Su Wu's Legend: The Ballad of the Northern Sea Su Wu was dispatched as an envoy to the Xiongnu, but due to the betrayal of his deputy and the change in the Chanyu's rule, he was exiled to the Northern Sea to herd sheep. Alone, he battled extreme cold and wild beasts, endured the deaths of his colleagues, and faced repeated attempts by friends to persuade him to surrender. Yet, he remained steadfast in upholding the integrity of the Han Dynasty. Through nineteen years of hardship, he never dishonored his mission, defending the dignity of the Han with unwavering loyalty, and writing an immortal legend of ethnic integration and cultural exchange.