Introduction to the Huainan Palace of the Han Dynasty: The Huainan Palace of the Han Dynasty is located on Bagong Mountain and covers an area of ​​4,500 square meters. There is a bronze statue of Liu An in the palace, as well as promotion diagrams and alchemy diagrams. There are 60 stone murals inlaid in the galleries around the palace, describing Liu An's life story and the scientific and technological achievements, mythological stories, historical stories and Chinese stories in the huge work "Huainanzi" written by Liu An's disciples.