Through generations of political, economic, cultural, and social interactions, deep fraternal bonds have blossomed between the Tibetan people and their neighbors—the Han, Hui, Tu, and Mongolians. Together, they have woven a tapestry of exchange and integration, enriching the history of the Chinese nation and exemplifying the beauty of peaceful coexistence on the Plateau. This book delves into the historical and contemporary dimensions of these interethnic relationships, revealing the genuine sense of brotherhood forged through their interactions. It examines the historical evidence of their interactions and integration in areas like residence, livelihood, daily life, social structures, and marriage customs, offering a microcosmic view of the history of interethnic exchanges and integration within the Chinese nation.