Huai Salt Production Area: named because the Huai River runs across the Jiangsu Salt Farm. Jiangsu salt field is distributed in the north from the junction of Sulu embroidery needle river mouth, south to the mouth of the Yangtze River on this oblique narrow coastal zone, across the Lianyungang, Yancheng, Huaiyin, Nantong four cities in 13 counties, districts, covering an area of 653 square kilometers. Jiangsu coastal zone has the most extensive coastal mudflats, four seasons of climate conditions, suitable for sea salt production
Qingjiang in the Qing Dynasty resided in the Governor of the river, Qianjia due to the status of the river industry and the transportation center of the southern boats and horses and flourished for a while, the population of more than 500,000 people, and Ming and Qing Dynasty Huaicheng is the Governor of the Cao, Huaibei Salt Transportation Division, the residence of the House of Huai'an, the population of more than 300,000 people. The city of Qingjiang was characterized as a center of transportation, with a large number of sailors, porters and other laborers, while Huaicheng was the residence of rich salt merchants and scholars, after all, those who were in a position to do so had to live in the city. Economically and culturally, Huai Cheng in the Ming and Qing Dynasties