Lu Guimeng

　　Lu Guimeng, agronomist and poet in the late Tang Dynasty (618-907), was a native of today's Wujiang, East China's Jiangsu Province.

　　Lu Guimeng, also called Tiansuizi, Jianghu Sanren or Mr. Puli, had been an assistant to the prefectural governor at his time. Later, he quitted his job and spent most of his life in seclusion on his estate, writing poetry and essays. Collection of Essays of Mr. Pu was one of his major works.

　　He engaged himself in farming and expressed his sympathy for the common people. His representative work, Lei Si Jing, occupied an important place in books of science and technology in ancient China. For the first time in history, the book described in detail the structures and measures of Quyuan plough. The book also described other important development of farming tools in the Tang Dynasty, such as the use of rake, whetstone and stone roller for threshing grain and leveling a threshing floor.