The building can be traced back to the Wei and Jin Dynasties. In the Eastern Jin Dynasty, it was called Liaohua Prefecture, and later it was called Zhongzha and Caochuan. At the end of the Eastern Han Dynasty, Cao Wei led an army to attack Wu and wanted to "cross the Chaohu Lake four times", so he excavated the ruxu River from Chaohu Lake to the east. In order to counter Cao Jun, Sun Quan of Soochow, relying on the mountain situation, set up two passes, Dongguan and Xiguan, about 10 km east of the transport tank, which made "Cao Cao's four crossings of Chaohu Lake unsuccessful". Water transport in water towns is not only the witness of historical changes, but also the grain and grass base of Wujun County, which constantly gathers popularity and accelerates the development of commerce and culture.
According to historical records, during the period of Wu Chiwu in the Three Kingdoms, Taoism established a concept of body in the town, and incense was once very popular. "Kangxi Hanshan County Records Volume 5" also contains: "Yuncao River, 80 miles south of the county." The Yuanhe (Prefecture) County Chronicle said: Jing Rebellion (in August of the second year of Taiqing, that is, in 548), Wang Heshang split his troops into Wuhu, and Hou Zijian and An Lushan defended the imperial transport, hence the name. "Accordingly, the earliest name of Cao Yun appeared in history, in the middle of the 6th century, that is, in 548, and it has been 146 1 year (that is, the name of Cao Yun Town began in the early Ming Dynasty).
According to the Records of Yu Sheng Di Ji and the Dictionary of Ancient and Modern Place Names, Cao Yun Town started in the Eastern Jin Dynasty and was called Cao Yun in ancient times, but it was changed to Cao Yun in the late Ming and early Qing Dynasties, and it has been used ever since.
At the end of the Eastern Han Dynasty (Jian 'an 17-22), Cao Cao destroyed Wu in the Northern Wei Dynasty and "crossed the Chaohu Lake". He once stationed troops in the Jianghuai area of Wu, Chao and Fei. In order to facilitate marching operations and transport military supplies to the commissary, Cao Bing immediately opened up Rushu Water (also known as Caohe River), in which sailboats shuttled. In the seventeenth year of Jian 'an in the Eastern Han Dynasty (2 12), Sun Quan of Soochow sent people to build a pass to block Cao, blocking the mouth of the ruxu River, and forming the East Gate to stop Chaohu Lake. Caohe transportation has become the only way for Wu Bing to advance and retreat.
Zhu Yuanzhang of the Ming Dynasty also faced the Yuan Army in this town.
In the third year of Emperor Kangxi of Qing Dynasty (1664), the Qing court sent troops to transport tanks and bronze doors. In the 12th year of Daoguang (1832), the Qing army camped in Cao Yun. Kitten recorded in the article "The Battle of Taiping Army in Dongguan": "In the third year of Qing Xianfeng (1853), in early October, Taiping Army sent six or seven hundred warships from Tianjing (now Nanjing) to attack the Qing soldiers stationed in Chaohu area, capture Dongguan, and transport water tanks through Yuxi River and Sancha River". Loyal Li Xiucheng's ministry, Hong Renda and He Yalin, also led eight thousand troops stationed in the town. There are still large and small ruins around the town. There are many places of interest in the town, such as Wanniantai, Dongyue Temple, Santaige, Zhengjue Temple, Xi 'an, Tong Yuan 'an, Shui Ge Pavilion, Guo Chao's tomb in Ming Dynasty, library building, Baiziqiao, Yanjiaqiao (soldier bridge of Cao Cao in Northern Wei Dynasty) and so on. In addition, there are Catholic churches, evangelical churches, Tongshantang, mosques, Wuji Road and other places for religious activities. These cultural relics and historical sites were built in the late Ming Dynasty, the Qing Dynasty and the early Republic of China, except Zhengjue Ancient Temple, which was built in the second year of Zhenguan in Tang Dynasty (628).
Wanniantai was built after the Revolution of 1911 19 17, located outside the north gate of Zhenda (now in the courtyard of Cao Yun Town). In the early years of the Republic of China, in order to commemorate the great revolution led by Dr. Sun Yat-sen, the shops in Cao Yun Town donated money to build this stage to show off the prosperity of the Republic of China for thousands of years. The splendid Wannian Platform is more than ten feet high, with two floors, carved beams and painted buildings, cornices and upturned corners, bronze casting on the top of the platform and wind chimes at four corners. In the center of the stage, the dragon grabs the pearl and hangs in the air. Throw a metal coin and you can roll, and the dragon will live. On both sides of the platform, couplets are inlaid, and at the top of the platform, there is a horizontal plaque with four characters of "Appearance Statement" written by the famous calligrapher Jie Bao. The building scale of Wanniantai is the largest in the market town stage of the province. Every festival or major gathering, the townspeople and neighbors flock to the stage, and the stage, drama or song are pleasing to the eye. This station was demolished on 1963 due to disrepair. Other places of interest have gone through vicissitudes, except for a few, most of them have disappeared.
The archways such as Xiaozi Square, Hanlin Square, Zhenlie Square and Jie Zhen Square in Zhenxi Street and Shangjie Street are magnificent, but most of them have been demolished. There are more than a dozen ancestral temples and many Huizhou folk houses in Ming and Qing dynasties in the town, with two-story brick and wood roofs, which are simple and elegant and full of vicissitudes.
Cao Yun Town enjoys superior natural conditions, with the Yangtze River in the east and Chaohu Lake in the west. Surrounded by Yuxi River and Niutun River, it has developed water transportation and is also the throat of Chaohu Lake. It is the only place where grain and other agricultural and sideline products go out of the river in Hefei, Shucheng, Lu 'an, Lujiang, Wuwei and Chaohu, and has always been a commercial center. Cao Yun Town is located in Yangliuwei, a "granary with mountains", across the river from Shangxiajiulianda University in Wuwei County, with sufficient grain sources. During the period of the Republic of China, Xiaomi City provided food sources for Wuhu City, one of the four major rice markets. In the early days of War of Resistance against Japanese Aggression, there were more than 50 grain stores in the town, and the largest grain store was Zhu's grain store founded by Zhu Bowen's ancestors. The main trading objects are grain merchants in southern Jiangsu, northern Jiangsu and Wuhu. The famous grain merchants at that time were: Xu Qingji, Zhang Meijia, Jin, Zhao Gongxia, Luo Yifeng and Lu. In the Republic of China 16, the descendants of Duan founded Sanyi Palace Square, with 50 employees and a daily output of 1 10,000 Jin of rice.