From Refugee to Emperor

Others can become emperors, princes, prime ministers, or even poor landlords in time travel. Why should I become a refugee? I'm not going to talk about being hungry for nine meals in three days, but you can't even get into the city? It's really good. I have thousands of years of knowledge and you won't even let me enter the city? Then I will be my own emperor and take charge of my own city. If you want to enter my city, you must follow my rules. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.