Dr. Han Ji, a mechanical doctor, traveled through time and became a baby of the Qin Dynasty. He was born with a mysterious bronze fragment embedded in his left palm. From improving farm tools to recasting weapons, from papermaking to primitive steam engines, he brought scientific and technological knowledge beyond the times to tear a crack in the civilization of the Qin Empire, which "took law as its teaching".
Fusu was no longer the cowardly noble prince in the history books, but was guided into an innovator with both benevolence and iron fist; burning books and humiliating Confucians was turned into a "Hundred Schools of Skills Examination", and the collision of Mohist organ skills and Legalist criminal science in Xianyang sparked the spark of the industrial revolution.