Gaohua ChenChen Gaohua is Director at the Institute of History of the Chinese Academy of Social Sciences, and was the Director of the Research Center of the Song, Liao, Jin, and Yuan Dynasties. He is the author of The Oversea Trade in the Song and Yuan Dynastie, The Capital City of the Yuan Dynasties, Research of the Yuan Dynasty, and Chen is the co-editor of the Cambridge History of China (The Qin and Han Dynasties) Read More Read Less