You jiao wu lei : zhong wan Ming shi ren jiao hua huan guan xing dong yan jiu = Moral education without prejudice : a study on the actions of enlightening the eunuch by scholar-officials in the Mid-Late Ming Dynasty
Ming dai wei suo zhi du yu Guizhou di yu she hui yan jiu = A study on the Wei-Suo system in Ming Dynasty and its relationships with the formation of the regional societies in Guizhou province
Yuan Ming shan dai zhi ji Zhong Chao zheng zhi guan xi bian qian yan jiu = A study on the changes of political relations between China and Choson in the late-Yuan and early-Ming period