The royal cipher was written not in words, but in the sharp-angled ratios of water-mapping depth-charting.
Yan Zhiqiu sat upon the tenth step of the dais, the Broken Slate—now permanently reunited with the scepter—resting upon her knees. With a bone metal pen dipped in thawed lamp-black, she traced the micro-incisions along the margin of the stone, comparing them against the exact tables in her father’s leather notebook.
Beside her, Qiao Ming knelt upon his oiled leather pad, holding the Folded brass star-compass steady so that the lantern light fell squarely across the counts. His weathered fingers traced the engraved arcs with the gut familiarity of an old water-court guard inspecting an irrigation weir.
“It is not an alphabet,” Yan Zhiqiu said, her eyes alight with the thrill of discovery. “It is a matrix of valve-shifted weight curves. Grand Chancellor Yan Wenhua was not merely a bureaucrat. He was a sound master builder. Look at these curves, Qiao Ming: they describe the exact deep ring needed to open the three defensive water gates without tripping the emergency bypass.”
Qiao Ming leaned closer, his rough nail pointing to a series of curved lines cut into the lower margin of the shale.
“The Slack-Water Deluge,” Qiao Ming whispered, his voice low and test. “See how the valve set operates: when the intruder’s drills penetrate the ceiling, we don’t vent the liquid starlight. Instead, we open the backup liquid silver water gates at Entry hall 820. The liquid silver, being thirteen times denser than…
