Hanshan county Cao Yun Town is the most prosperous. Cao Yun, a thousand-year-old town, is located at the southernmost tip of hanshan county, bordering Hexian County in the east, Wuwei in the south, Chaohu Lake in the west, surrounded by water on all sides, reaching Chaohu Lake and the Yangtze River, and is known as a water town and a country of Zeguo. During the Ming and Qing Dynasties, the market scale and prosperity of Cao Yun once ranked first among the eight towns in the north of the Yangtze River. Hanshan county, which belongs to Maanshan City, Anhui Province, is located on the north bank of the middle and lower reaches of the Yangtze River, in the middle and east of Anhui Province, and on the shore of Chaohu Lake. Total area 1047 km2. Hanshan has a history of 1300 years since the county was established in the sixth year of Tang Wude. It is the hometown of Wu Chu in the Spring and Autumn Period, known as the head of Wu and the tail of Chu. There are many tourist attractions in Hanshan, including Hanshan Taihu Mountain and Baochan, two national 4A-level scenic spots.