Equal-field system

The equal-field system (Chinese: 均田制度; pinyin: Jūntián Zhìdù) or land-equalization system was a system of land ownership and distribution in China used from the Northern Wei dynasty to the mid-Tang dynasty.

By the Han dynasty, the well-field system of land distribution had fallen out of use in China though reformers like Wang Mang tried to restore it. The equal-field system was introduced into practice around 485 AD by the Emperor Xiaowen of Northern Wei under the support of Empress Dowager Feng during the Northern and Southern dynasties period. The system was eventually adopted by other regimes, and its use continued into the Sui and Tang dynasties. During the Northern Wei dynasty, the government implemented the equal-field system (jūntián zhì, 均田制) in conjunction with the Three Elders system (sānzhǎng zhì, 三长制). This policy weakened the power of local hereditary aristocratic clans (shìjiā ménfá, 世家门阀), curtailed widespread land annexation, and strengthened the emerging landlord class based on self-cultivating farmers (zìgēng nóng, 自耕农).

As the landlord economy expanded, however, new waves of land concentration re-emerged. By the end of the Wu Zhou period, the equal-field system had largely collapsed. In the first year of the Jianzhong era (780) under Emperor Dezong of Tang, the policy was officially abandoned.

The system was later emulated by other East Asian countries. In Japan, it inspired the Handen-Shūju system (班田収授制), while in Korea, the Joseon Dynasty implemented the Jeongjeon system (丁田制). The latter was revived under King Jungjong (中宗) following the reforms proposed by statesman Jo Gwang-jo (赵光祖).