There was infinite sorrow in the Supreme Emperor's voice.
Li Yao sighed, too.
The stronger a civilization was, the more arrogant it would be, and the more likely it would destroy itself. Maybe, the hundreds of ancient civilizations before the Pangu civilization were not destroyed by the primeval relics but by their own ambitions that were triggered by the primeval relics.
Li Yao sighed and listened attentively.
"My only friend told me that it was the best warriors and the cruelest killing machines of the Pangu Civilization who attacked the primeval relics. Also, they were controlled by a mysterious force and could turn into primitive, wild animals. The compatriots in the primeval relics were mostly non-combatants, experts, scholars, and researchers. Although they cracked a lot of combat techniques of the ancient civilization and repaired some war machines, they never thought that they could deal with their compatriots.