The first sensation was not light, but the sound of his own marrow frying.
It began deep in his chest bone, a sound like lard hitting an iron skillet at four hundred degrees. The freezing air of the disused chimney pipe vanished, replaced by a choking envelope of dry, white-hot gas venting from his own pores.
Lin Ke clutched a rusted iron grate bolt between his back teeth, biting down until his gums burst and copper flooded his tongue.
He didn’t scream. Screaming dropped belly pressure. A belly pressure drop during an active live merge would cause the dropping main heart artery to collapse into the Sanjiao channel.
Hold the seal, his mind rasped through the red static of blinding agony. Don’t interrupt the pipeline.
* * *
This was not a test model. There was no sandbox buffer, no phantom build absorbing the blow, no graceful exit code 137 to reset the state.
The Tian Fu was executing the compiled patch directly across his living hardware.
Beneath his pale, starved skin, his glassy glass spirit veins began to glow a dull, cherry-red. Through the thin parchment of his chest, the branching channels looked like molten wire laid across ribs of yellow ivory.
Tiny blood vessels burst in violent, even bursts along his collarbones. The blood didn’t run. It sizzled against the surface of his skin, baking into black, brittle crusts.
His core heat climbed through forty degrees.
Phase One: Channel Tempering.
The glass channels of Bing-Mai were naturally rigid and brittle, prone to fracturing under the slightest analog pressure wave. But under the forced breath flow of the Nine-Fold Overclocked Crimson Spirit vein, the internal walls were being subjected to extreme heat restructuring.
The heat was annealing the glass, fusing micro-fissures and coating the inner luminal surface in a hardened, non-porous glassy glaze.
The agony was total. It felt as though someone were threading white-hot barbed wire through his upper-arm arteries. It pulled it inch by painful inch toward his fingertips.
Lin Ke’s vision went entirely white. His nervous system screamed for blackout, but he refused to let the process fault.
To pass out now meant losing conscious modulation of the cooling loop. If the Kidney Shaoyin stream halted for half a second, the heat would breach the heart-sac.
Phase Two: Counter-Current Engagement.
With a conscious effort that tore at his sanity, Lin Ke forced his lower energetic nodes open.
A trickle of icy, stone-heavy fluid surged upward from his kidneys. It walked into the parallel bypass jacket he had architected in test model eighty-three.
The meeting of fire and water was a war of heat shock.
A high, whistling whine rose from his chest cavity—the sound of boiling steam trapped between tissue layers. Sweat flashed into vapor the instant it reached his collarbones, puffing out from his ragged hemp collar in thin white plumes.
His kidneys throbbed with a dull, heavy ache, screaming under the workload of filtering and pumping cooling fluid against the furious heat slope. Lin Ke’s hands clawed into the soot-covered floor, nails snapping against heat-proof brick. He dragged deep furrows into the century-old ash.
Twelve hours passed.
The chimney grew pitch-black. Night fell outside, then grey as dawn broke, then black again as another night swallowed the smelting ward.
Thirty hours into the merge, his fever spiked to forty-one degrees.
Lin Ke was delirious, his mind wandering into broken memories of flickering end-post screens in Dublin, emergency cluster failovers, and the endless hum of cooling fans. But every time his thoughts drifted toward death, his jaw clenched harder on the iron bolt. It sent a fresh spike of metal pain through his cracked teeth to yank him back to reality.
Thirty-four hours.
The cherry-red glow beneath his skin began to cool, shifting from an angry, violent scarlet to a deep, crystal-clear ruby.
The boiling hiss in his chest subsided into a rhythmic, smooth-flowing thrum. The counter-current cooling loop was settling into balance, the cold kidney fluid and the hot Yang packets flowing past each other in perfect, zero-drag counterpoint.
Thirty-six hours.
Lin Ke spat out the rusted iron bolt. It hit the soot with a dull clink, coated in dried blood and slivers of tooth enamel.
A clean, crystal-clear chime rang directly in the core of his soul.
Lin Ke collapsed forward, his forehead resting against the cold heat-proof brick.
He was alive.
His body was soaked in foul, greasy sweat that smelled of sulfur and dead body-energy waste. His skin was mottled with pale pink burn blisters, and his muscles felt like waterlogged ropes. But beneath the tiredness, running through the newly hardened glass waveguides of his chest and arms, was a thin, razor-sharp thread of crimson energy.
It didn’t drift like the sluggish Qi of the other slaves. It hummed at high hum, ready to pulse at the speed of a lightning strike.
He was no longer a mortal meat-sack waiting for bone turning to stone to stop his heart.
He had taken the first step onto the immortal path.
A shadow blocked the grey dawn light filtering through the base of the chimney pipe.
Boot leather crunched over broken brick.
“Well, well,” a grating voice sneered from the opening. “Look what crawled into the dirt.”
Lin Ke lifted his head, soot clinging to his hollow cheeks.
Overseer Fang stood at the mouth of the disused chimney pipe. An iron-banded heavy club was resting on his beefy shoulder. The overseer’s teeth were bared in a broad, vicious grin, his eyes alight with cruel realization.
“Thirty-six hours off the shovels, Seven,” Fang chuckled. She stepped into the narrow shaft, blocking the only exit. “I thought you dropped dead in the melted rock waste pit. But you’re hiding here, playing games.”
Fang hefted the iron heavy club, the metal whistling as he took a two-handed grip.
“Found you, runaway rat,” Fang purred. “Let’s see how fast you run once I turn both your kneecaps into gravel.”