There are ten papers on the borderland and ethnic minorities of China compiled in this book, centering on ethnic interactions and cultural writing. These papers examine activities of Han Chinese in the borderland primarily through historical data and documents such as diaries, poems, local histories, jottings in foreign lands, as well as records of field investigations. The timeline of the book ranged from the Qing dynasty to the early Republican period. Additionally, topics of the book include the conducts of Han administrators governing the borderlands, their description to the space, people, cultures of these foreign lands, and personal identity and prejudice thus revealed, as well as the failures and frustration of the administrators who worked in the period of transition from “borderland administration” to “foreign affairs”. This book is full of diversities in study areas, materials, topics, and academic backgrounds of the authors. Each paper deals with a particular problem of a period and an area. Integrating with one another, these papers reflect the alteration of relations between the core and the frontier, i.e., the crux of the formation of the territory and ethnic groups in modern China.