Zhènxī

Zhenxi lay in the upper Daying River country west of Tengchong. The Yuan established Zhenxi Circuit in 1276, with its seat near the river valleys of Yingjiang. The Ming made it a prefecture in 1382 under the authority of Luchuan. As the court reorganized the borderland, the old prefecture was replaced in 1403 by the Ganya chiefdom. Its changing titles reflected the shifting power of local rulers and the dynasty's attempts to govern the region.