Yuncheng City in China, referred to as "Yun", was called Hedong in ancient times and was also known as Phoenix City. It faces Shaanxi Weinan and Henan Sanmenxia across the Yellow River in the west and south respectively. Yuncheng has a long history. In ancient times, there are historical legends such as Shun plowing Mount Li, Yu chiseling the Dragon Gate, Hou Ji farming, Lei Zu raising silkworms, and the Yellow Emperor fighting Chi You.