With only 42 individuals remaining, the Hainan gibbon is the world's rarest ape.

Once driven to the brink of extinction by logging and hunting, the species is now showing signs of recovery within China's Hainan Tropical Rainforest National Park.

As China enters its 15th Five-Year Plan period, the forthcoming National Park Law is set to usher in a new era of ecological protection, as the country aims to build the world's largest national park system by 2035.