The Old Chinese Doctor is set in Shanghai between 1927 and 1946. It tells the story of Weng Quanhai, a descendant of the Menghe School of Medicine in Changzhou, Jiangsu, who ventured into Shanghai and devoted his life to the protection and inheritance of Chinese medicine culture. The play aims to reflect the great historical pattern through the experience of small people, to show the infinite charm of traditional Chinese medicine culture, and the strong vitality of Chinese medicine that has been passed down for thousands of years and has become more and more new. It praises the Chinese people's national spirit of perseverance, diligence, trustworthiness, generosity, and fearlessness of power under the nourishment of traditional culture.