The ink on the Marrow-Forging Script of the Obsidian King felt less like pigment and more like dried blood, etched onto a parchment that pulsed with a faint, necrotic rhythm. Sitting in the deepest shadows of the Pavilion of a Thousand Laws, Hua Sui allowed his spiritual sense to descend into the forbidden text. Unlike standard body-tempering arts that focused on nourishing the flesh with vibrant life-force to enhance durability, the Obsidian King’s path was one of calculated self-destruction. It demanded the practitioner to convert their very Qi into a frigid, crystalline toxin, forcing it into the marrow to shatter and rebuild the skeletal structure. It was a path that promised a body as hard as divine iron, but only for those who could survive the sensation of their bones being frozen and cracked from the inside out every single day.

  To any other disciple, this was a manual for madness. To Hua Sui, whose meridians already flowed in reverse and whose spine was fused with a parasitic black bone, it was the only logical solution.

  Just as he prepared to roll the scroll and return to the solitude of the Broken Soul Pavilion to begin his first refinement, the jade medallion at his waist erupted in a sharp, insistent vibration. It was a Mandate—a compulsory directive from the Inner Sect Hall. Every newly promoted Foundation Establishment disciple was required to complete a "Contribution Mission" within their first three months. Failure to do so resulted in the immediate forfeiture of their inner sect status and resources.

  Hua Sui tapped the medallion, and a projection of flickering characters appeared in the air.

  Location: The Burial Sword Valley. Task: Retrieve ten shards of Sunken Iron Essence. Danger Level: Moderate (Qi-Corroding Environment).

  The Burial Sword Valley was a scar on the landscape of the Crimson Peak, a jagged canyon where an ancient battlefield from a forgotten era lay buried under layers of rust and sorrow. It was a graveyard of shattered spiritual blades and the fragmented remains of high-level cultivators. Over the millennia, the valley had become saturated with Geng-Gold Malice and lingering corpse-aura. For orthodox disciples, it was a wretched place where the air was a corrosive mist that ate through spiritual shields and poisoned the blood. It was a place of scarcity and pain.

  For Hua Sui, however, it sounded like a banquet.

  He made his way to the Mission Hall to finalize the registration. The hall was a grand, vaulted chamber of grey stone, bustling with disciples in black-trimmed robes. As he stood in line to receive his travel permits, a sudden silence rippled through the room. A group of senior disciples entered, led by a tall man with eyes as sharp and cold as unsheathed steel.

  It was Lu Chen, the elder brother of Lu Tian—the "genius" Hua Sui had humiliated and broken in the arena.

  Lu Chen’s cultivation was at the third level of Foundation Establishment, and his presence was like a heavy pressure that made the surrounding air feel stagnant. He didn't speak; he simply walked through the hall, his gaze sweeping over the disciples like a hawk looking for a rabbit. When his eyes landed on Hua Sui, they lingered for a heartbeat longer than necessary.

  Hua Sui immediately lowered his head, slumping his shoulders and letting his aura flicker with the instability of a "flawed" foundation. He projected the image of a terrified, lucky survivor who was barely holding onto his new rank. He could feel Lu Chen’s spiritual sense brushing against him—a cold, arrogant probe that sought to peel back his skin.

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  Not yet, Hua Sui thought, his jaw tightening almost imperceptibly. I am not yet strong enough to crush your skull. Walk away, golden boy.

  Lu Chen eventually snorted, a sound of pure dismissiveness, and turned his attention to a group of elders. To someone of Lu Chen's status, a "mediocre" newcomer like 'Han Ming' was beneath notice, even if there was a faint, nagging sensation of dissonance.

  Leaving the sect gates behind, Hua Sui moved with a speed that belied his hunched posture. He bypassed the main roads, traveling through the jagged ravines until the air began to turn a dull, metallic grey. As he reached the entrance of the Burial Sword Valley, a blast of wind hit him, carrying the scent of oxidized iron and ancient rot. The wind was so sharp it could cut through the skin of a Qi Refining disciple instantly.

  A normal cultivator would have immediately summoned a protective Qi barrier, a glowing dome to keep the malice at bay. Hua Sui did the opposite.

  He stood at the mouth of the valley and cast off his outer robes, exposing his pale, scarred torso to the biting gale. He sat down in a meditative pose on a jagged rock, his fingers forming the mudras described in the Marrow-Forging Script. Instead of pushing the Geng-Gold Malice away, he opened every pore in his body, turning himself into a vortex.

  The wind tore at his flesh, leaving hundreds of tiny red lines across his chest and arms, but Hua Sui didn't flinch. He channeled his Inverse Qi, drawing the metallic toxins and the heavy corpse-aura deep into his body. He guided the corrosive energy past his muscles, past his organs, and slammed it directly into his ribs and his spine.

  The pain was incandescent. It felt as if a thousand needles made of frozen iron were being driven into his bones simultaneously. The black bone shard in his spine reacted instantly, pulsing with a violet light that fought against the invading Geng-Gold Malice.

  "Refine..." Hua Sui hissed, blood trickling from the corner of his mouth.

  His bones began to groan, the sound like metal grinding against metal. In the darkness of his internal vision, he saw his ribs turning from a dull white to a shimmering, obsidian grey. The Geng-Gold Malice acted as the hammer, and his Inverse Qi acted as the forge-fire. He was using the very environment that killed others to accelerate his own evolution.

  Hours passed as the sun dipped below the horizon, casting long, twisted shadows across the valley of blades. Hua Sui remained motionless, his body covered in a fine layer of metallic frost. He wasn't just collecting iron essence; he was becoming it. Every breath he took was heavy with the taste of rust, but with every breath, his foundation grew more stable, more terrifyingly dense.

  In the distance, the howl of a "Sword-Wraith"—a vengeful spirit born from a broken blade—echoed through the canyon. It sensed a living presence, a soul to feast upon. It drifted toward Hua Sui, a shimmering, jagged silhouette of hatred.

  Hua Sui didn't open his eyes. He simply reached out a hand. A strand of violet-black Qi shot out, coiled around the wraith’s neck, and dragged it inward. Instead of a battle, it was an ingestion. The wraith screamed as it was pulled into Hua Sui’s chest, its spiritual energy being torn apart and fed into the hungry maw of his Inverse Foundation.

  "More," Hua Sui whispered, his voice sounding like the scraping of a blade against stone.

  He hadn't even reached the heart of the valley yet, but he could feel the first layer of the Marrow-Forging Script taking hold. His vengeance was no longer a distant dream; it was becoming a physical reality, forged in the depths of a graveyard. He stood up, his skin now possessing a faint, metallic sheen under the moonlight. The mission to find Sunken Iron Essence was merely a secondary thought.

  The valley was not a challenge to be overcome; it was a feast to be devoured. And Hua Sui was the hungriest guest.