The sun pinned to the sky was a blind eye ten thousand leagues away, casting a sickly yellow pallor over the crags of You Ming without giving off a shred of warmth.
Where the jagged horizon ended, the world simply broke off into nothingness. No stars. No cloud bank. Only the suffocating, pitch-black maw of the Desolate Void pressing against the planet's throat like the lid of a stone tomb.
The dull thud echoing off the precipice sounded like a heavy butcher's mallet striking a side of frozen beef.
Across the snow-swept courtyard, dozens of bare-chested disciples slammed jagged slabs of black granite against their own ribs. The sub-zero wind had turned their skin into mottled patches of bruised purple and dead grey. With every jarring blow, skin split, and dark blood welled from the cracks, freezing into black crusts before it could drip to the gravel. Drawing a breath out here burned the throat like swallowing crushed glass.
"Hit harder, you dogs!" roared the Drill Instructor from the edge of the terrace. The scars across his broad back were woven thick as anchor ropes. "Bone does not turn to iron by coddling! If you want mercy, throw yourselves off the gorge and feed the frost-wolves!"
A dozen paces behind the ranks, lingering by the cliff stairs with a frozen iron pail in his hands, Lu Chen coughed quietly into the frayed wool of his collar.
The cough was deep, rattling wetly in his chest before catching on his windpipe. Keeping his hand tucked inside his oversized sleeve, he wiped a speck of dark phlegm from his chin before anyone could look his way.
He was seventeen, but his frame was slight as a starved child's. His wrists were so thin that if he tried to hoist one of those granite slabs with both hands, the forearm bones would splinter before the weight cleared the gravel. His mother had perished bringing him into this frostbound penal valley; his father had died three winters later, swallowed by a gas blowout in the deepest iron fissures. All he had inherited was a ruined constitution and an ancient debt of life owed by Master Yan, the chief apothecary of Cold Bone Valley.
"Keep your head down when I pass, runt."
A heavy disciple at the flank of the formation let his boulder drop with a heavy thud and spat onto the gravel. The spit froze instantly, clicking against the stone like lead shot.
It was Ba Shan. He was nineteen, built like a mountain ox, his hide hardened to the second grade of Bronzeflesh.
In Ba Shan's bloodshot eyes, there was more than the casual malice of the strong trampling the weak. Deep in his gaze lay a foul, churning revulsion—an instinctual disgust he could not have named if he tried.
It was as if Lu Chen’s very presence poisoned the air. As if the frail boy had no right to draw breath under these heavens.
Lu Chen kept his eyes fixed on the frozen stones by Ba Shan's boots, his stomach tightening with cold dread. He knew better than to stare back; Ba Shan could break his neck with one hand and face no more than a night in the stocks. Everyone in the valley—instructors, guards, fellow slaves—looked upon Lu Chen with that same inexplicable hatred. He had learned early that survival lay in making himself small and indispensable.
"Old Yan sent me for the slag ash," Lu Chen muttered, his voice hoarse from the wind. "If the kettle goes cold, your rib paste will spoil in the fat. The instructor will have your hide if you cannot train tomorrow."
Ba Shan’s jaw worked, his heavy brow twitching with irritation. The threat of Master Yan was the only thing that kept the brute's hands off him; the one-eyed old cripple in the forge was the only man in the camp who knew the boiling ratios of caustic salves and lead pastes that kept broken men on their feet. Without those ointments, a cracked rib in this climate turned to gangrene within three days.
"Watch yourself, stray," Ba Shan growled, taking a step back toward the ranks. Lingering near Lu Chen seemed to make the big man’s skin crawl with unease. "I am coming to the forge at dusk. If that paste does not numb my side, I will grind your knuckles under my heel."
Lu Chen waited until the brute turned back to his boulder before shifting his grip on the frozen iron pail. The weight sent a dull throb through his thin arm, but he kept his head down and hurried toward the smoking cavern mouth cut into the cliff face.
***
The apothecary cavern offered no true relief from the cold, only shelter from the wind.
The air inside was thick and sour, smelling of rancid sheep tallow, boiling bitumen, and crushed lead roots. Three massive cauldrons sat over pits of burning black shale, radiating an oily, stifling warmth that coated the tongue with soot.
At the largest workbench, a hunchbacked old man with a thick leather patch over his left eye was slamming an iron pestle into a stone mortar, pulverizing dried root husks with heavy, rhythmic thuds.
