C2010 Defeated.

The white-bearded old man knew what Lachlan was thinking and explained with a smile.

"This map really exists in the Celestial Realm, but it is an underground ancient city that has collapsed."

"Before the Celestial Realm was divided into five regions, many ancient cities appeared in unexpected places."

"As the world changed and war raged, the ancient city was buried or sunk deep into the ground