Romance novels usually contain some romantic elements such as love, misunderstanding, encounter, separation, etc. At the same time, they may also add some fantasy, science fiction, or martial arts elements to increase the interest of the novel. The common titles of romance novels were " Why the Silent Flute,"" A Smile Is Alluring,"" Flowers Are Not Flowers, Fog Are Not Fog,"" The Imperial Concubine,"" The Concubine's Daughter Is Poisonous,"" The Imperial Concubine: The Emperor, I Want to Destroy You," and so on.