C1474 Entering the Illusion Heaven Immortal Cave Again

A hundred thousand years ago.

Chen Ping arrived once more. His previous visit was to resolve issues with a violent doppelgänger, but this time, he was here to test some of his theories.

This era was one where monsters roamed freely, and humans had no permanent homes. Although there were many strong individuals, they were still weak compared to the endless hordes of monsters