Chapter 594: Chapter 596 Soul-Devouring Beast and Exorcising Sand!

This black crystal sand is truly bizarre. For normal cultivators, it is absolutely harmful and useless, but for spirits, it is extremely precious.

Being in this smoky environment will inevitably accelerate the growth of the spirit, making it an unparalleled remedy!

No wonder the notoriously expensive Ghost Bank agreed to exchange hundreds of thousands of valuable contracts for this crystal sand; it must be very useful to them.