Introduction from the tidal flat to the city: From the tidal flat to the city introduces tourists to the history of the city in Yancheng area that was prospered by salt: Yancheng area has a lake in the west, across the Huaihe River in the north and the Yangtze River in the south, with a coastline of 582 kilometers. Covering an area of 14,983 square kilometers, the Chinese ancestors came here to ignite the fire of civilization more than 5,000 years ago and created the history of "boiling the sea into salt"; in the fourth year of Yuanshou, Emperor Wu of the Han Dynasty (119 BC Year), an important town for cooking salt, Yandu County, was established here, and it was first called Yancheng in the seventh year of Yixi in the Eastern Jin Dynasty (AD 411). Through the development of the Sui, Tang and Song Dynasties, it became a famous sea salt city - the production of Huai salt. A prosperous place dotted with centers and villages and towns; floods, wars and oppression in the late Yuan Dynasty forced the salt people led by Zhang Shicheng to launch an uprising; with the economic recovery and development in the Ming and Qing dynasties, sea salt production methods and management forms have undergone new changes and developments , the production and marketing of Huai salt entered a golden period in history; in the early Qing Dynasty, Funing and Dongtai counties appeared around Yancheng, and unique local cultures were nurtured in philosophy, literature, calligraphy and painting, acrobatics, drama, etc.