From the perspective of time traveler Zhao Cheng, the true living conditions of Qin craftsmen at the end of the Warring States Period are restored. The story revolves around the technological inheritance of government-run workshops, involving handicraft details such as bronze casting, lacquerware craftsmanship, and iron smelting innovations, interspersed with historical elements such as the "Wule Gongming" system, city pavilion commerce, and Legalist management, showing the struggle and perseverance of small people in the era of great changes between strict laws and technological breakthroughs.
