This paper presents the case of one key figure in the history of Chinese language teaching in Japan: Jin Guopu金國璞. In 1897, Jin Guopu was recruited as a Chinese teacher of Tokyo Kotosyogyo Gakko (Tokyo Commercial School) from Beijing. After he came to Japan, he had been teaching Chinese for 6 years. During his stay, Jin Guopu published a series of Chinese textbooks, which had a deep influence on the Chinese education in Japan, especially his advanced level Chinese textbook Tanlun Xinpian. This textbook filled the blank that there were no advanced level Chinese textbooks in Meiji-era. However, about Jin Guopu little was known, this paper tries to add to our knowledge of Jin Guopu and his Chinese textbook Tanlun Xinpian by analyzing newly found materials.