Study on system of prime minister in Song dynasty 并列题名：Study on system of prime minister in Song dynasty Study on legal system of commercial tax in Ming dynasty Famous of prime minister Ming dynasty 并列题名：Famous of prime minister Ming dynasty 并列题名：Study on legal system of commercial tax in Ming dynasty Study on the banishment system in Qing dynasty Study on the state and local society in song dynasty study on literati from imperial examination in Qing dynasty Study on taxation of Suzhou prefecture in ming dynasty