What is the origin of Yancheng place names?

In the seventh year of Yixi in the Eastern Jin Dynasty (4 1 1), Du Yan changed her name to Yancheng because there were salt fields around the city.

In the fourth year of founding ceremony, the Emperor of the Western Han Dynasty (1 19), the court set aside a part of the eastern part of the ancient Sheyang County near the Yellow Sea to set up a separate county. Because there are salt pavilions and salt rivers everywhere, it was named Du Yan County. At that time, there was no cure center in the county, which was managed by Sheyang City (now Baoying County).

During the Three Kingdoms period, Cao Cao ordered Jianghuai people to move westward, waste salt and blaspheme the county, and restore the county in the Western Jin Dynasty. In the seventh year of Yixi in the Eastern Jin Dynasty (4 1 1), Du Yan changed her name to Yancheng because there were salt fields around the city.

Extended data:

Yancheng City is located in the transitional zone from the north subtropical zone to the warm temperate zone, generally bounded by the main irrigation canal in northern Jiangsu, with a subtropical climate in the south and a warm temperate climate in the south, which has transitional characteristics.

The climate is greatly influenced by the ocean. Compared with western Jiangsu at the same latitude, the temperature in spring is low and rises late. The temperature drops slowly in autumn and is higher than that in spring.

The annual precipitation is also significantly higher than that in the western part of the province. The monsoon climate is obvious, and the winter is affected by the cold air mass in Eurasia, with northerly winds and cold weather; In summer, influenced by the Pacific subtropical high, southerly winds prevail, with hot weather, warm and humid air and abundant rain.

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