Even after reading to the sixth floor, Zhang Xuan was still unable to find a solution for Wei Ruyan's Innate Poison Body. According to the introduction on Poison Master Bai in the Library of Heaven's Path, it was reflected that the other party was a 7-star pinnacle poison master from the headquarters. Given so, the other party had access to knowledge greater than what was contained in this Hongyuan Empire Poison Hall, so he might know some secrets regarding the matter.
Besides, it was normal for a soul to suffer from memory loss if it were to be fragmented or exist for too long. Putting aside everything else, Vicious was in the same state as well.
This point would serve to bring greater credibility to his argument, making it easier for him to win the trust of the other party.
A little late, this is the chapter for yesterday night. I had an event this morning where I had to make a speech (kind of) so I ended up spending the night memorizing it. Anyway, I will get working on the chapters as soon as I get time.