[1] It is a compilation of Jeong Do-jeon (Sambong)'s poetry, prose, philosophy, and his plans for the reformation of the Goryeo /Joseon) government.
[1] Volumes 9 and 10 contain Buddha's Japbyeon (佛氏雜辨),[7] Simgi-ripyeon (心氣理篇),[8] and Simmundap (心問天答),[9] and are writings criticising Taoism and Buddhism and arguing the philosophical superiority of Neo-Confucianism, together with the need for Buddhists' non-involvement in government.
Volumes 11 and 12 contain the Collection of Economic Literature (경제문감별집) written in 1397 (under King Taejo').
This book describes the achievements of successive kings of China and Goryeo and supplements the shortcomings of Gyeongjemungan (which dealt only with the duties of subjects) and discusses the nature of the rule of the monarch.
The book refers to Jurye and to the military techniques of China's famous generals, and explains in detail how to camp, how to command, and gives methods for attack and defense in warfare.