"Took you long enough, Chen," Master Yan said without breaking his rhythm, his voice scraping like gravel under a boot heel.
"The wind was high on the stairs, Master," Lu Chen said, setting the iron pail by the hearth. He peeled off his stiff sheepskin coat and hung it on an iron peg, standing in his threadbare grey tunic.
"Fools outside, pounding meat against stone," the old man muttered, wiping soot from his scarred forehead with the back of a calloused hand. "They think breaking their ribs turns gristle into immortality. Meat is just meat; hammer it all you like, it rots the same in the end. Stoke the flue. If the shale heat drops for even a minute, the tallow curdles into sludge that will take a man's skin clean off."
Lu Chen moved to the low hearth, taking up the iron poker to shift the glowing coals. He had tended these cauldrons since his tenth winter, learning the subtle shifts in the brew by the color of the oily steam.
Ever since childhood, he had sensed something strange in the air that others seemed blind to. In the mountain gales and the smoke of the hearths, there were faint, untouchable currents slipping through the rock. But touching those currents was the cardinal taboo of the nine worlds.
The elders called it the Heaven's Poison. To draw it into mortal lungs was an instant sentence of death.
A heavy, wet concussion shattered the silence of the valley outside, shaking the cavern with enough violence to rattle the heavy cauldron covers.
It was not the sound of stone cracking. It was the sickening, muffled rupture of living tissue blowing apart from within.
A chorus of panicked shouts erupted from the courtyard.
Master Yan froze, his iron pestle hovering over the mortar. "Another fool," the old man whispered, his lone eye hardening with grim certainty. "Another fool opened his pores."
Lu Chen dropped the poker and rushed to the cavern doorway.
In the middle of the training terrace, where the black granite was swept clear of snow, lay a circle of shredded gore and smoking crimson sludge. A senior disciple who had been refining his third stage of bone-tempering lay in torn pieces across twenty paces of stone.
The man had evidently let his discipline slip under the agony of the stone blows, drawing a deep, unguarded gasp of the mountain draft deep into his lungs. The wild breath of the heavens had touched his inner organs, and his torso had burst outward like a clay pot overcharged with burning oil.
"Shovel it into the abyss!" the Drill Instructor roared, his voice cracking with terror as he backed away from the smoking remains. "Scrape the stone clean before the frost binds it!"
While the terrified disciples scrambled with wooden shovels to clear the steaming muck, Lu Chen stood frozen by the lintel, his breath catching in his chest.
Above the smoking crater of the blast, he saw something no one else seemed to notice.
A faint, violet current was rising from the shattered flesh, shooting upward along the mountain ridge toward the sickly yellow sun, drawn toward the void like smoke up a chimney. And as the howling draft sheared through that rising vapor, a tiny speck tore free.
A stray ember of shimmering violet light, no larger than a grain of sand, drifted downward through the grey gale.
It tumbled directly toward the cavern entrance where Lu Chen stood.
Every nerve in Lu Chen’s body screamed at him to throw himself backward into the dark. That tiny wisp was the very poison that had just torn a grown man to pieces.
Yet as the ember drew near, an ache stirred in the marrow of his chest—an ancient, starving pull that made his frozen hands tremble with inexplicable longing.
He did not step back. In a daze of terror and desperation, he reached out his left hand.
The wisp struck the tip of his index finger.
Lu Chen shut his eyes, bracing for the wet, sickening blast that would tear his arm from his shoulder.
Nothing tore. No skin peeled. The air around him remained still.
Instead of burning through his flesh, the violet wisp sank through the dry cuticles of his finger like a drop of hot oil into dried leather. A faint, uncoiling warmth glided smoothly along the sinews of his forearm, passed his elbow, and settled deep into the hollow space beneath his navel.
It rested there, quiet and steady, throwing off a gentle, persistent heat that spread through his frozen midsection.
Lu Chen opened his eyes and stared at his open palm. No blister, no charred flesh, not even the scent of burned skin. Deep in his belly, the warmth continued to turn, soothing the dry, scraping ache that had plagued his lungs since the cold set in.
The poison of the heavens... the untouchable fire that blew men to pieces...
It had settled inside him without a sound.
Lu Chen lifted his gaze toward the cold, dying sun and the pitch-black void beyond the peaks, his heart hammering against his ribs in stunned disbelief.
If that breath was death to every living thing in this world... what was he?