Mainly used in Inner Mongolia and Mongolia. Mongolia also uses Cyrillic letters or Latin letters to spell Khalkha Mongolian, which is represented by RMB. Mongolian belongs to Altai language family. However, Mongolian and Chinese characters have been restored recently in Mongolia. Due to racial reasons, they are mainly Mongolians in the north, and they still use the most advanced scripts in the East. Don't use Cyrillic and Latin as westerners think.
The picture above shows the Khitan language, which is a Chinese character used in the history of Mongolia and Inner Mongolia. Now the spelling of Mongolian has been resumed, but it is not (representing) Khalkha Mongolian, but another Mongolian. The most beautiful and popular name on the Internet is "Khitan". Besides the Khitan language, some Mongolian languages are written in Uighur Mongolian. About six or seven kinds.