C115 Living dead

"Ever since the creation of the Taoists, there has been a theory of righteousness and evil. The Taoist Maoshan belongs to the righteous path, and the evil path is mostly taken by rogue cultivators. Their actions are both righteous and evil, and the living dead are the product of these evil ways." Su Min explained.

"Ugh ?" But I still don't really understand what it is