Pearl River - Mongolia Grassland Covers An Area Of 250.557 Square Kilometers,with A Total Population Of 2.66 Million. The Mongolian Nationality Is The Dominant Ethic Group, And 35 Other Nationalities,such As Han, Manchu, Russian, Etc. Live In Harmony With Them On The Grassland. Hunlunbeier Is Called “green And Clean Land” Because It Is Relatively Free Of Pollution. Photo