Yin Prefecture
Yinzhou or Yin Prefecture was a zhou in imperial China centering on modern Hengshan County, Shaanxi, China. It existed from 563 to 1106. In the 10th- and 11th-centuries it was mostly controlled by the Tangut people as part of Western Xia or its precursor, the Dingnan Jiedushi. In 1081 it became territory of the Song dynasty.Geography
The administrative region of Yinzhou during the Northern Zhou is in modern Shaanxi. It probably includes parts of modern:
