About 6,000 years ago, the western part of Shanghai was already a landmass. During the Spring and Autumn Period and the Warring States Period, Shanghai was the fiefdom of Chun Shenjun, so it was also called "Shen". During the Jin Dynasty, because the fishermen created the fishing tool "Hu", the place where the river flows into the sea is called "Hu", so the lower reaches of the Songjiang River are called "Hu", and then changed to "Shanghai", so Shanghai is referred to as "Shanghai". In the twenty-ninth year of Yuan to Yuan (1292), Shanghai Town was divided from Huating County and Shanghai County was established, marking the beginning of the founding of Shanghai.