Serfdom 农奴制
Serfdom is the status of many peasants under feudalism, specifically relating to manorialism. It was a condition of bondage, which developed primarily during the High Middle Ages in Europe and lasted in some countries until the mid-19th century.
Serfs who occupied a plot of land were required to work for the lord of the manor who owned that land, and in return were entitled to protection, justice and the right to exploit certain fields within the manor to maintain their own subsistence. Serfs were often required not only to work on the lord's fields, but also his mines, forests and roads. The manor formed the basic unit of feudal society, and the lord of the manor and his serfs were bound legally, economically, and socially. Serfs formed the lowest social class of feudal society.