Gu Guichen is an author in the field of Chinese youth literature, about whom very little public information is available. Their real name, year of birth, and detailed life story are unknown, and no commonly used English name has been recorded. The database contains one work by this author, Goodnight, My Love. Judging from this representative work and its usual classification, Gu Guichen writes for young readers, with themes close to emotional and coming-of-age experiences. The title itself suggests night, intimacy, and tender farewells, hinting that the work may focus on delicate emotional description and the inner struggles of its characters. Given the limited material, it is difficult to offer a complete assessment of the author's creative development, stylistic evolution, or literary influence. The available information only indicates that Gu Guichen writes in the direction of youth literature and came to readers' attention through Goodnight, My Love. Further public information is needed to clarify later writing and the total number of works.