美国 现代美国
Internationally renowned expert on Far Eastern History, City University of New York Distinguished Professor and professor of Columbia University, an expert on the history of China and Central Asia, the Far East and throughout Asia, the spread of the art in the West has played a positive role. His life himself, and mainly focused on the study of Mongolian history. Works are: "Kublai Khan and his world empire," "Yuan and Ming Dynasties Jurchen", "1368 China and Central Asia since the" other.