Travel Through the Magical Middle Ages as Tongliao Khan Rebuilds Rome

I traveled to the magical medieval version without any possessions. Fortunately, I have the Kingdom Storm system. Become a mercenary and achieve military exploits to become a lord. Roman Orthodoxy is Eastern Rome, Third Roman Russia, Russian Orthodoxy is in Tsarist Russia, Tsarist Russia is Orthodox Golden Horde, Golden Horde is Mongolia, Mongolian Orthodoxy is in Monan, Monan Orthodox Horqin, Horqin District is in Tongliao, and Roman Orthodoxy is in Tongliao. As the Khan of Tongliao, I am of course Roman orthodox. The Aryan barbarians can sit on the throne of Rome, why can't we Han people sit on it? Today, if I go to Rome and seize the throne, wouldn't it be great if one of my brothers becomes emperor and the other pope? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.