Nine-grade mathematics in Wuhe County, Bengbu, Anhui Province Beijing Normal University Edition. According to relevant data, except for the A version of People's Education Publishing House, most cities in Anhui Province use the Beijing Normal University version in five cities in northern Anhui (Bengbu, Fuyang, Bozhou, Huaibei and Suzhou). Wuhe County, which belongs to Bengbu City, Anhui Province, is located in the middle and lower reaches of Huaihe River in the north of Anhui Province, bordering Sihong County in Jiangsu Province in the east, mingguang city County and Fengyang County in Chuzhou City, Anhui Province in the south, Bengbu City and Guzhen County in the west, Sixian County and Lingbi County in the north, with a total area of 1428.5686 square kilometers.