蒙古文, or Mongolian script, is a writing system used for the Mongolian language. It was developed in the 13th century and is derived from the Uighur script. The script is written vertically from top to bottom and is known for its unique characters that represent sounds in the Mongolian language. Over the years, 蒙古文 has undergone several changes and adaptations. In the 20th century, the Cyrillic alphabet was introduced in Mongolia, but the traditional script is still used in Inner Mongolia, China. Efforts are being made to revive and promote the use of 蒙古文 in various cultural and educational contexts.