Later, this practice evolved into “guarding the Three Ones” (shou sanyi), which again exists in several varieties (Andersen 1979; Robinet 1993: 119–38). For instance, the Three Ones are represented as three children who live in the Cinnabar Fields. Another practice combines external and internal aspects: after visualizing the descent of the Northern Dipper above his head, the adept sees the Three Ones emerging among its stars; he breaths three times, and each time one of the Three Ones reaches its residence in the respective Cinnabar Field.