The ancient stone chamber fell back into eternal darkness as Lin Yuan stepped out, the slate door grinding shut behind him. In his leather travel bag rested the heavy ingot of Star-Core Iron and the original bamboo scroll of the Nine-Fold Vajra Forging Technique.
Returning to Wu-Tan Outpost before the morning patrol could spot him, Lin Yuan seamlessly resumed his daily routine. To the outer market district, he was still just Proprietor Lin—the quiet, polite blacksmith and apothecary who always had a mild smile and a reliable word for his neighbors.
But beneath that calm surface, the gears of a massive social shift had already begun to turn.
Saving the life of Gao Xun, the undisputed young master of the dominant Gao Family, yielded immediate and massive dividends. Within days, expensive carriages bearing the Gao crest began stopping outside Lin Yuan's modest shop front. He was invited to private banquets in the luxurious inner district, stepping into the gated estates of the town's ruling elite. To the upper circle, he was an enigmatic, low-profile wandering practitioner whose medical and forging talents were invaluable.
Lin Yuan did not let the sudden prestige go to his head. He treated it exactly for what it was: a high-level camouflage and an unhindered pass to gather data.
Whenever he visited elite estates, clan archives, or high-end auction houses under the guise of an honored guest, his left hand would casually rest against a bookshelf or brush past a display of private martial collections. Hidden beneath his skin, millions of microscopic nanobots would swarm out, executing silent, high-speed optical and structural scans of forbidden martial texts, secret medical journals, and rare anatomical charts.
[Data Acquisition Protocol: Active.] [Stealth scan complete. Logged: "Iron-Blood Meridian Routing", "Flowing Bronze Breathing Stance", "Tendon-Stretching Art"...] [Syncing with "The Grand Library". Total archived volumes: 142. Data saturation sufficient for structural synthesis.]
With a massive foundation of local body-tempering knowledge finally secured, Lin Yuan closed the doors of his private quarters for three consecutive nights. It was time to build his own path.
In the center of the dark room, Lin Yuan sat cross-legged on the stone floor. He didn't want to blindly practice the Nine-Fold Vajra Forging Technique or any other primitive local art. In traditional cultivation, when a practitioner wanted to switch to a stronger manual later in life, they often had to cripple their own cultivation, destroy their foundations, and start over from scratch.
To a scientific mind, that architecture was fundamentally flawed. He needed a system that was infinitely upgradeable.
'Chronos,' Lin Yuan commanded internally, his voice echoing in his cold mind. 'Use the optimized parameters of the Vajra Forging Technique as the core logic. Strip away the stylistic limitations of all 142 scanned manuals. Synthesize a foundational framework that does not occupy my biological pathways, but instead creates an adaptive, modular structure.'
[Computation Engine: Initializing Synthesis Protocol...] [Analyzing local gravity constraints ($2.4\times$) and atomic density...] [Synthesizing... Error corrected... Structural blueprint finalized.] [Projecting Foundation: "The Primordial Lattice".]
Suddenly, an agonizing, freezing sensation erupted along Lin Yuan's spine.
Beneath his skin, the microscopic Necronite nanobots did not alter his biological flesh or fuse with his muscles. Instead, they began to align themselves with surgical precision into microscopic, interlocking black lines. They wove a complex, geometric network that mapped perfectly across his skeletal frame, his nervous system, and his deep cellular tissue.
Looking down at his own arms, Lin Yuan could see faint, pitch-black geometric lines pulsing beneath his skin before fading into the depths of his body.
The Primordial Lattice was successfully established.
This technique was completely unique to him. It carried no traditional cultivation levels and provided no instant, explosive power. Instead, it was an empty, indestructible metaphysical skeleton. It was a structural framework designed to solve the ultimate problem of progression.
If Lin Yuan later discovered a Level 10 divine body-refinement technique, he wouldn't need to destroy his current strength to learn it. He could simply use the AI to scan it, convert it into a "data module," and stack it directly onto the Primordial Lattice. The black lines would absorb the new technique, layer it perfectly over his existing traits, and optimize its efficiency to match his unique anatomy.
He had built a framework that could infinitely inherit, stack, and evolve any power system this world could throw at him.
As the final black lines settled deep into his marrow, Lin Yuan opened his eyes, the dark room illuminated by a fleeting, cold blue glow from his pupils. The foundation of his absolute ascension was locked into his very soul. He was finally ready to grow.