Thirty days of compounding produced thirty days of physical interest.
At the fourth watch of the morning, frost coated the tiles of the West Pavilion in a brittle, sparkling crust. Pei Jing stood in the center of the courtyard, stripped of his upper tunic, breathing in the freezing mountain air.
His skin didn’t break into gooseflesh.
Cold air struck ordinary human outer skin. Then, the arrector pili muscles tightened involuntarily, pinching the hair follicles to trap a tiny boundary layer of warm air. It was an inefficient living gearwork inherited from primates with dense fur.
Pei Jing’s skin reacted differently.
The tiny blood vessel sphincters in his skin layer squeezed tight in three hundred split seconds, shunting warm bright red blood into the deep muscular core. Meanwhile, the outer skin layer—the outermost layer of dead, keratinized cells—stiffened into an insulating load-bearing barrier. His skin felt cool to the touch, like smooth river dark rock. But his internal core heat remained locked at thirty-seven degrees.
He raised his right arm, rotating the forearm under the pale morning starlight.
The skin was no longer the soft, semi-clear white of a neglected clan youth. It had taken on a dull, matte amber sheen, resembling high-grade vegetable-tanned saddle leather. Where the thick, horn-hard had earlier protected only his knuckles, a fine, nonstop cross-hatched micro-texture of thickened horn-protein now covered his entire dorsal forearm, elbow, and the lateral crest of his shins.
He blinked, summoning the Ledger’s thirty-day audit report:
“Tier Three,” Pei Jing said. His voice was level, registering the milestone with the dispassionate satisfaction of an accountant closing a reconciled fiscal quarter.
In the standard martial hierarchy of the Great Yan Empire, mortal body training was divided into five distinct stages: Skin Tempering, Flesh Forging, Bone Cleansing, Viscera Refining, and Blood Condensation.
Ordinary students in martial sects spent two to three years of daily healing soaking and wooden paddle beatings simply to pass the second tier of Skin Tempering. Genetic plateaus, improper nutrition, and uneven recovery stalled eighty percent of practitioners before they ever touched Tier 3.
The Ledger didn’t recognize plateaus.
Ten percent every day meant that ten days of deliberate, high-intensity engagement produced an exact tier shift. With adequate wolf meat, bone marrow fats, and clean connective tissue intake, his body had blended thirty days of uninterrupted cellular rebuilding.
Now came the clockwork audit.
A balance sheet meant nothing until the assets were subjected to stress-testing under working loads.
Pei Jing walked toward the neglected western corner of the courtyard. There, an overgrown thicket of wild iron-thorn brambles grew along the base of the crumbling stone wall.
In Azure Province, iron-thorn was notorious among farmers and woodcutters. Its vines grew thick as a man’s thumb, armed with curved, three-inch woody spines as hard as seasoned oak and sharp as needle points. A stray cow wandering into an iron-thorn thicket would emerge flayed. That left strips of bloody hide on the barbs.
Pei Jing didn’t draw his chopper.
He walked directly into the center of the briar patch.
Scritch-crunch.
The stiff brambles caught against his bare chest, shoulders, and forearms. Curved thorns pressed into his skin with fifty pounds of leverage as his seventy-two-pound frame pushed through the tangle.
Pei Jing observed the contact points with cold and exact interest.
The points of the thorns didn’t penetrate.
Under the microscope of his tactile nerves, the thickened tough outer skin of his skin twisted slightly under point pressure, distributing the nearby crushing force across a broad lattice of interwoven connective tissue fibers.
Snap. Snap. Crack.
Four iron-thorns snapped cleanly off their woody stems, their points blunted against the amber skin of his left shoulder.
When he stepped out on the other side of the thicket, he brushed off the dry twigs. Across his chest muscles and forearms were half a dozen faint, dusty indentations where the thorns had scraped the surface sebum.
There was no blood. Not a single tiny blood vessel had breached.
“Puncture pushback against natural plant spines: one hundred percent,” he noted. “Pulling yield confirmed.”
Next came the stone hardness test.
Pei Jing knelt beside the stone water trough and retrieved a jagged slab of dark grey mountain slate, six inches across. It had broken off the roof during the autumn storms. The edge of the slate had split along its natural crystal-clear plane. It formed a serrated blade sharp enough to slice through hemp rope with a single pull.
He placed his left forearm flat upon the split-pine bench, palm up.
He gripped the slate blade in his right hand, positioning the razor edge against the soft skin of his inner wrist, directly over the wrist blood vessel.
