China is marking the fifth anniversary of the establishment of its first five national parks. Among them is Hainan Tropical Rainforest National Park, located in the heart of south China's Hainan Island. Home to one of China's best-preserved tropical rainforests, the park is a treasure trove of biodiversity and an important ecological barrier for the island. Join CGTN to explore the park's lush forests and breathtaking natural scenery.