Public information about Yin Yi is limited: his dates of birth and death, nationality, and English name are not clearly recorded, and the only confirmed fact is that a single work, Shiyi Shu (The Book of Shi Yi), survives under his name. In the library's classification the book falls under historical reading, suggesting that its content centers on historical figures, events, or source materials and belongs to narrative and textual scholarship rather than literary creation or theoretical writing. On the strength of this one work alone, it is difficult to sketch Yin Yi's writing as a whole or to judge the specific features of his source selection, use of historical materials, and narrative method. Readers of Shiyi Shu should therefore examine the book's structure and the historical matters it covers, noting which parts compile earlier accounts and which represent the author's own judgments. Overall, Yin Yi remains an author known in bibliographic records through a single historical work, whose value awaits further discovery of materials and textual study.
