The protagonist Qin Ke, a top student in the physics department of Huaqing University in the 23rd century, traveled to the Qin Dynasty in 221 BC due to a particle collider accident and became a prisoner on the verge of death in the Liyi prison camp. On the verge of death, bind the "Zhutian Technology System" and receive a gift package for beginners (elementary body strengthening, basic mechanical blueprints, points, physical recovery agent). Using system rewards and professional knowledge, he made a simple pulley set to solve the problem of moving rocks on the construction site, which attracted the attention of Zhao Cheng, the prison camp manager, who got rid of his identity as a prisoner and was responsible for improving construction site tools.
