Go to the Three Kingdoms and Become the Emperor's Sworn Brother

The protagonist looks down on the Sima family because they usurped the throne. This is not a matter at all. The biggest historical crime of the Sima family is to cause the Five Husbands to ravage China. The people of the Central Plains were wiped out and the Han people were roasted and eaten like sheep. This is the sin of the Sima family. In the late Eastern Han Dynasty, the national power was so poor that every warlord on the border would beat these foreign races, such as Ding Yuan in the early days and the family of Gongsun Du of Liaodong and Gongsun Zan of Youzhou. What happened to the Ma family in Liangzhou in the Jin Dynasty? When the emperor of the Jin Dynasty heard that people were starving to death, he actually said the strange saying "Why not eat minced meat"? Therefore, if I come to that era, I will definitely try to kill the Sima family (not to mention that I have a pistol). I would rather rule the world by myself, then kill most of the surrounding foreigners and assimilate the rest.

I have always wanted to read a novel about being loyal to the country and not being an emperor. This book satisfied my thoughts, I just hope it doesn't end badly.