Land is considered to be the earliest and most primitive form of state-owned assets. In the primitive society, people cultivated the land collectively and distributed it equally, so that land was naturally viewed as collective property, which was the origin of the well-field system; after the country came into being, the public ownership of land continued and was transformed it into the state ownership; the state-owned land meant the king-owned land, and the two were mixed into one because the king was considered to be the representative and symbol of a country (Tao in Acad Mon 3:52–54, 2000).