Where did Bagong Mountain come from?

The name "Bagong Mountain" comes from the myth that Liu An, the king of Huainan in the Western Han Dynasty, learned Taoism and became immortal. In the Western Han Dynasty, Bagong Mountain belonged to Huainan. Liu An, son of Emperor Gaozu Li and uncle of Emperor Wu of Han Dynasty, was named King of Huainan. Liu An attached importance to literature and talents, recruited more than 3,000 scholars from all over the world, and compiled the famous book Huai Nan Zi. He compiled the twenty-four solar terms for the first time and invented tofu, a world-famous food. Among them, Zuo Wu, Li Shang, Su Fei, God bless, Maubere, Baylor, Wu Bei and Jinchang, who are most appreciated by Liu An, are listed as the eight great heroes. Liu An and his disciples often wrote books, studied astronomical phenomena, compiled calendars and refined cinnabar in Bagong Mountain. According to legend, one day, Liu An and Bagong were made into elixirs, and they lived forever after taking them. There is a record in Taiping Yuhuan: "In the past, the king of Huainan and Bagong climbed mountains and buried gold here, and ascended to heaven in the daytime. The rest of the medicine is in the container, and chickens and dogs lick it, and none of them will die. There are chariots and horses behind him, which are still there today, so the mountain is named after Bagong. " This is also the origin of the allusion that "one person gets the Tao and chickens and dogs ascend to heaven".