A group of four armed soldiers stopped Yan Qing and Chen at the final checkpoint, where the architecture abandoned even the pretence of transparency.

  There were no cameras here, no glass partitions or observation windows—only a heavy steel door set into poured concrete, its keypad painted over so many times that the numbers had softened into suggestion rather than instruction, as though authority itself had grown tired of remembering what it once required.

  “We will be accompanying you to your accommodation, Professor,” the soldier said, his voice careful, professional, not unkind.

  Yan Qing was already shrugging into his coat, the motion automatic. “OK,” he said. “Where?”

  “It’s in the same complex, just a ten-minute walk, sir,” the soldier replied, his eyes moved—lingering and weary —to Chen.

  Chen returned the look with calm indifference, neither inviting nor resisting scrutiny. He stood exactly where he had been standing moments before, posture unremarkable, presence absolute.

  The security detail clearly knew what Chen was beneath the pretence.

  Yan Qing offered a tired half-smile, trying to relieve some tension in the four men. “He is fine, let’s go then.”

  The door opened with a sound that was less a hinge than a memory of weight shifting, metal complaining as it yielded. Cold air rushed through the threshold, carrying with it the dry, metallic breath of disuse.

  Yan Qing stepped through first, rubbing his temples as if pressure alone could be reasoned with. “Where did they even build this thing?” he muttered. “This doesn’t look like—”

  The door sealed behind them.

  The sound lingered, echoing too long through the space beyond, folding back on itself in a way that made Yan Qing stop walking before he consciously understood why.

  The soldiers slowed their pace as the architecture changed.

  The clean, reinforced lines of the black site ended abruptly, giving way to poured concrete that bore the unmistakable marks of age—patchwork repairs, uneven seams, surfaces that had been repainted too many times to hide what lay beneath. The lighting dimmed by degrees, fluorescents replaced with older industrial strips that hummed faintly overhead.

  “This section is transitional,” the lead soldier said, noticing Yan Qing’s glance upward. “The facility was built around an abandoned chemical plant. Still officially registered as one.”

  Yan Qing frowned. “You’re telling me my accommodation is inside a chemical factory?”

  “Disguised as one,” the soldier corrected. “The original structure remains intact on paper. Environmental exclusion zone. No civilian traffic. No redevelopment permits. It keeps people away.”

  Chen walked beside Yan Qing in silence, his stride unhurried. His attention, however, had sharpened—focused inward rather than outward, as if he were listening to something below the threshold of sound.

  “The entry and exit both run through the main corridor,” another soldier added. “Originally designed as a pressure conduit. Thick walls. Reinforced ceiling. No windows. Easy to isolate.”

  Yan Qing absorbed that. “And my place?”

  “Accommodation wing branches off to the right,” the lead soldier said. “Past the main conduit.”

  "Where's the left one lead?" Yan Qing asked out of curiosity.

  "The old factory docking bay," the lead soldier answered without looking back.

  They passed through a heavy steel door that groaned faintly as it opened, releasing a breath of air that tasted dry, metallic, and old. Not outside air. Industrial air—filtered, recycled, never meant for comfort.

  The corridor beyond was utilitarian, wide enough to accommodate small equipment. Footsteps echoed too cleanly, sound flattening and rebounding in a way that made distance difficult to judge.

  They turned right.

  The right-hand corridor narrowed immediately.

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  The ceiling dipped lower. The walls closed in just enough to make the space feel funnelled rather than accommodating. Hairline fractures traced the concrete like old veins, sealed but not erased.

  Chen slowed.

  Yan Qing felt it—a subtle resistance, like walking into thicker air.

  A low sound passed through the corridor.

  A groan—deep, structural, the complaint of stressed material.

  “Hold,” the lead soldier said, raising a hand.

  Dust sifted from the ceiling.

  Then the corridor ahead failed.

  The far end sagged inward, concrete sloughing away in heavy sheets. Steel supports screamed as they twisted. A beam snapped with a sharp, concussive crack, and the space folded in on itself, sealing the passage in a thunder of debris.

  “Back!” someone shouted.

  They retreated instinctively, boots skidding on grit as the collapse finished the job, rubble choking the corridor completely. The dust hung thick in the air, burning Yan Qing’s throat as he coughed once and waved it away.

  “Retreat,” the lead soldier said. “We return to the main corridor and reroute—”

  The soldier died without even finished his sentences.

  His body just folded, his rifle clattered against the floor a full second later.

  The second soldier stopped instantly, weapon snapping up, mouth opening to shout—

  —and something passed through the space where his throat had been.

  Yan Qing did not see it.

