Fei Jie is an author about whom little public information is currently available. Only one work is known under this name: the history book An Illustrated Gazetteer of Modern Sino-Foreign Treaties. Judging from its title and its classification as a history title, the book focuses on the series of treaties signed between China and foreign powers in modern times, presenting the relevant history in an illustrated gazetteer format that combines textual narrative with visual materials. It thus belongs to a kind of historical reading that joins documentary scholarship with accessibility. Such a subject requires the author to be familiar with the basic outlines of modern Sino-foreign relations and to have a fairly systematic command of treaty texts, the circumstances of their signing, and their later impact. Because the database contains no biographical information about Fei Jie, details such as nationality, education, and professional experience cannot be verified; readers can only infer his approach to writing from this single work, which emphasizes using direct visual materials to support historical narrative so that readers may understand, through the mutual illumination of text and image, the origins and development of treaties as a central issue in modern diplomacy. Whether he has other publications or what research he has long pursued awaits further public information.