Hai'an (also known as Zishi) is a city under the jurisdiction of Jiangsu Province, located in the eastern Jiangsu Province of Suzhong area, is "the hometown of Chinese poultry eggs" "the hometown of Chinese silk" and so on. Hai'an belongs to the north subtropical marine monsoon humid climate area, mineral resources are oil, clay, mud carbon, etc., the domestic attractions are Qizhan Qijie Monument, Qingdun Cultural Site, Han Zishi's former residence, etc. Hai'an has a long history and is the source of Nantong Jianghai culture. The excavation and research of Qingdun site in Nanmo showed that as early as 5,000 years ago, the Neolithic era, Hai'an City in the west of the human habitation.