Misunderstanding, I'm Really Not a Villain

Li Xiu traveled to the world of cultivating immortals and became a pawn of the unknown sect. He received a hell-level mission at the beginning. Let yourself, the cannon fodder, sneak attack the founder of the first sect. Let's not consider the feasibility of the task for now. Even if he really completes his mission and seals the old lolita who has lived for a thousand years... Wouldn't that mean everyone in the world is the enemy? What? In order to thank Li Xiu for eliminating his powerful enemies for the demon clan, Demon Lord wanted to betroth his nine sisters to him? Absolutely no, even an iron-clad waist can't stand it!