Why did the rulers of past dynasties attach so much importance to river construction to ensure the smooth flow of Chuanchang River at any time? This is because this ancient river carries Huaiyang, which was the economic lifeline of all government agencies in the past. The main producing areas of Huai salt are Fan Gong Dike and Chuanchang River in the north and south. Without the high output of these saltworks, the tax revenue of Huai salt could not guarantee the government at all. The ancients said, "The lessons of the Huai River and the Huai River are half rented in the world". Taking the ten years of Shunzhi in Qing Dynasty as an example, the national tax revenue was 2128,000, while the Huaihe River salt tax revenue reached1197,000, accounting for 56.3% of the national salt tax revenue. In the third year of Kangxi, the Huaihe River salt tax revenue accounted for 64.5% of the national tax revenue, that is, in the eighth year of Jiaqing, the Huaihe River salt tax revenue still accounted for 40.8% of the national tax revenue. This shows how important the Huai salt producing areas along the Chuanchang River are in the whole country. No wonder local officials and salt officials in past dynasties have always regarded the restoration of the Chuanchang River and Yunyan Zaohe River as the top priority in their administration in order to keep the top flowers and create political traces. In Yancheng, romantic artists eulogized Chuanchanghe as the mother river, and Chuanchanghe watered the fertile fields and crops on both sides like the sweet milk of the mother. In He Lixia, Yancheng, Jiangsu Province, businessmen who have traveled around the world praised Chuanchang River as a "water corridor". When the land transportation was underdeveloped, it did play a special role in navigable water transportation. Some paranoid historians also curse that the Chuanchang River is a "river that runs through the intestines", which has drained the blood of salt-stove people in past dynasties. Salt farmers in Yancheng, under the harsh production and living conditions, produced glittering Huai salt with thin bodies, which were continuously transported out and replaced with glittering silver, and flowed into the pockets of salt merchants, officials and heads. In the past, salt stove people in Yancheng could only listen to the helpless voice of Lacrimosa Chuanchang River