Abstract: This article examines a core problem in the general field of borderland studies from the perspective of the Manzu /Manchu history: how do the changes in territoriality and identity interact with each other in borderland history. Thehistory and culture of the Manzu /Manchus has occupied a prominent status in the field of the Qing history during the past several decades. However，the Manzu /Manchus have often been overlooked in other fields，in particular in the fields of 20th-century China and the East Asian borderlands，in North American academia. This article，based on excerpts from my book entitled Remote Homeland，Recovered Borderland (University of Hawaii Press，2011)，analyzes the historical process by which the Manchus redefined their notion of homeland and reconfigured their ethnic and national identities in the late Qing.