Fierce Sword in the Snow: I Don't Hate Xu Xiao, I Only Kill Li Yang

[Extended world view in the snow: Machiavellian strategy + martial arts + proclaiming emperor] My name is Jiang Zhi. In the year when Western Chu fell, my sister Jiang Si and I packed up and moved into the Northern Liang Palace. My sister is a swordsman, my brother-in-law is the best in the world, and the background board is completely full. The whole world revolves around Xu Fengnian, and everyone says he is the destined protagonist? Stop it! Life is not a one-man show. Is Xu Fengnian the protagonist? I was the first to refuse! Let's just say, who is not the male protagonist in his or her life?