Reborn: I Unite the Six Kingdoms in the Qin Dynasty

Shen Zhou, a twenty-first-century forensic investigator, transmigrates by accident to the side of Prince Zheng of Qin. Using modern criminal investigation and forensic science, he repeatedly solves cold cases and roots out traitors. He also builds Qin a technological force far ahead of its time, helping the First Emperor embark on the road to unification with a scientific eye and a detective's instincts.