Guo Jingming's novel, Fantasy City, was based on the fantasy elements of ancient Chinese myths and legends. Its central idea was to explore human nature, love, power and fate. In the novel, there was a complicated emotional relationship between the protagonist, the evil god of fire cloud, and the human princess, Nereus. The evil god of fire cloud had an irresistible attraction to the beauty, courage, and purity of human beings, while Nereus fell in love with him because of his gentleness, kindness, and affection. However, in the face of power and power, love was insignificant. The evil god of fire cloud finally chose power and Nereus lost his life. The novel also touched on topics such as human nature, morality, and values. The evil forces represented by the Fire Cloud Evil God emphasized power and desire, while humans showed courage, kindness, and justice. In the novel, the author emphasized the contradiction between good and evil in human nature and the importance of moral choice by showing the confrontation between human beings and the evil god of fire cloud. The theme of City of Fantasy was about power, love, humanity, fate and other philosophical issues. It explored the nature and values of human beings through a fictional fantasy world.