Yan Sun is a Professor of art history at the Gettysburg College in Pennsylvania. Her research and publications focus on the rise of regional bronze cultures in north China and the interplay between material culture, identities and power of Bronze Age China. Her recent publications include two bronze catalogues Shang date Bronzes from Hanzhong (2006) and Bronzes from Northern Shaanxi (2009) (both co-edited with Cao Wei), and studies on material culture and social identities in Western Zhou's frontier (2013) and gift giving and social network in Western Zhou regional state Yan (2017).