My Rebellion Was Successful, and the Emperor Is Actually My Fellow Countryman

I accidentally traveled through time and became a general who guarded the frontier and had great achievements. After conquering the Xiongnu royal court and conferring the title of Xu, the emperor of that day sent me an imperial edict, ordering me to be a simple servant and return to the capital to receive the reward. I led 800 heavily armored cavalry to surround the Jinluan Palace. I asked the emperor what he wanted to do. The emperor actually took out one from his arms!