The use of other people's characters and scenes in one's own novel depended on the theme and plot of the novel. If the theme of the novel was to protect the original, then the use of other people's people and scenes might be restricted. However, if the theme of the novel was plagiarism or imitation, then the use of other people and scenes was likely to be considered plagiarism. In the process of writing, one should always consider the theme and plot of the novel and make sure that their work does not have any similarities with other works. If you need to use other people's people and scenes, you should try to make sure that they are unrelated to the theme and plot and should be carefully considered and planned to ensure that they do not destroy the uniqueness of the novel.