Chapter 50: The Mysterious Pyramid_3

"Indeed, humanity has eliminated catastrophic creatures before, but it usually comes at a grievous cost, with about half the casualties incurred, and even then, it requires good luck, catching the catastrophic creature when it's on its last breath. As for the catastrophic boss-level beasts, that's even more unthinkable."

Li Xiaoyu's expression also grew solemn as she continued:

"Catastrophic creatures are still too far beyond our reach at present. Even though humanity once obtained a Soul Crystal from a catastrophic creature, unfortunately, according to the current pace of the Pyramid exploration, it will be decades, even nearly a hundred years before that Soul Crystal can be used as a key. Thus, that Soul Crystal was repurposed for another cause, as an energy reserve for fortresses."