Shanghai is the fief of Wu Zixu. Wu Zixu was sealed in this place, so Wu Zixu was later called "Xu Shen". And personally planned to dig Suzhou River. Of course, later Wu perished, and its territory returned to Chu. More than a hundred years later, Huang Xie, the king of the Spring Shen Dynasty, also changed his fief from Huaibei to Jiangdong, a rich city. The fiefs of Chun Shen Jun included Changzhou, Wuxi, Suzhou and Shanghai. Wu Zixu was very sad. Mingming Zongzi is to commemorate Wu Zixu, but it is remembered as Qu Yuan by later generations. It was clear that Shanghai was the fief of Wu Zixu, but later Shanghainese recorded it on Chun Shenjun's head, making Chun Shenjun a city god.