Цюаньчжэнь
With strong Taoist roots, the Quanzhen School specializes in the process of "alchemy within the body" or "Neidan" (internal alchemy), as opposed to "Waidan" (external alchemy which experiments with the ingestion of herbs and minerals, etc.). The Waidan tradition has been largely replaced by Neidan, as Waidan was a sometimes dangerous and lethal pursuit. Quanzhen focuses on internal cultivation of the person which is consistent with the pervading Taoist desire for attaining Wu Wei, which is essentially unconscious action.