When Gu Changsheng woke up, he was standing on the Qin Great Wall construction site, his hands pressed against the bluestone that was half a man tall. A jade pendant engraved with longevity is attached to his chest - he has two thousand years of life.
The rules are simple and cold: save one person, and the jade pendant burns like a soldering iron; promote civilization, and the jade pendant warms like acquiescence. He cannot change the life and death of an individual, but he can push the entire world forward step by step in the dark.
From burning books and burying scholars to hide loose slips, to escaping from death in the Sand Dune Incident; from surrendering to Liu Bang who rode a thin yellow horse, to building a hidden pavilion after the Hongmen Banquet, and setting up the four black and yellow pillars in the early Han Dynasty - he used intelligence and food routes to support the operation of the empire behind the scenes. Zhang Qian emptied the Western Regions, and he sent people to accompany him for surveying and mapping; Wei Qing attacked the Xiongnu from the north, and he drew the shortest grain road;
Counties rather than Duhufu - the territory of China crossed the Congling Mountains, and the Silk Road never ended.
But he can't save the one he loves. Ah Heng, the medicine grinding girl, stayed with him for twenty years, then grew old and died. He wrote this line on the last page of the file: I will live to be a hundred years old and see thousands of people die. Only this death is more important than Mount Tai.
It is a catalyst, not a reactant. He is just the person behind the scenes delivering tools. From the late Qin Dynasty to the Han Dynasty, every advancement of civilization began with the humble bamboo slips and grain roads he had in hand. No one knows his name, and history has already taken a different direction. A time traveler, two thousand years of loneliness, an epic of civilization.
