Jiuding Secret Treasure

During the Republic of China, an evil beast attacked people in the suburbs of Xi'an. Is it the legendary unicorn? What is the water monkey recorded in various places among the people? Why is the ancient mythical beast Xuanwu considered to be a fusion of a turtle and a snake? What is the subtlety of the machine technique two thousand years ago? What kind of terrifying existence is the giant earth dragon centipede recorded in the "Book of Materia Medica"? What is the purpose of King Yu gathering all the copper from the world to cast the nine tripods... All the truth is in "The Secret of the Nine Tripods"