In the 13th century, China was turbulent, and the confrontation between Mongolia and Song Dynasty rewrote the direction of history. This book takes the pioneering path of the three generations of Genghis Khan, Ogedai, and Kublai Khan as its veins, and the souls of Zhang Shijie, Lu Xiufu, and Wen Tianxiang who defended their land in the late Song Dynasty as its bones. It panoramically outlines the magnificent picture of the decades-long game between Mongolia and Song Dynasty. Genghis Khan unified the grasslands and conquered the Jin Dynasty and established the foundation of the Great Mongolia; Ogodai inherited the great cause and continued the southward and westward expedition, establishing the confrontation between Mongolia and Song Dynasty; Kublai Khan's talent and far-sighted strategy combined with the integration of multiple cultures finally unified the world and established the Yuan Dynasty. The three generations of talented people are determined to forge ahead, demonstrating the courageous and pioneering spirit of the nomadic people. At the end of the Southern Song Dynasty, the dynasty collapsed. Zhang Shijie fought bloody battles on the battlefield and refused to retreat, Lu Xiufu betrayed the emperor and threw himself into the sea and died for his country, and Wen Tianxiang's integrity and righteousness will last forever. In the late Song Dynasty, the three heroes stepped forward in the crisis, using their integrity and flesh and blood to interpret the sincerity and perseverance of the Chinese people to protect the country and the country. The whole book takes the war between Mongolia and Song Dynasty, political games, and cultural integration as the main lines. It not only lays out the grand battlefield of the Jin Dynasty, but also depicts the choices and persistence of historical figures. It not only writes about the pioneering and integration of the Mongolian nation's entry into the Central Plains, but also pays tribute to the unyielding resistance of the patriots of the Southern Song Dynasty. This book is based on historical facts, digs deep into the spiritual core, and does not simply reproduce. The self-improvement of three generations of geniuses and the unyielding willingness of the three heroes of the late Song Dynasty are two spiritual forces that have merged into the long river of Chinese history. The pioneering spirit of forging ahead and persevering unyieldingly inherited in the book is the code of the Chinese nation's endless survival, providing the spiritual strength to brave the wind and rain and move forward bravely for today's national rejuvenation.