The brick's metallic sheen melted away into a translucence that pulsed like living flesh. Within its rectangular frame, rivers of molten gold surged like marrow flowing inside a bone. A dragon's roar echoed faintly across the lake, not in sound but in the marrow of every cultivator's being. The weaker ones coughed up blood on the spot, their bodies unable to withstand even a fragment of that majesty.
"It's… It's not a brick…" someone gasped hoarsely, kneeling from the pressure.
"Dragon… marrow essence… Ten thousand years…"
"That's impossible! Those bones should have long vanished from the world!"
