Entering golden autumn, the Qilian grassland is warm in the sun, attracting many amateur aerial photographers. Photo shows an aerial view of the most beautiful grassland at the foot of Qilian mountains, Qilian County, Haibei Tibetan Autonomous Prefecture, northwest China's Qinghai Province. Qilian County is located at northeast Qinghai Province and is known as the "north gate" of Qinghai province as it is next to the vital thoroughfare, the Hexi Corridor on the ancient silk road. It also has the reputation of "Switzerland of the East".