Guo Pu (郭璞), also known as Jing Chun (景纯), was an accomplished astronomer, diviner, philologist, and scholar from East County (now part of Shanxi province). His book “Jade Refined Scripture” 《玉照定真经》was referenced by Xu Zi Ping (徐子平) and Zhang Yong (张顒) and was a significant inspiration for the development of the Four Pillar calculation system, which Xu Zi Ping completed in the 10th century. Guo Pu also wrote “Jade Refined Divinity Scripture” 《玉照神应真经》, which was also referenced by Xu Zi Ping. These books contributed significantly to the development of Traditional Life/Fate science in the Northern Song Dynasty. Guo Pu’s works, along with other books such as “Li Xuzhong’s Book of Fate” 《李虚中命书》, were instrumental in starting the study of the Four Pillar calculation system.