The "World of Materia Medica" display at the "Between the Grass and Wood: Traditional Chinese Medicine Art" exhibition at the Guan in Beijing, Oct. 10, 2025. The work features 20 herbs arranged according to traditional Chinese medicine's five colors and three categories: plant, mineral, and animal. The arrangement visualizes traditional medicine's principle of harmony between form, color and nature. [Photo by Liu Ziying/China.org.cn]