Guo Pu (pú) (276-324), courtesy name Jingchun, was a native of Wenxi County, Hedong (now Wenxi County, Shanxi Province), and the son of Guo Yuan, the prefect of Jianping in the Western Jin Dynasty. A famous scholar in the Eastern Jin Dynasty, he was not only a litterateur and exegesis expert, but also a master of Taoist mathematics and the founder of immortal poetry.
Guo Pu once annotated ancient books such as "Book of Changes", "Shan Hai Jing", "Biography of Emperor Mu", "Dialect" and "Chu Ci", and is a Feng Shui master
Today's "Cihai" Guo Pu's annotations can be found everywhere in "Ciyuan" or "Cymology". Guo Pu's representative works are the fourteen "Poems on Traveling Immortals" and "Jiang Fu". Although most of the works involve metaphysics, the diction is brilliant, the realm is expanded, and the emotions are upsetting, which is completely different from the metaphysical poetry at that time. "Sui Shu Jing Ji Zhi" records seventeen volumes, and Ming people compiled "Guo Hongnong Collection". Guo Pu spent 18 years researching and annotating "Erya". He explained the ancient names of animals and plants using the dialect names popular at the time, and also notated them and drew pictures, making "Erya" an important reference book for the study of Materia Medica in the past dynasties. . The pictorial classification of animals and plants pioneered by Guo Pu was also used by all large-scale herbal books after the Tang Dynasty. In terms of academic origins, Guo Pu not only inherited Yi Xue from his family, but also inherited Taoist magic and mathematics theory. He was the most famous alchemist in the Jin Dynasty and was said to be good at many strange alchemy skills.