However, by the four wars of Jinshin waran (the Bunroku War in Korean), the Japanese Invasion in 1597, the First Manchu invasion of Korea and the Second Manchu invasion of Korea, the "office land" (chikchon) system collapsed and during the late seventeenth century, kyuso or tonsho which were given the privilege of tax exemption from the nation were set up and the constraints on the purchase and sale of land were increasingly loosened and the shoen system culminated.
だが、16世紀末から17世紀初めにかけて起きた壬辰倭乱・丁酉倭乱・丁卯胡乱・丙子胡乱の4つの戦乱によって職田制が崩壊し、17世紀後半には免税特権を国家から与えられた宮荘や屯庄が設置されるとともに土地売買の制約が一層緩くなり、荘園制度は最盛期を迎えた。