The Battle of Baitag Bogd Mountain (Mongolian: Байтаг богдын тулгарал) or Beitashan Incident (Chinese: 北塔山事件; pinyin: Běitǎshān shìjiàn; Wade–Giles: Pei-ta-shan shih-chien; alternatively Baitak Bogdo incident) was a border conflict between China, Mongolia, and the Soviet Union. The Mongolian People's Republic became involved in a border dispute with the Republic of China, as a Chinese Muslim Hui cavalry regiment was sent by the Chinese government to attack Mongol and Soviet positions.