Xu An, a descendant of a family of modern Chinese medicine, passed through the Great Yan Dynasty in an accident and became a foolish boy who was bullied in Caolu Village in the countryside. In his previous life, he was a lonely and autistic genius. In this life, he decided not to hide it anymore. With his extraordinary medical skills and modern knowledge, he has made great achievements in this ancient world. When the bullies in the village raped women and the wealthy gentry in the town took their lives, Xu An used silver needles as swords and herbs as soldiers to carve out his own world step by step. From treating the terminally ill daughter of the county magistrate to exposing the magistrate's shocking conspiracy of colluding with bandits, he was trapped in the quagmire of officialdom, but he was always able to turn danger into safety. However, when undercurrents surged in the court, a legend about the "elixir" drew him into a larger whirlpool. In this world of intrigue and force, Xu An has to face not only ruffians, but also the terrifying black hands hidden behind the scenes. His medical skills can save people, but they can also kill people; his wisdom can rule the world, but it can also subvert the world.
