Nansheng is a fictional dynasty, its existence is only the background set in literary works or film and television works, and there is no historical prototype. The name of this dynasty is to increase the mystery or artistry of the works, but it has no real historical background. Lu Yuan is the heroine in Song of Acacia, an important figure in the book, with her own unique personality and destiny. They are not real characters, but the images and stories are designed to promote the development of the whole plot and let readers better understand and feel the relationship between emotions and characters in this fictional world.