John W. ChaffeeJohn W. Chaffee is Distinguished Service Professor in the Departments of History and Asian and Asian American Studies at Binghamton University, State University of New York. He also directs the Institute for Asia and Asian Diasporas. He co-edited wit Professor Denis Twitchett Volume 5 of The Cambridge History of China: Sung China, 960–1279, Part 2 (Cambridge, 2015). Read More Read Less