Lin Yan, a graduate student in the Department of Modern History, accidentally traveled to the Qin Dynasty and became Xu Fu, an alchemist in Langya County. He knew the direction of history. In order to get rid of the historical fate of "unknown life and death", he relied on modern knowledge and historical understanding to fight wits and courage under the high-pressure rule of the Qin Dynasty, resolve many crises, and finally convinced the First Emperor to prepare enough resources to successfully go to sea to search for immortals.
