manuals, simply stoked the furnaces with raw spiritual charcoal, overheating the volatile organic compounds until the delicate healing molecules pyrolyzed into toxic polycyclic hydrocarbons.
Also, to speed up the reaction, amateur alchemists threw in toxic lead and red stone catalysts that bonded with the active herbs. That created lethal organometallic complexes.
Pill poison was not divine punishment. It was unburned soot and heavy-metal contamination left behind by sloppy heat control.
Lin Tao didn’t need a thousand-pound fire or a hundred carts of spiritual charcoal to refine pure medicine. He only needed a centrifuge and a filter.
Working under the dim light of an oil lamp, Lin Tao and Tie Shan built a multi-stage clockwork refinery inside their stone hut.
From the scrap piles, Lin Tao selected three nested clay crucibles of varying air holes. In the upper vessel, he packed layers of crushed quartz sand, crushed fiery foam-stone, and activated willow-bark charcoal ground to a fine flour by Tie Shan’s massive mortar and pestle.
Beneath the charcoal filter, Lin Tao mounted a four-inch copper drain tube, lined up exactly to the natural gravity vector of the floor.
“Watch the boundary, Tie Shan,” Lin Tao instructed, pointing to the copper tube.
“I watch,” the giant rumbled, holding the heavy stone mortar steady with one massive hand.
Lin Tao took the three ounces of amber Dragon-Marrow syrup pulled out from the bronze crucible and mixed it with six ounces of pure mountain water from Tie Shan’s dented canteen. He poured the diluted solution into the top of the quartz-sand filter.
The dark, sticky liquid seeped slowly through the layers of foam-stone and activated carbon.
It passed through the charcoal bed. Then, the porous carbon lattice adsorbed the heavy soot molecules and unburned hydrocarbons through standard Van der Waals attraction. The toxic lead-liquid silver complexes, possessing a higher atom-deep weight, were trapped within the tiny pores of the quartz sand.
At the bottom of the copper tube, Lin Tao waited with his land-mapper metal pen.
The Precursor physics engine of this world sampled fluid dynamics at the standard twenty-four hertz refresh rate. At the boundary where the liquid separated into droplets, the water’s skin math experienced a heartbeat hitch.
Lin Tao touched the tip of his iron needle to the mouth of the copper tube at the exact moment of the frame refresh.
Ting.
The ungrounded static charge faded away. The atom-deep separation completed cleanly, stripping the leftover trace dirt from the solvent.
In traditional sects, apprentice alchemists spent decades memorizing thousand-year-old poems about harmonizing the “Dragon and Tiger” or balancing the “Yin and Yang breaths” within the cooking pot. They treated pill refinement as a mystical lottery, accepting that seven out of ten batches would explode into toxic waste scum. That even a successful pill would carry twenty percent lethal impurity. They never realized that the Heavenly Dao was not asking for poetic devotion. It was executing a predictable chemical distillation governed by water’s skin, atom-deep mass, and live spark charge.
From the tip of the copper tube fell a single, perfect droplet of liquid jade.
Drip.
The liquid struck the bottom of a clean fine china cup, emitting a soft, ringing chiming sound like a silver bell. It didn’t smell of burning coal or bitter stone ash. It radiated a pure, refreshing fragrance of fresh mountain pine and clean morning frost.
Lin Tao repeated the cycle until the cup was half full of shimmering, crystal-clear emerald liquid.
He reached into his green jade spatial ring, retrieved a small wooden mold carved from hard oak. Then he poured the emerald liquid into six circular depressions. He dusted the surface with powdered bone-knit bark and allowed the solution to desolvate in the dry volcano bowl draft.
Within thirty minutes, the liquid had hardened into six solid, perfectly ball-shaped pellets.
They weren’t the muddy, mottled brown pills sold in the outer sect apothecaries, covered in bitter soot and leaden glaze.
They were semi-clear emerald orbs, perfectly smooth, shimmering with internal gold star-bursts, and fully free of a single speck of black pill waste scum.
A flawless, zero-toxicity Grade-Nine Marrow-Tempering Pill—a mythical treasure that even the Grand Elders of the Upper Sect couldn’t produce more than once in a hundred cooking pot batches.
Lin Tao picked up one of the semi-clear green spheres. It rolled it between his callused thumb and forefinger.
Beside him, Tie Shan stared at the glowing pill. His heavy chest rose and falling in silent, respectful awe.
“Eat it, Tie Shan,” Lin Tao said calmly, holding out the green orb.
“For me?” the giant rumbled, his voice trembling with pause. “Too precious. Sells for hundred silver.”
“Silver buys food, Tie Shan,” Lin Tao replied quietly. “Strength keeps us breathing. Eat.”
Tie Shan took the emerald pill, placed it on his broad tongue, and swallowed it whole.