Zhènníng

Zhènníng lies west of Ānshùn in the limestone highlands of Guizhou. Zhènníng Zhou was established under the Yuan in 1351, though its original seat lay to the south of the later town. During the Ming, its administration was attached at different times to Pǔdìng Guard and to the provincial authorities. In 1532 the seat moved to the walled town of Ānzhuāng Guard, the site of Zhènníng thereafter. The zhou became subordinate to Ānshùn Prefecture in 1602 and retained that relationship under the Qing.