The threshold of Entry hall 501 did not fall to water, nor did it yield to the quiet attrition of sixty thousand tides. It burst under the bite of star-fallen iron.
Qiao Ming stood thirty paces back along the transverse gallery, his bare, horn-calloused feet planted flat upon the cold hard speckled rock flags. The stone beneath his soles was shivering. It was an unnatural shaking. Not the slow, oceanic heave of the Ark’s keel settling into deep-sea silt, nor the rhythmic breath out of the stone lungs that controlled the air chimney pipes eighteen leagues below. It was a rapid, percussive chatter: seventy impacts per second, sent through four hundred paces of solid fiery bedrock.
Overhead. There, the ribbed groin vault met the main transverse arch, a hairline crack cried gray powder. The dust fell through the still air in a straight, unbroken thread, pooling upon the toes of his left foot like dry salt. He didn’t brush it away. In his five hundred years within the Ark, he had learned that every particle of stone carried weight, history. A silent testimony of the ages before the sky dissolved into chaotic salt water.
Beside him, Yan Zhiqiu crouched low against the carved stone base of an ancient water-clock. Her hands held the Broken Slate upright before her ribs, the hardened edge pressed firmly against the dark leather of her courier tunic. Her dark eyes were fixed upon the ceiling arch, unblinking, reflecting the faint green soft glow that seeped…


