Introduction to Yiyuan: As the garden within the garden of Yanling Flower Expo, Yiyuan should not only reflect the purpose of Yanling Flower Expo, but also show its characteristics that are different from other exhibition gardens. The plants in the entire garden are all species commonly used in the north. Through the perfect integration with architectural sketches, landscape artistic conception, terrain shaping, etc. and the clever positioning during the construction process, ordinary bamboo, plantain, cedar, wintersweet, black pine, palm, and hundred-year-olds have been transformed into beautiful plants. Sunflowers, weeping willows, lotus, etc. all have unique charm, reflecting the theme of flowers and trees.