I, Jin Yiwei! but This Is a Strange World

(No system, natives from another world, plot flow, single female protagonist, strange attacks, court intrigues) "Aren't you tired after killing so many people and so many demons?" "I am very content to be alive until now." Ying Shuang closed his sleeves with both hands and slowly squinted his eyes. Having reached the pinnacle of his life, he glanced past the person in front of him and looked at the mountains of corpses and seas of blood he had created with his own hands along the way. The dynasty building will collapse, and external evils will continue I'm afraid all those who are gentlemen will die. You just want to survive, so what if you are a villain?