Chapter 1561: A Rare Moment of Relaxation

Something's off. Besides these colors, there seems to be one more—black!

But that doesn't seem possible. Whether it's zombies or humans, through cycle after cycle of evolution, the anti-life substance within their bodies undergoes qualitative change, washing away its original impurities. Therefore, after evolving to Level 1, the Evolution Crystals of beings other than zombified creatures appear slightly yellow due to the compact density of their anti-life substance. For evolved living beings, the Evolution Crystal Cores are pristine and transparent in color.

For zombies that haven't evolved, however, their anti-life substance remains in its most primitive form, unaltered, and is blackish-red in color. When the apocalypse came, the rain that blanketed the world was black. If there were to be black Evolution Crystals, they would likely only be found in ordinary zombies. If such a crystal appeared inside a Level 9 zombie, that would truly diminish its value.