For 250 years, the Turkic Muslims of Altishahr--the vast desert region to the northwest of Tibet--have led an uneasy existence under Chinese rule. Today they call themselves Uyghurs, and they have cultivated a sense of history and identity that challenges Beijing's official national narrative. Rian Thum argues that the roots of this history run deeper than recent conflicts, to a time when manuscripts and pilgrimage dominated understandings of the...