The core purpose of this book is to break the public's stereotype of the Song Dynasty as "weak, emphasizing literature over military affairs, and only seeking peace", and truly restore the three-dimensional and complete picture of the 319 years of the Song Dynasty: it was not a weak dynasty, but the peak era of China's economy, science and technology, culture, and people's livelihood; the people of the Song Dynasty were not cowardly subjects, but ordinary people with a strong character, ideals to help the world, and the limitations of the times. The whole book objectively dismantles the roots of the prosperity of the Song Dynasty, the helplessness of struggle, the confidence of glory, and the inevitable destruction of the Song Dynasty. It does not whitewash or slander it. It uses historical facts as its bones and human nature as its flesh to explain the logic of the rise and fall of the two Song Dynasties.