The Female Lead Wants Me Dead? Then I Have No Choice but to Purge the Court Around the Emperor

I transmigrated into a novel aimed at female readers, and now I'm a general. It's just that this general's power and titles are a little too grand: Duke of Yan and Grand General Who Pacifies the North, with command over all the troops in Liaodong and the Sixteen Prefectures of Yanyun. Even now, I still marvel at how big-hearted the emperor is. Isn't this practically pushing someone to rebel? But just a few days later, the emperor passed away. The Crown Prince ascended the throne, and then, at Empress Liu Ruhua's urging, my power was gradually stripped away. The original owner didn't resist at all during the whole process. By the time I took over, I had no military authority left, only the eight hundred personal guards under my command