The Hustai National Park in Mongolia was established to restore the Przewalski's horse, an endangered wild horse. Przewalski's horses bred in zoos in the Netherlands and Germany have been gradually released into the park since 1992, and currently 387 horses live there. Along with the establishment of the national park, nomadic people have become aware of the problem of grassland degradation caused by livestock grazing, and are practicing ways to coexist with nature, such as suspending grazing for two years to restore the land. These efforts have been effective in restoring grasslands, and a research team led by the Mongolian Institute of Life Sciences has also succeeded in restoring damaged grasslands through the planting of native perennial grasses. Hustai National Park serves as a model for harmonious coexistence between humans and nature, and is an important example for sustainable environmental protection.