He applied twenty pounds of downward pressure.
Then, with a slow, deliberate motion, he dragged the slate edge three inches along the axis of his forearm.
Shhh-krrr.
The sound was not the wet parting of flesh. It was the dry, gritty scraping of flint against dense rawhide.
Pei Jing lifted the slate.
On his forearm, a shallow white chalk line marked the path of the stone. He licked his thumb and wiped the skin. The white dust vanished, revealing the smooth, unbroken amber surface beneath. The epidermal horn-protein had sustained zero load-bearing jagged cut. Only tiny stone fragments from the slate edge had snapped off against his arm.
“Blunt slate edge pushback: optimal,” he murmured. “Estimated cut protection: equivalent to two layers of boiled ox hide.”
He dropped the slate back into the mud, then stepped up to the hardwood practice post.
He raised his right leg. He swung his shin horizontally into the dark timber trunk with sixty percent force.
THWACK.
The sound was dull and heavy. In the past, such an impact would have crushed the bone-skin over the anterior border of the shin bone, producing immediate tiny blood vessel heavy bleeding and excruciating bruising that lasted two weeks.
Today, the sensation was merely a dull throb of nearby pressure. The blast wave passed into the dense muscle-sheath wrapping the tibialis anterior muscle. It scattered down into the ankle without causing under-skin bleeding.
He checked the skin of his shin. A faint redness bloomed under the amber outer skin, then began fading within sixty seconds as blood flow normalized.
“Body rebuilding confirmed across all outside planes,” he summarized.
The physical gains were proven. But the balance sheet carried an immediate working debt: inventory depletion.
He returned to his quarters and inspected the larder.
The three wolf carcasses, which had yielded over one hundred and ten pounds of prime meat and bone marrow, were nearly exhausted. Three small strips of salted loin hung from the chimney, weighing less than four pounds in total. In the corner, the glazed clay crock held two pounds of rendered animal fat.
At his current rate of body-energy consumption—eight thousand calories per day during intense physical training—four pounds of meat and two pounds of animal fat represented forty-eight hours of working runway.
When the fat ran out, body rebuilding would stall. If he tried to push into Tier 4 without dense rich fats and nutrients, the Ledger would begin issuing body-energy deficit alerts, threatening internal organ tissue breakdown.
“Runway: two days,” Pei Jing calculated. “Immediate capital generation needed.”
He turned his eyes to the three cured wolf pelts hanging from the cedar poles under the roof edge.
Over thirty days of ash-and-salt curing, the wolf pelts had transformed into stiff, durable winter furs. The guard hairs were long, lustrous grey with black tips, entirely free of bloodstains or rot. He had felled the guard with a single arrow to the ribs and dispatched the other two with single neck punctures. Because of that, the hides had zero load-bearing deep cuts across the prime backstraps.
In the Cloudford Town central bazaar, a standard, torn wolf pelt fetched four to five hundred copper cash.
A prime, flawless winter pelt was worth at least eight hundred to one thousand copper cash.
Three prime pelts represented about two and a half to three silver coins of liquid asset.
With three silver coins, he could purchase fifty pounds of cured pork fat, twenty pounds of beef marrow bones. A selection of healing herb waste scum to formulate external skin-toughening washes to speed up his training toward Tier 4.
Pei Jing took down the three pelts, rolled them tightly with the fur inward to protect the hair from dust. Then they bound the rolls with hemp cord.
He strapped the bundle to his back, put on his coarse patched tunic. Then he secured the eight-inch pig-iron chopper and antler-handled skinning knife beneath the linen folds where they wouldn’t draw unnecessary attention from town constables. Beside the chopper hung the Black Mountain Whetstone in its oiled-cloth sleeve. He pressed his thumb against the dark rock’s dished flank. He confirmed the stone was anchored tight against his hip so it wouldn’t clatter during the trek.
He took the western riverbank trail down toward the town. He avoided the North Gate where the Black Tiger Gang kept an illegal collection toll on grain carts. He walked along the gravel embankment of the Cloudford River. He watched the water churn grey and cold between willow stumps, his boots moving with steady, silent purpose.
He checked his pocket.
The original eight copper cash were still there, resting in the corner seam.
“Time to convert inventory into liquidity,” Pei Jing said, adjusting the fur bundle across his upper back muscle.
He stepped onto the paved stone bridge leading into the bustling heart of Cloudford Town.