Professor Tanaka is an expert in the vernacular literature of traditional China, especially in the drama of the Yuan dynasty, and although Idema's interest and research in Chinese vernacular literature cannot be said to have originated with his tutelage, they benefited immensely.
田中謙二教授是中國古代白話文學，尤其是戲曲的專家，不過伊維德的研究方向和興趣的確定，並不是自此伊始，只能說是受益良多。「外國人注意就是好的？」