He says his NGO hopes to expand from two to eight stations along the Tuotuo River.

Gagyer grew up near the Yangtze River's source and has worked in the station since 2011.

The university graduate is accustomed to life on the plateau. His parents are nomads. But he makes special efforts to secure one luxury－coffee.

"I'm Tibetan. So, I guess I should drink milk tea," he says, brewing a cup using a spoon to filter grounds over a thermos.

"But I love coffee."

Still, a sense of identity compels him to work at the station.

"I'm from here," he says.

"So, I'm obliged to protect this environment. More local people feel it's our duty."

Schools organize outings for students to pick up trash.

They represent the future of Hoh Xil's environmental protection.