The Hainan black-crested gibbon is one of man's closest relatives living in the Bawangling National Nature Reserve, China's southern island province of Hainan. The population of Hainan black-crested gibbons decreased mainly in the 1970s due to habitat loss. With a population of merely 33, the tropical rainforest of Bawangling National Nature Reserve is their only habitat. Join CGTN to explore the rainforest where they live and the eating habits of the gibbons.