According to a survey held in 2004 by the Minzu University of China, about 80% of the population of the region practice the worship of Heaven (that is named Tian in the Chinese tradition and Tenger in the Mongolian tradition) and of ovoo/aobao [REF].
Tibetan Buddhism (Mongolian Buddhism, locally also known as "Yellow Buddhism") is the dominant form of Buddhism in Inner Mongolia, also practiced by many Han Chinese.