"Ruins? Of course I'm familiar with them." Li Fan was a frequent visitor to the depths of the Congyun Sea. He was no stranger to the ruins scattered across the seafloor.

"Are you suggesting these ruins belong to that lost civilization?" Li Fan asked.

Zhao Erbao shook his head. "No, no. These ruins are all local to Congyun…That's not quite right either..."

Zhao Erbao scratched his head, then gestured with his hands, forming a circle. "The place we now call the Congyun Sea wasn't originally a sea at all."

Li Fan paused, taken aback.

Zhao Erbao continued, "This area was originally land. But one day, it was suddenly submerged under the sea. Those ruins on the seabed belong to the civilizations that existed on that original land."

Submerged...