How many dialects are spoken by the Mongol?
Inner Mongolia
Mongols in Inner Mongolia speak Mongolian dialects such as Chakhar, Xilingol, Baarin, Khorchin and Kharchin Mongolian and, depending on definition and analysis, further dialects or closely related independent Central Mongolic languages such as Ordos, Khamnigan, Barghu Buryat and the arguably Oirat dialect Alasha. The standard pronunciation of Mongolian in China is based on the Chakhar dialect of the Plain Blue Banner, located in central Inner Mongolia, while the grammar is based on all Southern Mongolian dialects. This is different from the Mongolian state, where the standard pronunciation is based on the closely related Khalkha dialect. There are a number of independent languages spoken in Hulunbuir such as the somewhat more distant Mongolic language Dagur and the Tungusic language Evenki. Officially, even the Evenki dialect Oroqin is considered a language.
Mongols
Three prominent groups split from the Xianbei state as recorded by the Chinese histories: the Rouran (claimed by some to be the Pannonian Avars), the Khitan people and the Shiwei (a subtribe called the "Shiwei Menggu" is held to be the origin of the Genghisid Mongols). Besides these three Xianbei groups, there were others such as the Murong, Duan and Tuoba. Their culture was nomadic, their religion shamanism or Buddhism and their military strength formidable. There is still no direct evidence that the Rouran spoke Mongolic languages, although most scholars agree that they were Proto-Mongolic. The Khitan, however, had two scripts of their own and many Mongolic words are found in their half-deciphered writings.