A free and autonomous city
Because cities are generally located in the territory of feudal lords, lords, like controlling manors, arbitrarily levy taxes on urban residents, and even require residents to perform their obligations like tenants. Urban residents take various ways to resist and strive for the freedom and autonomy of the city. Common means are redemption of money and inability to struggle.
Urban resident status
Craftsmen and businessmen are the basic residents of this city. Many people were serfs before entering the city. Once they live in the city for one year and one day, they can get citizenship and enjoy freedom from now on. The Lord has no right to force them to become serfs again.
The rise of universities
/kloc-in the 0/2nd century, there was a new atmosphere in education and scholarship in western Europe, and the rise of universities was considered as the "most beautiful flower" of medieval education in Europe.
Basic college courses: grammar, rhetoric, logic, arithmetic, geometry, astronomy, music. After completing the basic courses, students study professional courses, including law, medicine and theology.