The copyright of a novel referred to the legal protection of the author's copyright after the creation of the novel. If the novel was adapted into a movie, TV series, animation, manga, etc., the author needed to obtain the authorization of the copyright owner before they could carry out commercial adaptation and distribution. There were three ways to determine the ownership of a novel's copyright: Original copyright: The original copyright refers to the copyright that the author had when he created the novel. If the author's original work was not publicly published, the original copyright was usually not protected by law. 2. The adaptation copyright: The adaptation copyright refers to the copyright owned by the author when the novel is adapted into other forms. If the adaptation rights owner adapted the novel into a movie, television series, or other works, he needed to obtain the authorization of the original copyright owner before he could carry out commercial adaptation and distribution. Derivative copyright: Derivative copyright refers to other works based on the original work, such as novels, movies, TV series, animations, etc. If the derivative work was authorized by the copyright owner, the author could also obtain the corresponding copyright protection. In the protection of novel copyright, authors usually take some measures to protect their own copyright, such as signing a copyright transfer agreement, registering the copyright, etc. These measures could not only protect the rights and interests of the author, but also provide legal protection for the commercial activities of the copyright owner.