The material of a novel can be selected according to different types and topics. The following are some common topics and types of novel materials: History: Historical novels usually place the protagonist in historical events to explore the characters and events in history and show the society, culture, and humanity in the historical context. 2. Science fiction: Science fiction usually places the protagonist in a future world or universe to explore technological, human, and social changes. Fantasy: Fantasy novels usually place the protagonist in a fictional world to explore elements such as magic, myths, and fantasy creatures, as well as human nature and social changes. Reality: Reality novels usually place the protagonist in real life to explore the problems of characters, emotions, and social reality. Love: Romance novels usually place the protagonist in a love story to explore issues such as love, marriage, family, and interpersonal relationships. 6. Growth: Initiation stories usually put the protagonist in the process of growth and development to explore the growth and self-redemption of the character. War: War novels usually place the protagonist in a war scene to explore the changes of war, human nature, and society. The material of the novel can be selected according to different topics and types. However, it should be noted that the creation of the novel must be based on the author's own creative inspiration and imagination.