In 221 BC, the Qin Dynasty destroyed the six kingdoms, and the first emperor Yingzheng proclaimed himself emperor. He promoted "the same text in books and the same track in carriages", but it concealed the restoration of the old aristocrats of the six kingdoms. The female protagonist travels to Xianyang, the capital of Qin, and possesses the daughter of a down-and-out "Guizhou head" (commoner). She gets involved in the current of the times with her modern historical knowledge and survival wisdom; The story combines the laws of the Qin Dynasty ("Eighteen Types of Qin Laws"), the reform of the county and county system, and the collision of ideas from hundreds of schools of thought. In the conflict between the "farming war system" and the "remnants of the Six Kingdoms", it composes a "love song in troubled times that spans time and space."