Niu Wangxiu is an author whose biographical details are limited in publicly available sources. At present, only two works are known under this name: the two volumes of the social novel Gu Sheng (Remnants of the Ladle), an upper and a lower part. From the surviving bibliographic information, Gu Sheng is classified as a social novel and is divided into two volumes, suggesting a focus on social manners and the conditions of human life, in the tradition of fiction that observes society and human affairs. Because no reliable records exist for birth and death dates, native place, education, or the circumstances of composition, the author's place and influence in literary history cannot yet be properly assessed, and personal experience apart from the works remains untraceable. On the available evidence, Niu Wangxiu's literary profile is presented mainly through Gu Sheng, which allows readers to observe the author's narrative orientation and choice of subject matter. The date of composition, textual history, and later reception of Gu Sheng likewise await further verification. Given the limited materials, this entry offers only an objective record and makes no speculative additions.