"The study about the school of Guan-Zhong" has been paid much attention in the field of the history of thought, but not in the filed of literature study. Li Yin-du, who lived in the region of Guan-Zhong, was a famous poet and an expert in Poetics in the early-Qing Dynasty. His works on Poetics, which based on the position of Ge-Diao Genre?, was in response to the poetry in Song-style in the reign of Emperor Kang Xi, and initiated a study in Han Poetry. His study on poet"s rhyme was particular in that time and had effect on Gu Yan-wu who happened to live in Guan-Zhong. Especially, his rhyme study on Tang Poetry and Du Fu"s poets illuminated the expert in Poetics in his time and after.

• 蔣寅