Study on forest economy of Huizhou in Ming dynasty Study on the poetry circle of Huizhou in the Song dynasty a study centered on the history of Wenzhou in the Qing dynasty study on literati from imperial examination in Qing dynasty Study of foreign cultures in Han dynasty Study on taxation of Suzhou prefecture in ming dynasty Study on system of prime minister in Song dynasty Study on social transformation of the later ming dynasty Study on the idealogy of vinaya in Ming and Qing dynasty Study on legal system of commercial tax in Ming dynasty