Commoner Rises to Become Emperor

I'm afraid the writing will be unreliable if it's purely imaginary. I hope the author himself will first give a solid set of logic for this era (the end of the feudal country). For example, at the end of the Ming Dynasty, what was the officialdom and the gentry like, what was the relationship between the monarch and his ministers, whether power was centralized, what was the situation between civil and military forces, what was the strength of the military system in various parts of the country at this time, whether taxation was going smoothly, to what extent land annexation was, whether prices were reasonable, and what was the situation of the people. Another example is why the Song Dynasty did not prohibit land annexation. Peasant uprisings were the most common in all dynasties, but they hardly harmed the country. The size of a country must be related to each other and have a practical logic of the times. Come on