The Taigu school (太谷学派 Tàigǔ xuépài), also Great Perfection (大成教 Dàchéng jiào) or Yellow Cliff teaching (黄崖教 Huángyá jiào), is a mystical folk religious sect of Confucianism spread especially in Jiangsu, Anhui and Shandong. It was founded by Zhou Xingyuan, a man with shamanic skills entitled Taigu (太谷 "Great Valley") by followers.
The purpose of the school is to help those who practice it to develop a clear and enlightened state of mind, in which man apprehends his true nature and recovers original simplicity.
References
Taigu school Wikipedia(Text) CC BY-SA