The book is the handout written by the author in 1931. It is an incompleted dynastic history from the unified Qin Dynasty to Wang Mangs new deal. As a historiography master, Mr. Qian Mu with great power of conception and digesting of historicla contents, explains the policies, economies academies and cultures of Qin and Han Dynasties, refering to the important points of the glorious period of Chinese history.