Zhou Yuxiong is the name traditionally attached to the author of the ancient Chinese text Yuzi (The Book of Master Yu). Almost nothing of his life is recorded in surviving sources: his nationality, dates of birth and death, and English name are all unknown, and the available public information is limited, making it difficult to establish his deeds or scholarly lineage. What can be confirmed is that one work by him is held in the collection, namely Yuzi, commonly classified under Eastern philosophy. Judging from its title and attribution, the book belongs to the pre-Qin masters (zhuzi) literature and deals largely with statecraft, self-cultivation, and conduct in the world, in a concise and archaic style characteristic of early philosophical discourse. Because the original text was scattered and later reconstructed by editors, the present version is not the work of a single hand or period, and readers should consider its textual history. As a surviving masters text of limited circulation, Yuzi remains useful for understanding the pre-Qin intellectual landscape and the compilation and recovery of such literature, and it reminds researchers of the layered relationship that may exist between an author and a text.
