Studies on the history and culture in Xinjiang Studies of urban history and culture of China Studies in the history of public economics Studies in the hisory of natural sciences Studies in the history of modern science ; Studies in the transmutation of marriage culture in Beijing Study on the issue of immigration in Xinjiang Study on the marine trade and culture in Shandong Studies on the local history of northeast China Investigations on the history and bulture of Guangdong qiaoxiang