Du Yan possesses peerless medical skills and travels back to ancient times. First, save the Xu family The lives of the siblings and Mrs. Xu can stand firm. Then went to Qingqinglou She met Wan'er, the courtesan, and was entrusted by Wan'er to go to Shen Wan, the richest man in Liangjiang Industry. Treat illnesses at home in the mountains. After successfully solving the Shen family crisis, Du Yanyan returned to Xu The family also helped the Xu family solve the medicinal material crisis. Finally, plague broke out in the two rivers During the epidemic, the Xu family was trapped. With Du Yan's efforts, the plague was lifted. The Xu family was rehabilitated. Xu Qing'er, a young lady from the Xu family, and Wan'er, a courtesan, are in love with each other. Yan, Du Yan was also named the world's medical saint.