Not only Zhou Yan, but Zhou Neng, Yan Ruxin, and Hua Ru Xi, all in the Sea of Suffering Realm at the Twelfth Layer, were doing the same.
They didn't kill the Demon Hearts; instead, they watched all around, paying attention to the team's progress and dangers. It could be described as a guardian-like battle meant to sharpen the team's growth.
This display was heartening, making Zhou Yan look at them with new eyes.
After all, some of these Demon Hearts were at the Eleventh and Twelfth Layers of the Sea of Suffering Realm. These Demon Hearts were greatly beneficial to Zhou Neng and the other three. As long as they killed enough, their realm would advance further.
Wasting energy this way and helping other members progress, delaying their own cultivation, this seems like a foolish move, yet it is an act of selfless devotion.
Zhou Yan admired such behavior greatly. If the Human Clan could all be like this, how could they not become stronger?
