Weixinism ( Wéixīnjiào), institutionally also known by the extended title of Holy Church of the Heart-Only ( Wéixīn Shèngjiào) is one of the Chinese salvationist religions born in Taiwan in the late 20th century. It was founded in 1984 in Taichung by Grand Master Hun Yuan. Its global core membership is about 300,000, with a larger audience estimated by Taiwan's Ministry of Internal Affairs at 1,000,000. The church has quickly spread to mainland China since the early 2000s, where it functions as a platform for joint initiatives of the Chinese mainland and Taiwanese governments for the renewal of Chinese culture. It has also developed as a worldwide religious movement, attracting followers not only from the Chinese diaspora, but also communities of other races, including East Asians and even Westerners. Weixinism operates a synthesis and reproposition for the modern times of ancient Chinese religion and philosophy, primarily focused on the "orthodox lineages of Yijing and fengshui", and worship of the "Three Great Ancestors" (Huangdi, Yandi and Chiyou). It has been defined as a form of institutionalization of Chinese folk religion. Founding Weixinism was founded in the 1980s, in a context where the end of martial law in Taiwan, with the consequent affirmation of freedom of religion, allowed several new religious movements to operate openly and eventually to gain legal recognition. At the same time, in the aftermath of the Cultural Revolution in the mainland, several local new religious movements presented themselves as the guardians of Chinese "orthodoxy" in religious beliefs, intended as the genuine religious and cultural tradition that had developed throughout centuries of Chinese history. Among the most successful of such movements was Weixinism, which was founded as the result of the mystical experiences of Chang Yi-Jui, born in Zhongliao, Nantou, Taiwan, in 1944, and later known as Grand Master Hun Yuan. Before falling seriously ill in 1982, Chang, who operated a land survey company in Taiwan, was not particularly religious, although he had been interested for years in Yijing and fengshui. He attributed his recovery to a miraculous intervention and vowed to dedicate his remaining life to spirituality. He claimed to have received messages both from the Jade Deity, one of the representations of the supreme God, and from Guiguzi, a name that indicates both a group of writings compiled between the late Warring States period and the end of the Han Dynasty and their author, later deified in