In the twenty-third year of Kaiyuan, the fireworks in Chang'an still reflected the afterglow of the prosperous times, but Jingyang was on the verge of a desperate situation in the heavy rain - the granaries were empty, subordinate officials were corrupt, and the land was taken over by powerful men. The former county magistrate took away the last grain of grain and fled.
Lin Yan opened his eyes from the pile of ancient books in the modern library and became the successor to this "mess".
He used the "cheating perspective" of a history student to solve the dilemma: he used modern arithmetic to clear up the fog in the account books, used "Liu Dian of the Tang Dynasty" to challenge powerful mergers, improved the curved shaft plow, dug branch canals, and turned the prescriptions in the textbook into a life-saving soup for the people of Jingyang.
But under the skin of the prosperous age, the land equalization system is like an ant nest bursting its embankment, the undercurrent of the party struggle between Li Linfu and Zhang Jiuling is raging, and An Lushan's spies have sneaked into Jingyang - the wind of Chang'an will eventually shatter the tranquility of this small county.
When the obsession of "returning to modern times" was defeated by the hot heartbeat of "protecting the people", he stood at the top of Jingyang City and faced the torrent of history: Should he cling to the top of power in Chang'an, or be a foolish old man who defends his land in troubled times?
The game between modern thinking and the hidden rules of the Tang Dynasty, the struggle between people's survival and the strangulation of power, in the last dusk of the Kaiyuan Dynasty, the "counter-era" guardian of a time traveler is tearing apart the hypocritical veil of the prosperous age...
