Gu Zhen Ren
In Fang Yuan’s previous life, he escaped southern border and arrived at central continent, becoming a Gu Immortal and after creating the bloodwing demonic sect, this woman was his mortal enemy. They had at least a few hundred battles, and eventually, Fang Yuan allied with numerous demonic path Gu Immortals and attacked Hu Immortal blessed land together, paying a painful price to kill her. This kinda makes me want fang zheng to get that inheritance because his incompetence will spoil it :D