Study on the land tax system and related problems in Song dynasty Study on the state and local society in song dynasty Study on the tributes and its system in Qing dynasty A study of the land system in Jiangnan during the Ming dynasty 并列题名:Study on the state and local society in song dynasty A study on the patriarchal clan system and the state structure of Zhou dynasty Study on the banishment system in Qing dynasty Study on the society and politics of Jin and Song dynasty Study on the tax legal system in the Qing Dynasty Study on legal system of commercial tax in Ming dynasty