"Relics from the Mythical Era emit special energy radiation, though weak, they're not completely undetectable. With those guys' technology, if they secretly investigated before, finding so many relics isn't impossible. Don't forget the positioning service provided by the Mordan Empire."
Feng Yuan explained with a shrug, that's why he didn't immediately suspect an internal traitor. Normally, finding relics from the Mythical Era is indeed difficult, since prophecy isn't something people in the Main World are good at, and the Mordan Clan wouldn't idly make prophecies about such things.
As for energy radiation, this wasn't discovered by Feng Yuan; humans have long been studying it. However, since Mythical relics often involve many aspects, they're difficult to utilize even if found. So, countries aren't particularly interested in them.
