Yun Heng was a bourgeois revolutionary, the first group of people from Inner Mongolia to join the Chinese United League in 1905. In 1910, while a student, Yun received an offer from the Zhibian school in Beijing. However, in order to respond to the Wuchang Uprising on Oct 10, 1911, he returned to Inner Mongolia to plan an armed uprising there. 

Yun Heng planned a revolution with Jing Quan, Guo Honglin and others in Baotou, but the plan failed. Guo and others were killed and Yun Heng was lucky to escape. After that, he was appointed as Suiyuan General by the Chinese United League, which ordered him and Yan Xishan to attack Hohhot at the beginning of 1912. Later, he met Sun Yat-sen and Huang Xing in Shanghai and Nanjing and supported Yan Xishan as governor of Shanxi. Subsequently, Yan Xishan froze him out of affairs, so he went off to Shaanxi to continue to fight against Yuan Shih-kai. In 1919, he launched local armed forces against the Beiyang warlords. In 1925, he was ordered by Feng Yuxiang to integrate scattered troops and plan to organize the Fifth Army of the National Army. In 1926, he was hit by a stray bullet and was killed.

Yun Heng spent his entire life in the fight against dictators, the Qing government and Yuan Shih-kai, even Yan Xishan. Although he did not achieve any success, he died on the road to struggle. Because there are so many people who sacrificed themselves in this way, the struggle finally succeeded.