Zhao Feng, a doctor of history, traveled through troubled times, based in the three counties of Jiuchuan, and insisted on protecting the original intention of the people. He broke up the family monopoly, promoted agriculture and improved the plow, forged and smelted steel, opened up wasteland, controlled floods and settled the people; internally, he recruited talents from poor families, treated his soldiers well, and distributed land to the soldiers and their families; externally, he dealt with the court and separatist forces, and resolved many crises with wisdom. Faced with the checks and balances of the emperor, the schemes of the aristocratic families, and the rebellion of the rebels, Zhao Feng did not rely on the protection of the powerful, but relied on the people's support and hard work to gain a solid foundation.