The Holy Dragon Flower Church of the Heart-bound Heavenly Way (ä¸Âå¿Â天éÂÂé¾ÂÃ¥ÂÂå£æÂÂä¼ Yëxën tiÃÂndào lónghuá shèng jiàohuì), also known simply as Yixin Tiandao (ä¸Âå¿Â天é "Heart-bound Heavenly Way"), Yizhendao (ä¸ÂçÂÂé "Way of the One Truth") or the Holy Church of the One Truth (ä¸ÂçÂÂå£æÂÂä¼ YëzhÃÂn shèng jiàohuì), or Changmaodao (é¿æ¯Âé "Way of the Long Hair"), is a Chinese folk religious sect part of the Xiantiandao tradition.
The first hall of the religion (ä¸Âå¿Âå  yëxën táng, "one-heart hall") was founded in 1913 by Ma Shiwei (马士ä¼Â) in the Zouping County of Shandong.
In 1917 the One-Heart movement expanded opening a branch in Shanxi, and in 1922 it started a branch in Hebei. Its headquarters were located in Wutai County (Shanxi) and Jinan (Shandong). In 1937 the first congregation was established in Shanghai.