Cause of Darkness

If it wasn't external, was it locally produced?

"What do you mean?"

Shen Ying took a bite of a fruit and turned to look at them. "You two have never examined the Spirit Qi of this world?"

"Spirit Qi?" Lonemoon paused, subconsciously releasing his divine perception. "What has this got to do with Spirit Qi…"

Wait a moment!

He stopped midway in his speech again, because not only did he sensed Spirit Qi, he also realized that the surrounding Spirit Qi wasn't weak, not inferior compared to those worlds that with abundant Spirit Qi in their plane. But they were in a sea of darkness. In theory Spirit Qi was the purest, it cannot be mixed with other auras, not to mention Yin Qi, demonic aura, the dark auras, they repel each other. Even when they were in Void Land, while all sorts of energies were mixed together, Spirit Qi also repelled them, so it wasn't rich.