The film complements my new book (Three Pines Press, 2016, 416 pp.). You can order it here; for reviews, see here.

• For the Yanggao Daoists in the context of ritual in north China, see my book In search of the folk Daoists of north China (Ashgate, 2010, with DVD).
  In Chinese, see also
• Wu Fan, Yinyang, gujiang 阴阳鼓匠 (Beijing: Wenhua yishu chubanshe, 2007);
• Chen Yu, Jinbei Daojiao keyi yinyue yanjiu 晋北道教科仪音乐研究 (Beijing: Shehui kexue wenxian chubanshe, 2015).