Li Jin, an urban planner in 2030 AD, accidentally traveled to the ninth year of Wude, Emperor Gaozu of the Tang Dynasty. At this time, the changes in the Xuanwu Gate have not yet occurred, and the curtain of the prosperous age is about to open, but there is a turbulence hidden behind it.
As a refugee with nothing, Li Jin has no family background and no gold or silver. His only weapons are the insights and knowledge from the next thousand years. He witnessed the magnificence of Chang'an City and the plight of the poor behind it, and determined to use modern urban planning, economic concepts and science and technology to sow the seeds of change in this ancient land.
Starting from transforming slums, to creating a business empire, and then to influencing the change of imperial power with unparalleled strategies, Li Jin traveled between the marketplace and the court. He does not seek the dignity of the Ninth Five-Year Plan, but wants to personally shape a stronger, more prosperous, and more just Tang Dynasty and create his own era. However, the inertia of history, the obstruction of aristocratic families, and the suspicion of the imperial power followed one after another. When the wings of butterflies stir up a storm, how will Li Jin balance ideals and reality and protect the people he loves while achieving great things?
