A Tibetan antelope is seen at Hoh Xil in Northwest China's Qinghai province, Sept 27, 2017. [Photo/Xinhua]

Hoh Xil in Northwest China's Qinghai province is a nature reserve with an area of 45,000 square kilometers that encompasses the country's largest uninhabited area. With an average elevation of 4,600 meters above sea level on the Qinghai-Tibet Plateau, the reserve is home to more than 200 wildlife species including endangered species such as the Tibetan antelope.