 The Kongō-kai mandara (Srkt: Vajradhātu mandala; “Vajra-realm mandala”) represents the “male priciple” and embodies the vajra-wisdom, a wisdom that is adamantine and imperishable and that illuminates and enfolds all beings. This symbolizes the sixth element, the mental element of chi (wisdom), referring to the mental realm of the knower, the subject of cognitive experience. But it also represents the Buddha’s adamantine power of illumination that realizes enlightenment, symbolized by the vajra (an adamantine weapon with many points). In this respect the mind it symbolizes is not only the practitioner’s mind but also the all-comprehensive mind of Dainichi as indestructible potentials of the cosmos, as the Buddha’s “embodiment of wisdom” (chishin). 