Fang Mugu, 33 years old, is a lecturer in the history department of a university, specializing in the history of ancient Chinese political systems. When he woke up, he became the famous seventh prince of the Zhou Dynasty for being "stupid" - a marginalized person who was about to be treated as an abandoned son by the prince and sent to the enemy country. No one knows that this body contains a soul that is familiar with five thousand years of political history and has a grasp of modern game theory and systems thinking.
Starting from pretending to be crazy and acting stupid to survive in the court, he investigated fraud cases, cleared up the backlog of cases, reversed unjust cases for 13 years, proposed the imperial examination and death penalty review system, and gradually established his reputation in the cracks of the imperial power. He got acquainted with Liu Ruyan, the largest intelligence dealer in the capital, and moved from temptation to trust with Shen Qingci, the female commander of the Patrol Division. He found the first ray of warmth after time travel in the brotherhood of his ninth brother Fang Muyun. In order to stay away from the whirlpool and establish a foundation, he took the initiative to go to Hancheng, the most remote fiefdom, and used modern management thinking to turn the dying border town into the strongest fortress on the border. He also met the border army general Qin Lie and the Jianghu heroine Yan Wushuang, and gathered a group of people who could be trusted to support him.
When he was accumulating strength in his fiefdom, Xiao Mubai, the peerless genius of the Beishuo Empire, was making arrangements from a distance. Xiao Xueming, the princess of the enemy country, was competing with him across the country's borders. Gu Wanqing, the daughter of the imperial tutor, was both an academic enemy and a friend of his. From "just trying to survive" to "helping the world", from being a foolish prince to being powerful, when the sixteen states of Longyuan were restored and the mountains and rivers were unified, he practiced the ancient motto of "retire after success" and retired to the south of the Yangtze River with his lover. Many years later, the voices of children reciting classics came from the distance - the world returns to its heart, not to one person, but to every living soul on this land.