Study on Zhang Yan, the last genius of Ci in the Song dynasty Study on the evolution about style of ci in the Ming dynasty Study on guanke of the hanlin academy in the Ming dynasty Study on the society and politics of Jin and Song dynasty 并列题名：Study on the evolution about style of ci in the Ming dynasty Study on the legalization of ethnic policies in the Qing dynasty Study on the silk in the Ming dynasty Study on the poetry circle of Huizhou in the Song dynasty Study on the state and local society in song dynasty a study on proclamation and social control in the Song dynasty