Doujinshi and film doujinshi could be signed, depending on the website's contract policy. Some websites might be more inclined to sign authors who write doujinshi or film doujinshi because these works often have unique creativity and style. However, other websites might pay more attention to the quality of the work, plot, and character creation. To be signed on, the author had to submit a detailed outline and creative plan, as well as demonstrate their writing ability and talent. At the same time, the author also had to submit a sample work to prove that his work had feasibility and development potential. During the signing process, the website may conduct a series of reviews and evaluations on the author to determine whether the work meets the standards and philosophy of the website. If the author could pass the review, they could obtain the authorization and copyright of the website and publish and distribute their works on the website.