Yiguandao / I-Kuan Tao (traditional Chinese: 一貫道; simplified Chinese: 一贯道; pinyin: Yīguàn Dào; Wade–Giles: I-Kuan Tao), meaning the Consistent Way or Persistent Way, is a Chinese salvationist religious sect that emerged in the late 19th century, in Shandong, to become China's most important redemptive society in the 1930s and 1940s, especially during the Japanese invasion. In the 1930s, Yiguandao spread rapidly throughout China led by Zhang Tianran, who is the eighteenth patriarch of the Latter Far East Tao Lineage, and Sun Suzhen, the first matriarch of the Lineage.
Yiguandao started off with a few thousand followers in Shandong in the 1930s, but under the Patriarch and Matriarch's leadership and with missionary work the group grew to become the biggest movement in China in the 1940s with millions of followers. In 1949, Yiguandao was proscribed in mainland China as an illegal secret society and heretical cult as part of the greater antireligious campaign that took place. Yiguandao has since flourished in Taiwan, despite decades of persecution by the Kuomintang that officially ended in 1987 with the legalization of Yiguandao and a government apology. Yiguandao is still not able to be officially promoted in the mainland, but there are many members who live and practice there.
