Chapter 1 traces the experiences of Batu-Temür, his wife, their sons, and some 5,000 followers, who in 1405 migrated from the Mongolian steppe to the northwestern corner of the still-new Ming dynasty. In recognition of the military contributions of Batu-Temür and his sons, and their steadfast loyalty on refusing to join a local Mongolian insurrection, the Ming emperor granted the family a series of high-level military posts, gifts, honorary titles, a Chinese surname (Wu), and eventually investiture of Batu-Temür as Earl of Gongshun, a title that his descendants would hold until the mid seventeenth century. The Wu family’s experiences show both the Ming dynasty and recently arrived immigrants actively attempting to advance their interests in a time of rapid geopolitical change.