The system's words made Mag silent for a long time.
Underground City had developed very powerful technology in the past tens of thousands of years. They had the power and potential to look down on the Norland Continent.
Meanwhile, some of the races on the Norland Continent were still farming and hunting for their survival.
The Norland Continent's chronicle that was widely known, wasn't long actually. The time span was less than 10,000 years and most of them were records of the wars between the various races.
And it was a complete blank before that time.
However, Mag had collected many ancient books and some of them that were engraved in jade had a time span that was far longer than 10,000 years.
10,000 years ago, the Norland Continent had a civilization that was far more advanced than the current civilization.
Then, this civilization disappeared, as though it was being wiped away.
