Hoh Xil, located in China’s Qinghai Province, is listed as the largest and highest plateau in the world by UNESCO. Even though the environment is extremely harsh, it is also one of the major headwater sources of the Yangtze River and home to more than 230 species of wild animals. To help preserve local ecology, Yang Xin started China’s first non-governmental nature reserve protection station in the region and has been working there for 30 years.