The author is a Professor at the School of Chinese Classics, Renmin University of China, and consultant of the China Qin and Han History Research Association, mainly engaged in the research of Qin and Han history. He has published more than 40 academic monographs, including Qin and Han Dynasty Traffic History, Cultural Excavation of Historical Records: Anthropological Exploration of Early Chinese History, and Research on Chinese Historical Documents in the 20th Century.