Xu Prefecture (Henan)

Xuzhou or Xu Prefecture (許州) was a zhou (prefecture) in imperial China centering on modern Xuchang in Henan, China. It existed (intermittently) from 581 to 1913.

Geography
The administrative region of Xuzhou in the Tang dynasty is in central Henan. It probably includes parts of modern:
 * Under the administration of Xuchang:
 * Xuchang
 * Xuchang County
 * Yanling County
 * Changge
 * Under the administration of Luohe:
 * Luohe
 * Linying County
 * Wuyang County
 * Under the administration of Pingdingshan:
 * Wugang
 * Under the administration of Zhoukou:
 * Fugou County