How did Shanghai get its nickname "Shanghai"?

Shanghai, referred to as "Shanghai", is also called "Shen". About 6000 years ago, the west of Shanghai became land, and the east became land for 2000 years. According to legend, during the Spring and Autumn Period and the Warring States Period, Shanghai was once the fief of Huang Xie, the king of Chu, so it was nicknamed "Shen". During the Jin Dynasty in the 4th and 5th centuries A.D., residents in Songjiang (now Suzhou River) and coastal areas mostly made a living by fishing. They created a bamboo fishing tool called Hu, and because the river was called blasphemy at that time, the downstream area of Songjiang was called Hu, which was later changed to Shanghai.