a study of field of literature in China's middle ages 文学盛衰的权力因素：中国中古文学场域研究：a study of field of literature in China's middle ages a study of local literature in the new centuray a study of the early literatures on the silk road Humanistic trend of Spanish secular literature in the middle ages art and nature in the middle ages a study of net literature and intertextuality a study of Macao Chinese literature research since nineteen eighties a study on the history of the northern frontier in China during the middle ages a study of translated children's literature in China 1898-1949