Gu Changgeng, a graduate student in the Department of Modern History, woke up and became a poor scholar with a poor family in the 30th year of Qianlong's reign in the Qing Dynasty. My predecessor died of a high fever, my mother was seriously ill in bed, and my family was in debt. It was the beginning of hell. Facing the decay and darkness under this "prosperous age" and the fate of the country that will collapse in the next hundred years, Gu Changgeng knows that he cannot just be a spectator. With knowledge and vision that surpassed the times for hundreds of years, he decided to take up the pen in his hand, starting from a commoner, stirring up the situation and saving the empire that was about to sink. Imperial examinations, official administration, military wars, commercial wars... He wants to use his own way to fight for a different future for this ancient country.