  He saw the effect.

  Blood struck the wall in a thin, arcing line, too precise to be random. The soldier dropped to his knees, hands scrabbling uselessly at air, then tipped forward and did not move again.

  The corridor filled with the sound of breathing.

  Too loud.

  Too human.

  “Move,” the third one said sharply, already backing up, eyes darting from shadow to shadow. “Fall back—now—”

  His head turned slightly, as if following a sound only he could hear.

  Then his body twisted—

  —and was thrown sideways with enough force to break bone against concrete.

  The impact reverberated down the corridor, dull and final.

  The last one fired.

  The muzzle flash bloomed bright and brief, lighting the corridor in stark white frames. Bullets tore into nothing. The sound echoed, disorienting, amplified by the narrow space.

  Then the gun stopped firing.

  Yan Qing didn’t know why at first.

  Then he saw the agent’s hands.

  Still holding the weapon.

  No longer attached to the rest of him.

  They fell separately.

  Chen moved before Yan Qing could process it.

  He stepped forward, positioning himself instinctively between Yan Qing and the empty space ahead—the place where death was clearly standing without shape or outline. The air responded to him at once, pressure bending inward, the corridor groaning faintly as force began to gather.

  A shadow flickered across Chen’s face, his eyes darkening—black swallowing gold, until they gleamed, bottomless, like a solar eclipse. The air thickened. Somewhere behind the walls, metal groaned, a low, shuddering vibration that crawled up Yan Qing’s spine.

  He felt it first as a subtle warping, as if the corridor itself had drawn a slow, uneven breath. The floor seemed to tilt beneath his feet, not enough to topple him, but enough to make his balance uncertain. Yan Qing’s vision blurred at the edges, the world bending and flexing as if seen through warped glass. A sharp, electric pain lanced behind his eyes—so sudden he winced, hand flying to his temple.

  His fingers curled involuntarily, nails digging into his palm. His breath caught, a thin, startled gasp that sounded too loud in the hush.

  Chen’s head snapped toward him. In an instant, the pressure vanished. The corridor seemed to snap back into shape, the walls closing in, the air suddenly thin and cold. Yan Qing blinked hard, rubbing his forehead, steadying himself against the wall.

  “I’m fine, just got a headache all of a sudden.” he managed, the words automatic, brittle.

  Chen didn’t answer, but the gold in his eyes faded back to its usual shade. His gaze lingered on Yan Qing—steady, unreadable, as if weighing the invisible cost of what had just passed between them. For a moment, the air between them felt charged, thick with things unsaid.

  “Sorry,” Chen said at last, his voice clipped, the word taut with tension.

  Yan Qing blinked, realization dawning. “No, it’s okay. It’s me— guess my body doesn’t like whatever you just did.” His attempt at a smile faltered.

  Chen shook his head, lips pressed in a thin line, but offered nothing more.

  Yan Qing steadied himself, drawing a slow breath as the memory of that pressure—heavy and bruising—lingered in his body. He followed Chen into the narrowing corridor, each step echoing with the aftershocks of what had just happened.

  The corridor ahead yawned empty, shadows pooling in the flickering light. But the bodies behind told a different story.

  Chen didn’t hesitate. In a single, fluid motion, he scooped Yan Qing into his arms and ran, boots pounding against the concrete. The choice was pure instinct—immediate, absolute.

  Behind them, the corridor screamed. Concrete buckled with a sickening groan, as if some invisible fist were crushing the very bones of the building. Steel reinforcement snapped, the sound sharp and wet, like ribs breaking under impossible pressure. The passage they’d just cleared collapsed in a chain reaction—walls folding inward, ceiling tearing loose, debris raining down in choking clouds of dust. It wasn’t explosives or machinery—this was force, deliberate and merciless, erasing every trace of their escape.

  Something—or someone—was sealing off their path, hunting them with surgical precision.

  The corridor narrowed as they fled, turns tightening, the ceiling dipping so low that Chen had to duck, shielding Yan Qing’s head against his shoulder. The air grew thick with dust and the tang of scorched metal. Every breath tasted of panic.

  Footsteps echoed behind them—steady, unhurried, always the same distance away. Not chasing, not rushing. Simply present. Inevitable. Like a tide of stone, closing in, step by relentless step.

  Yan Qing clutched at Chen’s collar, breath uneven. “Chen—”

  “I’ve got you,” Chen said, voice steady despite the pounding in his chest.

  Something brushed past the wall behind them.

  Concrete cracked.

  A door they had passed moments ago collapsed inward with a shriek of metal, dragged open by nothing Yan Qing could see.