The darkness was a physical weight. It pressed in on them from all sides, thick and suffocating, broken only by the ragged sound of their own breathing. The faint, rhythmic thrum of the heart-sphere was a constant, low-pressure headache, a reminder of the impossible power that surrounded them. But it was the new sound that filled them with a fresh, sharp terror: the slow, heavy, grinding of ancient gears. It was the sound of the mountain waking up. And it was not happy.
"We need light," Gao Lian's voice was a flat, hard statement in the blackness. It was not a suggestion. It was a fact, as solid and unyielding as the stone they were sitting on. "Now."
Yingluo could hear the sound of Gao Lian's hands fumbling with a pouch at her belt. There was a soft scrape of metal on leather, then a shower of sparks. A tiny, flickering flame bloomed in the darkness, casting dancing, monstrous shadows on her face. She held a flint and steel, her hands surprisingly steady as she struck them again and again, trying to catch a piece of tinder.
The small flame was a lifeline. Yingluo felt a wave of gratitude so intense it almost brought her to tears. She turned her attention to the others. "Shen Miao, how bad is it?"
The warrior was propped against the tunnel wall, her face pale and beaded with sweat. "Bad," she said through gritted teeth. "It's deep. I can feel… I can feel the air on my back. I'm losing a lot of blood."
"Lie down," Yingluo ordered, her voice taking on a tone of authority that surprised even herself. "Gao Lian, when you get that torch going, bring it here."
Finally, a small piece of charred cloth caught the sparks. It glowed, then flared up, and Gao Lian quickly touched it to the end of a thin, oil-soaked torch she had pulled from her pack. A warm, wavering light pushed back the absolute darkness, filling the tunnel with a soft, orange glow. It was a small, fragile light, but it was everything.
The light revealed their full state of desperation. Shen Miao's tunic was soaked in blood, a dark, wet stain spreading across her back. Li Xun was still unnervingly still, his face ashen, his lips slightly blue. The boy was huddled a few feet away, his arms wrapped around his knees, his eyes wide and fixed on the flame as if it was the only real thing in the world.
Gao Lian brought the torch over. The light made Shen Miao's injury look even worse. The claw marks were deep, ragged tears in her flesh.
"We have to stop the bleeding," Yingluo said, her mind shifting into a practical mode she had learned in the palace infirmary. "Tear up your cloak. Give me the strips."
Gao Lian didn't hesitate. She pulled a knife and began slicing through the heavy wool of her own cloak, her movements efficient and ruthless. "We don't have time for this," she said, her voice low and tense. "That sound is getting closer."
As if to prove her point, the grinding noise grew louder. It was a deeper, more powerful sound now, and they could feel a faint vibration through the stone floor.
"We make time," Yingluo shot back, taking the strips of cloth. "She dies, we're down another fighter. We work together." She looked at the boy. "You. Come here. Hold the torch. Keep it steady."
The boy flinched but did as he was told, his small hands trembling as he took the torch from Gao Lian. He held it high, his face a mask of concentration, providing the light they needed.
Yingluo worked quickly, pressing the cloth pads against the worst of the wounds. Shen Miao hissed in pain, her body going rigid, but she did not cry out. She was a soldier. She endured.
"What about him?" Gao Lian asked, nudging Li Xun's still form with her foot. "Is he going to wake up?"
"I don't know," Yingluo admitted, her voice softening as she looked at Li Xun's pale face. "The blast… it must have knocked him out. He hit his head." She gently parted his hair, her fingers finding a lump, sticky with blood. "He needs rest. We all do."
"Rest is a luxury we don't have," Gao Lian said, peering into the darkness ahead. The tunnel was perfectly straight, the walls smooth and featureless, made of a dark, metallic stone that seemed to drink the light. It was not a natural passage. It was a corridor built for a purpose. "This isn't a tunnel. It's a chute. It's leading us somewhere."
"Wherever it is, it's better than back there," Shen Miao grunted, her voice tight with pain as Yingluo tightened a bandage.
The grinding sound grew louder still, a deafening roar that was now joined by a high-pitched shriek of stressed metal. The vibration in the floor was strong, a steady, powerful tremor that made the torch flame dance wildly.
"What is that?" the boy whispered, his voice thin and reedy.
