Peter C. Perdue, China Marches West: The Qing Conquest of Central Eurasia. 752 pp., illus., maps. Cambridge, MA: Harvard University Press, 2005. ISBN 067401684X. $35.00. China Marches West is a massive and important book. It is richly researched, profoundly intelligent, sharply focused, and rich in its historiographical implications. It is also beautifully produced; both the maps and the illustrations are gorgeous.