Many ancient texts that recorded the disaster that once plagued the entire world still circulate to this day, and Xu Changtian had naturally read some of them.
Therefore, he knew what these evil spirits were, and what these rifts were.
Just like how ink quickly diffuses through clear water, once a rift created by the corruption of evil spirits emerged, this strange blood fog would continuously erode and pollute everything within the space.
Of course, such erosion and pollution were concerning to the human race.
While the ghost fog spelled doom for the human race, it was paradise for demonic beasts and evil spirits. Those ancient evil spirits thrived in the environment of a rift.
With that in mind, Qin Weijiu sighed slightly,
"It's actually a secret realm breached by evil spirits, such a pity."
This rift's blood fog could corrupt spiritual herbs and various cultivation resources. If a cultivator used them directly without proper handling, they could become ghostified.