Yingluo looked back the way they had come. The orange light of the torch didn't reach far, but it was enough. She saw it, and her blood turned to ice.
The tunnel behind them was disappearing. A massive, circular stone, easily twenty feet across, was filling the passage, grinding forward. It was not just a wall. It was a machine, a colossal pestle grinding its way through a mortal-sized mortar. The surface of the stone was covered in the same strange, glowing carvings as the sphere, but these symbols flared with a blinding, angry white light. The sound was the sound of rock being pulverized, of the very mountain being re-shaped by unimaginable force. It was coming for them. It was going to grind them into dust.
"Go!" Yingluo screamed, the word torn from her throat. "Go! Now!"
Panic, pure and absolute, seized them all. There was no time for thought, no time for planning. There was only the primal, desperate need to run.
Gao Lian was the first to move. She grabbed the boy, hoisting him onto her back in one smooth, powerful motion, and started sprinting down the corridor. Shen Miao, despite her terrible injury, pushed herself to her feet, her face a grimace of agony, and stumbled after her.
Yingluo was left with Li Xun. He was a dead weight, an anchor. For a second, a wave of despair so powerful it almost paralyzed her washed over her. She couldn't leave him. She wouldn't. She grabbed his arms again, her muscles screaming in protest, and heaved with a strength born of pure terror. She dragged him, his feet bumping and scraping along the metal floor, a dead man being pulled toward a grave that was not yet dug.
The grinding stone was behind them, its roar a physical force that pushed them forward. The air grew thick with dust and the smell of hot, pulverized rock. The light from the boy's torch was swallowed by the dust and the glare from the stone behind them.
They ran. They stumbled. They fell. They got up and ran again. Yingluo's lungs burned, every breath a knife of fire. Her vision swam, the world a blur of orange light and blinding white glare. She could feel the heat from the grinding stone on the back of her neck. It was so close. A few more seconds and they would be crushed.
Then, Li Xun stirred. A low groan escaped his lips. His head lolled, his eyes fluttering open. They were unfocused, dazed. "What…" he mumbled, his voice a weak, confused whisper.
"Li Xun! Wake up!" Yingluo screamed, her voice raw. "We have to move! Please!"
His eyes focused on her face, then on the blinding white light behind them. A flicker of understanding, of sharp, terrifying clarity, passed through them. He was the scholar. He understood machines. He saw what was happening.
"It's a cycle," he gasped, his voice weak but urgent. "A cleansing. It's resetting the system. Grinding everything in its path to base elements."
"I don't care what it is!" Yingluo yelled, pulling him forward with a final, desperate surge of energy. "Move!"
They ran on, the sound of their destruction right at their heels. The tunnel began to slope downward, steeply. They were half-running, half-falling, their speed increasing as the ground dropped away beneath them.
And then, just as she felt the first touch of the grinding stone's hot air on her skin, the tunnel opened up.
They burst out of the corridor and stumbled onto a wide, circular metal platform, gasping for air, collapsing in a heap of exhaustion and terror. They were at the edge of a vast, dark shaft, a bottomless well that plunged into the heart of the mountain. The grinding stone filled the tunnel entrance behind them, a wall of blinding white light and deafening noise, and then it stopped, sealing them in.
They were trapped. But they were alive, for a moment, they just lay there, breathing, their bodies trembling, their hearts hammering against their ribs. They had survived.
Li Xun, propped up on his elbows, looked over the edge of the platform into the blackness below. The torchlight was swallowed by the sheer depth of the shaft. But then, his eyes, now adjusted to the gloom, saw something. A faint, glinting pattern. Not a wall. A structure.
"It's not a drop," he said, his voice filled with a weary, horrified wonder. "It's a ladder. A spiral ladder. All the way down."
They all looked. Faintly, etched into the wall of the shaft, was a series of metal rungs and platforms, a dizzying, endless staircase that spiraled down into the black, unknown depths of the mountain.
The only way was down. Yingluo looked at the exhausted, injured faces of her friends. She looked at the silent, traumatized boy. She looked at the sealed tunnel, the white light of the grinding stone still glowing through the cracks like a furious eye. They had no choice. They had escaped one trap, only to find themselves at the entrance to another, deeper, darker one.
"Alright," she said, her voice quiet but steady, a calm in the center of the storm. "We rest for five minutes. Then we start climbing."