This thing is like a phone number; if you don't use it for a long time, you'll naturally forget it.
Xue Dili immediately found familiar coordinates within them, the coordinates of the Old Demon Emperor's homeland—a war-torn world where hundreds of tribes are engaged in brutal conflict.
Hundreds of races, hundreds of tribes begin the most cruel and bloody war. The Old Demon Emperor was the first to unify everyone, but his reign lasted less than 14 years before crumbling completely and splitting into countless small countries, engaging in endless wars for an unknown number of years.
During this time, the Old Demon Emperor has been diligently managing another world, to validate the things he understood on Earth.
Then he planned to return to his hometown to start a standard "Three years have passed, welcome the Demon Emperor's return!"
Or perhaps, "My foolish citizens, I have returned!"
