Guo Jianlong's classic best-selling set (five volumes in total) ("The Siege of Bianjing" + "Two Hundred Years Across Africa" + "The Great History of the Silk Road" + "The Collapse of the Prosperous Age" + "The Lost World") are four very special works among the historical works of the well-known historical writer Guo Jianlong One of the works focuses on special events in ancient Chinese history; one focuses on the two-hundred-year history of Africa; one focuses on the history of Sino-foreign exchanges for more than three thousand years; one focuses on the history of the collapse of the Tang Dynasty with a novel and comprehensive perspective; and one that risks one's life to observe the world in depth. The five works reflect the author's broad vision, grand thinking, and profound vision. They can be said to be the five representative works of the author's historical writing.