Chuzhou or Chu Prefecture (楚州) was a zhou (prefecture) in imperial China seated in modern Huai'an, Jiangsu, China. It existed (intermittently) from 581 to 1228.
Geography
The administrative region of Chuzhou in the Tang dynasty is in modern Jiangsu. It probably includes parts of modern:
References
Chu Prefecture (Jiangsu) Wikipedia(Text) CC BY-SA