The City-State floated rootlessly over the Endless Sea, with an 850-meter "thick" base below which seemed to be an endless dark deep water. The deeper you dive into the sea, the more you heard noises that were hard to understand, and saw lights and shadows that were hard to understand. And the first explorer to cross the one-kilometer depth went mad after rushing to the surface of the sea, leaving the world with only one line—
"We all died there."
This was what happened during the "Dive Deep Project" of the Frost City-State as it went from its inception to gradually becoming not quite right.
Duncan fell into a brief moment of contemplation, suddenly realizing that even without delving into the Spirit Realm and the profound depths, the dangers and strange occurrences hidden in the Endless Sea were no less substantial in this "real dimension" of the world. After a short reflection, he suddenly asked,
"What happened to that explorer afterward?"
