Deep within the earth, a primordial hum vibrated through Lin Xiao's bones. He had reached the core, the true 'living heart' of the Three Thousand Dao Continent. Demonic energy thrummed around him, a hungry, ancient entity. This was no mere cavern. It was a vast, pulsating chamber, its walls slick with a viscous, crimson liquid that glowed with an eerie, internal light. Veins of pure, chaotic energy snaked across the cavern roof, dripping iridescent motes onto the floor. Each drop sizzled as it hit the ground, leaving behind a faint, acrid smoke. A pervasive warmth, thick and suffocating, pressed in from all sides. It wasn't the heat of fire, but the raw, uncontrolled energy of creation and destruction intertwined. Lin Xiao felt the continent's lifeblood, its very essence, swirling around him. This was the nexus, the point where all ley lines converged, where the world's power slumbered. To awaken it, to *claim* it, would mean absolute dominion. His Demonic Sovereign's Eye flared, piercing the gloom. At the very center of the chamber, a colossal, crystalline structure pulsed. It resembled a grotesque, beating heart, many times larger than any mortal could conceive, tethered to the cavern by thick, root-like conduits of pure qi. This was it. The source. The ultimate key to Dao Transformation. "System," Lin Xiao’s voice echoed, rough and low, carrying a tremor of anticipation he rarely allowed. "Initiate the ritual. The final sacrifice." [Affirmative. Host’s current humanity percentage: 3.7%. Commencing full severance protocol. Warning: Process will be irreversibly painful.] A cruel smile stretched across Lin Xiao’s lips. Pain was merely a sensation. A fleeting inconvenience on the path to ultimate power. He had long shed the weakness of sentiment. He embraced the abyss, the cold, calculating void that now defined him. This was the final step. He strode forward, his boots squelching softly on the damp ground. Each step brought him closer to the beating heart, its rhythm growing louder, faster, like a drumbeat pounding directly in his chest. Demonic qi surged from his Dantian, a black inferno consuming his meridians, preparing for the monstrous absorption. Reaching the base of the colossal heart, Lin Xiao raised his hands. Dark energy crackled at his fingertips, a prelude to the storm. He pressed his palms against the crystalline surface. It vibrated under his touch, cold and alive. A jolt, sharp and electric, surged through him, making his muscles lock. Waves of ancient power, primordial and untamed, crashed against his cultivation. It sought to overwhelm him, to tear him apart. But Lin Xiao stood firm, his will unyielding, a solitary rock against an endless ocean. His Demonic Sovereign’s Physique was honed for this, forged in countless battles and sacrifices. "Come," he snarled, a challenge to the world itself. "Give me your power!" The ritual began. Black tendrils of demonic qi erupted from Lin Xiao’s form, piercing the crystalline heart. They burrowed deep, seeking purchase, intertwining with the ancient energies within. The colossal heart pulsed faster, its crimson glow intensifying, casting grotesque shadows that danced across the cavern walls. The very air grew heavy, thick with raw, spiritual power that threatened to atomize anything not strong enough to resist. Suddenly, a searing agony ripped through Lin Xiao’s mind. It wasn't physical pain, not yet. This was a deeper, more insidious torment, a violation of his very essence. Memories, long suppressed, flickered to life. A child's laughter, bright and innocent. A hand, warm and gentle, stroking his hair. A face, full of kindness, now blurred by the mists of time. He gasped, a sound torn from his throat. What was this? The system had promised a clean severance. But these weren't just memories; they were *feelings*. The ghost of warmth, of connection, of a life he had purposefully abandoned. It was the humanity he had meticulously chipped away, now fighting for its last breath. Another memory flashed, sharp and vivid. A young woman, her eyes sparkling with affection, her smile a gentle sunbeam. He remembered her name, a name he hadn't thought of in centuries. *Liya*. The sound of it, even in his mind, was a physical blow. The tenderness, the shared dreams, the foolish hope of a future together – it all surged back with crushing force. His body convulsed. Not from the power, but from the raw, emotional onslaught. A part of him, a tiny, buried fragment, screamed to stop. To pull back from the precipice. To reclaim what was being torn from him. But the power, the immense, intoxicating power flowing into him from the continent's heart, was a siren song he could not ignore. [Severance protocol at 10%. Host’s mental resistance weakening. Maintain focus.] The System's cold, synthesized voice cut through the chaos in his mind, a sharp, unwavering command. Lin Xiao gritted his teeth, his jaw aching. He pushed harder, pouring more demonic qi into the ancient heart. He would not break. Not now. Not when he was so close. The memories were mere illusions, remnants of a past he had outgrown. Weaknesses. Impediments. Across the continent, cultivators trembled. Mountains rumbled, rivers surged, and the sky, once clear, fractured with streaks of chaotic energy. Spiritual beasts howled in distress, sensing a fundamental shift, a tearing at the fabric of their world. The very ground beneath their feet groaned, a low, mournful sound. In the 'living heart' chamber, the crimson light intensified to an unbearable degree. The air shimmered, distorting the cavern, making it seem as if the walls were melting. Lin Xiao's demonic form expanded, black scales hardening, horns growing sharper, eyes burning with infernal light. He was becoming something more, something terrifyingly potent, but the cost was manifesting in a fresh wave of agony. Faces. So many faces. His family, his friends from a lifetime ago, their expressions morphing from love to sorrow, then to horror. They weren't just images; he *felt* their disappointment, their betrayal. It was a phantom blade twisting in his gut, a pain far deeper than any physical wound. A boy, his younger self, stared at him from a distant memory, eyes wide with terror, pleading with him to stop this madness. "No!" Lin Xiao roared, his voice layered with demonic resonance, but also a raw, primal scream of anguish. He felt a tearing, a rending of his soul, as if threads of light, precious and fragile, were being ripped from his very core. Each thread snapped with an echoing crack in his mind, replaced by a consuming cold. His body began to spasm violently, electrical currents of agony coursing through every nerve. The power surged into him, overwhelming and absolute, driving away the light, pushing him further into the abyss. The continent groaned in response, a worldwide shudder. The immense energy of the world core pulsed into Lin Xiao, seeking to replace what he had lost. His humanity, his compassion, his very capacity for empathy – it was all being consumed, devoured by the ancient hunger within the heart and the System's relentless demand. As the ritual progressed, the continent itself began to convulse, and Lin Xiao experienced searing pain as memories of his past humanity flash before him, begging him to stop, yet the power compels him onward.

Chapter 67: The Heart's Embrace, Dark Ritual