On Yehu Ridge, the broken flag does not fall. Chen Fan, who traveled through time and became a primary school student at the end of Jin Dynasty, started by gathering thirteen defeated soldiers, defended the lonely pass, entered the central capital to control the court, married into the clan, captured Goryeo, attacked Mongolia in the north, destroyed Xixia, pacified Zhao and Song in the south, conquered Tubo, conquered Dali, went to Southeast Asia, conquered the Western Regions, conquered India, and reached Western Asia and Eastern Europe. Thirty-four years later, the imperial flag covered the sky, but he still remembered the broken flag.