Lin Mo, a junior student in the history department who died suddenly after staying up late, traveled to the end of the Dawu Dynasty and became the helpless seventh prince Xiao Jingyan who was poisoned. At that time, Dawu was surrounded by feudal lords and factions, and was surrounded by barbarians outside. The country was on the verge of collapse. He pretended to be cowardly to survive, secretly planned, and asked himself to be sent to Huaisi to take root, conquer his confidants, appease the refugees, and rectify the government; after returning to the capital, he quelled the palace rebellion, reduced the vassals, centralized power, and implemented reforms; after ascending the throne as the emperor, he resisted the barbarians in the north and the Rongdi in the west, and finally allowed Dawu to revive. After collecting five tokens of his return to his soul, he activated the secret technique of founding the country when he first appeared in the prosperous age, and his soul returned to modern times, leaving only an imperial legend in the Dawu Mountains and Rivers.