China is a vast nation comprised of hundreds of distinct ethnic communities, each with its own language, history, and culture. Today the government of China recognizes just 56 ethnic nationalities, or <i>minzu,</i> as groups entitled to representation. This controversial new book recounts the history of the most sweeping attempt to sort and categorize the nation's enormous population: the 1954 Ethnic Classification project (<i>minzu shibie</i>). Thomas S. Mullaney...