Introduction to Youlin: Jiulong Mountain is an ecological natural scenic spot with forest landscape as the main body. It has typical warm temperate natural deciduous secondary forests in northern my country, natural coniferous and broad-leaved mixed forests, natural Platycladus orientalis and artificial Pinus tabulaeformis forest, among which are nationally protected There are 100 species of plants. The wild vegetation in the park includes vitex, jujube, meadowsweet, ganoderma, Chinese begonia, thistle, rabbit umbrella and so on. There are more than 600 species of higher vascular plants in more than 130 families, including more than 40 rare plants under national key protection. It can be called a natural green plant museum and a natural treasure house of Chinese herbal medicine.