Zhēnzhōu

Zhenzhou was a chief's office in the northern Guizhou mountains, on the upper Furong River. Under the Yuan, the Zhenzhou Sining office was administered from Zunyi.

In 1363 Ming Yuzhen of Xia changed the Chinese character in its name; the Ming confirmed the Zhenzhou chief's office under the Yang clan of Bozhou in 1384. After Yang Yinglong's Bozhou rebellion was crushed in 1600, the Ming replaced the office with Zhen'an prefecture in 1601. In 1724 it was renamed Zheng'an to avoid the Yongzheng emperor's personal name.