When Wang Lin reformed his body from the River Styx Primordial Water and escaped certain death, it was still understandable if the others couldn’t fathom what just happened. When Xu Anda witnessed what just transpired, his eyes closed into slits as he thought to himself, "The River Styx Nirvana?! The most powerful spell of the River Styx Nirvana Mantra. However, it should only be effective as a Spell Of Rebirth after the formation of the River Styx Nirvana Dao Fruit!"
The founder of the Yellow Springs Satanic Sect, the River Styx Priest, was the second disciple of the Emperor of the Dead, and also Xu Anda’s senior. Even though both parties never really interacted with one another, Xu Anda was still well-informed about the details regarding the River Styx Nirvana Mantra.
