He mainly studies the history of Chinese historiography, the history of Sino-Korean relations in Ming and Qing Dynasties, overseas China studies and Korean history. Bachelor of History from Wuhan University (1988), Master of History from Nankai University (199 1), Doctor of History from Hong Kong University of Science and Technology (1998), Doctor of Philosophy (PhDinHumanities, 200 1). He went to Korea, Japan, the United States, Hongkong and Taiwan Province for academic exchanges many times. From July 5438+0 in 2006 to June 2002, he was a visiting professor at Korea University, a visiting scholar at Harvard Yanjing Society from September 2005 to August 2006, a visiting researcher at City University of Hong Kong from June to September 2008, and a visiting researcher at 20 18. So far, more than 80 papers and 7 monographs have been published.