Chapter 574: Chapter 574: 501 Light Wave Theory and Double-Slit Interference Experiment_2

So most of the time, they were just delivering provisions.

Aira couldn’t help frowning, even so, they shouldn’t have all died out.

“It was the Dead Spirit Master,” the Mokai Priest said with a trembling voice. “Twenty years ago, the Dead Spirit Master invaded this Divine Realm and ruthlessly slaughtered tens of millions of people, turning them into dead spirits…”