The so-called ruins are territories not yet trodden by the Human Race.
After Mother of Water opened up the Five Continents and Four Seas, the Human Race initially appeared in the Tianhe Realm as blood food for Demonic beasts. Eventually, a Great Divine Power Wielder took pity on them, teaching the arts of Immortal Cultivation, and gradually, Cultivators began to emerge among the Human Race.
But the Human Race's Cultivators simply couldn't compare with the naturally favored True Spirits. Not to mention those royal families who could undergo Divinity Transformation upon maturity, even ordinary Demonic beasts were beyond their defeat.
In order to maintain the survival of their species and keep the embers of hope alive,
led by Sages, the Human Race set forth from Central State, expanding and branching out. Some crossed the seas and arrived here in the East Continent.