The following examples could be used as reference for Net King's NP-type novels: The NP-type novels were literary works that contained NP-hard mode plots. They usually described the extraordinary abilities and wisdom of the protagonist when solving complex problems, as well as the intense conflict between him or her and the villain. In online novels, NP-type novels often appeared in role-playing novels (RPGs) because players usually needed to role-play according to given rules and clues and show their wisdom and ability to solve problems and achieve goals in the game. Therefore, the NP-type novels were literary works that were inspired by the Japanese manga and contained NP-type hard mode plots. Although this type of novel was not rare in online novels, they were usually popular because they could attract the attention of readers and show their imagination and creativity.