Which Ming and Qing banknote port is located at the intersection of the Weihe River and the Pi River into the Huaihe River?

Zhengyang, formerly known as Wei Ying, Yingkou, Shi Yang, Shi Yang and Shi Yang, is located at the intersection of Heying River, Pi River and Huaihe River in Anhui Province, China. It used to be an important land and water resource, but it withered due to the decline of traffic status. The west bank of Huaihe River is called Xizhangyang, which belongs to Yingshang County. The east coast is called Dongzhangyang, which belongs to Shouxian County. During the Ming and Qing Dynasties, there was a banknote pass, which was called Zhengyangguan. At the end of the Qing Dynasty, the city wall was built, and Zhengyangguan Town existed.

Historical ups and downs Zhengyang area is low-lying and full of water. Huaihe River first accepts Pi River on the right bank at Qinghekou, and then accepts Ying River on the left bank at Mohekou. There is a folk saying that "seventy-two waters belong to Zhengyang", and there are 124 tributaries of Huaihe River above Zhengyang. This place is not only a water transport hub of Huaihe River, but also a number of ferries, and land transportation extends in all directions, so it has become a battleground for military strategists and an important place for trade.

In the history of Zhengyang, it was mostly a place for marching, stationing troops and fighting. In the second year of Xiande (955), the later Zhou attacked Nantang and defeated Tang Jun in Zhengyang. In the Southern Song Dynasty, Dong Wenbing built a city on both sides of the Huaihe River in Zhengyang in the ninth year of Yuan Dynasty (1272) as a stronghold of the Huai War. In the seventh year of Xianfeng (1857), the Qing army and the Nian army fought fiercely in Zhengyangguan for half a year. Jin Guangzhu, the leader of Fengdaotai in Lu Qing, died in battle, and Zhang Lexing, the leader of the Nian army, made a desperate breakthrough.

During the Tang and Song Dynasties, the business of Xizhangyang was prosperous, and the business tax paid by Xining in the ninth year (1076) was more than twice that of Yingshang County. In the Ming Dynasty, East Zhengyang rose and merchants gathered, so it was called "the first town in Zhongdu" and "the first town in Huainan". In the eighth year of Chenghua in Ming Dynasty (1472), the Shouzhou Zhengyang Banknote Pass was established. Fengyang Customs Department was established in Zhengyang Town in Qing Dynasty to manage Zhengyang Customs and Linhuaihai Customs. Because of the gathering of salt merchants, Huaibei Zhengyang Salt Administration was established.

In the early years of the Republic of China, after the opening of the Jinpu Railway, Bengbu, located at the intersection of the railway and Huaihe River, rose, replacing Zhengyang as the transportation center in northern Anhui. Fengyang Customs Department moved to Bengbu; The monopoly of salt industry was abolished and the private salt trade was transferred to Bengbu. Anhui's political and business circles once planned the An (Qing) Zheng (Yang) Railway and the Bengbu (Hong Kong) Zheng (Yang) Railway, but none of them came true. During 1954, the Huaihe River flooded, and the low-lying Zhengyang Town was hit by the roof, resulting in a sharp drop in population. After 1958, reservoirs were widely built in the middle and upper reaches of Pi River, which led to the interruption of navigation and the depression of Zhengyang.