Where is Chuzhou in the Tang Dynasty now?

Today's Huai 'an area was not called "Huai 'an" in the Tang Dynasty, but was bounded by the Huaihe River. Huainan area is under the jurisdiction of Chuzhou and Shanyang County (now Chuzhou District), and its jurisdiction includes Qinghe District, Qingpu District, Chuzhou District, Hongze County, Huaiyong District of Xuyi County and the western part of Jinhu County. In addition, today's northern Yancheng is also under the jurisdiction of Chuzhou. Huaibei area is under the jurisdiction of Sizhou, located in Suyu County (now suyu district, Suqian City), and later moved to Linhuai County (now Xuyi County), including Huaiyin District, Lianshui County and Huaixi District of Xuyi County. In addition, Suqian, eastern Xuzhou, Wuhe, Anhui and today's Sixian are also under the jurisdiction of Sizhou.