Soyombo symbol arrangement of abstract and geometric symbols and patterns. They are fire, sun, moon, two triangles, two horizontal rectangles, the "Taijitu" (yin and yang) and two vertical rectangles. The elements in the symbol are given the following significance (from top): The Soyombo symbol has appeared on the national Flag of Mongolia since 1911 (except between 1921 and 1924). It served as the Emblem of Mongolia from 1924 to 1940, and was included in the design again in 1992. Mongolian Armed Forces vehicles bear the symbol as a marking. The symbol is seen all over the country, especially on a hillside outside
School of Naturalists and Qi. In later periods, these epistemological theories came to hold significance in both philosophy and popular belief. This school was absorbed into the alchemic and magical dimensions of Taoism as well as into the Chinese medical framework. The earliest surviving recordings of this are in the Ma Wang Dui texts and Huang Di Nei Jing. Zou Yan (; 305240 BC) was an ancient Chinese philosopher best known as the representative thinker of the Yin and Yang School (or School of Naturalists) during the Hundred Schools of Thought era in Chinese philosophy. Zou Yan was a noted scholar of the