 Unlike Tianshi dao, whose priests are married and live with their families, Quanzhen is a celibate monastic order, and under this form it has propagated mainly in northern China. In addition to certain forms of ritual, the main practices of Quanzhen monks include meditation and Internal Alchemy (Eskildson 2004). However, the overall image of Quanzhen (and Longmen) is complex, as it also includes non-institutional and non-monastic forms. At their origins lies the fact that Wang Zhe and his seven disciples are also identified as the so-called Beizong, or Northern Lineage, of Neidan; and especially the fact that Longmen as a whole traces its origins to the above-mentioned Qiu Chuji, who is traditionally known as a Neidan practitioner. From the Yuan period onwards, therefore, several masters and adepts of Neidan have claimed affiliation to Quanzhen and/or Longmen, and have created innumerable sub-lineages throughout China with little or no connection to the central institution.