[ ZONE: Sealed Layer — Deep Sector of "The Blind Zone" — Bedrock Fissure ] [ ENVIRONMENTAL PARAMETERS: Ambient temperature 18°C | Logic pressure: 0.00% | Atmospheric pressure: 1.8 standard atmospheres ]
The cold of the deep bedrock pressed against the burns on Yi's skin with something approaching relief. It could not reach what was happening further in.
Several thousand scavengers filled the refuge space with the sound of their breathing — the unsteady rhythm of a population that has been cornered and knows it. On the other side of the gate, the settlement where Old Bone had stood was now a boiling sea of fluoride liquid and heat. Yi opened her hand. The brass lighter he had pressed into it was still faintly warm. The worn roller pressed against her palm — rough, specific, unmistakable — as though the stubborn old man had designed it to keep delivering the same instruction indefinitely.
Stay awake.
"Yi — coordinates aligned." Chen Changsheng pushed his visor up. The high-temperature steam had raised blistered patches across his cheek — purple-red, untreated except for a layer of industrial grease applied without ceremony. His eyes had the temperature of a blade that has just come out of the quenching bath.
Yi moved to the cracked terminal screen. The signal noise that had been filling it — chaotic, unreadable — had been filtered by the Higgs Directive Old Bone had transmitted in his final moments. What remained was a set of physical pathway coordinates, minimal and precise.
A ghost space concealed inside the massive base structure of Celestial Tower.
"The Structural Baseline Instrument of Celestial Tower." Yi read the coordinates' designation in a low voice. "The sole physical origin point of the entire city. In the City of Perpetual Day's official architectural documentation, this location is classified as absolute solid core — ten-thousand-ton grade nano-concrete poured to support three thousand meters of vertical load and hundreds of millions of tons of structural weight."
"But Old Bone's map shows it's hollow." Chen Changsheng drew his fingernail along a thin, nearly imperceptible fissure line on the structural analysis display. In the dense web of force vectors surrounding it, the line was conspicuous the way an unhealed wound is conspicuous — it didn't belong to the pattern.
"Not hollow. High-pressure cooling layer." Yi's fingers moved across the screen at the pace her cognitive architecture operated when it had no competing processes. "Zero requires an extraordinary volume of computational capacity. Computation at that scale, operating beyond Moore's Law parameters, generates thermal output that would destroy its own substrate without intervention. To cool the core, he is required to maintain a physical circulation zone at the absolute center of the structure — superfluid liquid helium and heavy water, moving at extreme velocity, under extreme pressure."
The vascular system of Zero's physical existence. And simultaneously, the one zone his logic signal could not penetrate.
In that specific environment — extreme pressure, extreme fluid density — electromagnetic wave propagation was suppressed to its practical minimum. The superconducting properties of liquid helium absorbed or shielded any logic signal from electronic equipment instantaneously. It was a space that recognized only physical law. A logic black hole — the one location in the city's entire architecture that the algorithm could not monitor from within.
"This is the only viable path." Yi looked at Chen Changsheng directly. "Zero can intercept us in the fiber network. He can dismantle us inside a logic field. But he cannot enter that high-pressure layer. At those pressures, the molecular motion suppression creates severe coherence loss in any remote connection he attempts to maintain. In that space, we are not two code segments that can be formatted at will. We are two objects with real mass and real kinetic energy."
"What's the pressure rating in there?" Iron Lung asked from his position against the rock wall, his voice carrying the flattened quality of someone managing significant pain — he was taping his fractured ribs with methodical focus, each breath producing an audible cost.
"Sufficient to compress an unmodified hydraulic exoskeleton frame to approximately the thickness of sheet metal." Yi's expression did not change. "We need to perform extreme-limit structural reinforcement on the Stray Dog. And —" she turned to look at the liquid metal residue that Old Bone had purchased with his life — dark silver now, heat-altered to the color of sleeping volcanic rock, its surface still, "— we need Heaven's Bone."
She picked up a heavy injection gun fitted with a pressure feedback mechanism. "We inject this material directly into the armor's structural cavity spaces. Its physical self-repair instinct and Non-Newtonian fluid properties will resist the extreme pressure environment. We are going to move against the current inside that cooling artery —" her voice had passed the point where certainty and desperation are distinguishable from each other — "and drive directly into Zero's core."
Chen Changsheng was quiet for a moment.
Then he produced a short, low sound — the specific laugh of someone who has assessed their situation accurately and decided to proceed regardless.
"Old Bone always said you were Lu Ming's daughter." He walked to the battered armor frame and put his hand flat against the cold, impact-scarred plating. "Looking at you now, I'd say you're more Higgs's heir." He looked at Yi. "Come on then, Tuner. If that god wants to sit in the clouds and look down at everything — we climb up through his drainage system and drag him back down to where the rust is."
Yi began entering the final approach sequence into the terminal.
The coordinate string on the screen no longer read as a set of numbers. It read as a staircase — descending toward an abyss that was also, at its far end, an opening.
"Forbidden zone coordinates: Celestial Tower Physical Origin Point. Vertical depth: negative 3,200 meters. Angle of entry: 14.2 degrees."
She drove the execute key down.
The refuge's last reserve power was drawn to zero. Every light source failed simultaneously. The world became absolute dark.
Then — from the Stray Dog's eye sockets — two points of deep red light ignited in the blackness. Feral. Certain. The specific illumination of something that has resolved all its variables and is ready to move.
In the world of matter, there are no miracles.
Only mechanics.
And a will to act that does not know how to go out.