Late Ming Dynasty: Organizing Refugees into an Army

As a sociology graduate student in the 21st century, Shen Ze traveled to a small village in the eighth year of Chongzhen. The entire village was massacred until only fourteen people were left. He doesn't know how to make steel or make guns. He only knows one thing: looking at people, counting people, and organizing people. Starting from household registration, refugees were organized into villages, villages were organized into armies, and armies were organized into countries. He beat the rogues when they came, and he also beat the Tartars when they came. Many years later, he wrote a paper on a country.