The Qing Empire’s military drew from the traditions of bodyguards and booty warfare in North-East Asia (primarily what is now southern Jilin province) in the late sixteenth century. The foundations of imperial expansion were built during the long war with Ming China, from 1618 to 1644, which allowed the Qing to absorb the central features of Ming military technology. Patterns of human management and technology application established in this period persisted over the next forty years as the Qing completed their conquest of China and Taiwan. After 1685, Qing expansion spread out to Mongolia, Qinghai, Tibet, and what is now the province of Xinjiang. These wars, against less densely populated, sometimes nomadic zones, changed Qing campaigns significantly. By the nineteenth century, the century and a half of focus on the continental frontiers left the Qing poorly prepared for seaborne challenges, and from some technologies that the Qing had previously regarded as less relevant to their military needs.