夢溪筆談, Volume 07-10

A historical text encompassing philosophical and scientific concepts that were likely penned during the late 11th century. This work explores various intricate subjects, such as mathematics, astronomy, and state governance, offering insights into the scientific thought processes and methodologies of ancient China. At the start of the book, the text presents a complex discussion on calendrical science, detailing the modifications and evaluations of various astronomical calendars used during different dynasties. It addresses the challenges faced in accurately calculating dates and celestial phenomena, drawing on historical references and astronomical principles. The opening focuses particularly on the ''大衍曆法'' (Great Calender System) and its significance in refining timekeeping and understanding celestial mechanics, while critiquing the inadequacies of previous methods. Kuo Shen further discusses ancient numerology and cosmology, establishing a comprehensive framework for both casual readers and scholars interested in historical Chinese science and philosophy.