Humming is a magical singing art created by the Mongolian people: a singer sings two parts at the same time purely with his own vocal organs. It is unique among the folk songs of various ethnic groups in China. Humming is mainly distributed in Xilin Gol, Hulunbuir Grassland and Hohhot City in Inner Mongolia Autonomous Region. This kind of singing can also be heard in Mongolian settlements in the Altai Mountains of Xinjiang Uygur Autonomous Region, Mongolia, Tuva Republic of Russia and other regions and countries. As a special form of folk singing, Humming is an outstanding creation of the Mongolian people. It conveys the Mongolian people's deep philosophical thinking and understanding of the natural universe and all things in the world, and expresses the Mongolian people's pursuit of harmonious survival and development and healthy aesthetic taste.