Praying For The Prairie-Humai Is A Dialogue Between The Mongols And The Sky:- On the days when the Mongolians are the most traditional obo, come to Ulan Wutai, the largest obo in the world, experience the authentic obo culture, perceive the language of the sky, taste the beauty of nature, and have an intimate contact with the grassland! From the vast Mongolian grassland to the blue On the lower reaches of the Sedanube, there are all kinds of artificial "deposits-obo". Some people say that obo is a navigation mark on the grassland, and some people say that obo is a totem left by the ancestors, interpreting the mysterious philosophy of the obo culture, and revealing the greatness of nomadic civilization. Remains.