In the approach of the vajra heart essence, the subtle energies settle into a natural state of quiescence, and so need not be made to enter the central channel. When the subtle energies in the individual radiating channels [chakras] have naturally become pure, the subtle energy of timeless awareness in the channels of light is inherently lucid and in its natural state. One perceives the pure visions of timeless awareness, consisting of enlightened forms [deities], light, pure realms, and so forth, rather than manifestations of confusion. It is posited that there is "freedom" once the power of the channel of light within the central channel has increased, gradually causing blockages in the latter channel to dissolve into light [are seen as empty forms]. The qualities of enlightenment associated with the spiritual levels are experienced as awareness's own manifestations.With the first two blockages in the channel being freed into light, One experiences some 1200 Pure Buddha realms within a field of light that is perceived externally . One is able to send forth rays of light to these rounds and "reach" them by embracing them as awareness's own manifestations [viewed nondually]. If one moves one's body, 100 pure realms quake and becomes vivid. Inwardly one can, for example, enter and come out of 100 non-conceptual states of meditative absorption in which one experiences the true nature of phenomena. For these reasons, this approach is remarkably superior to the lower ones. In fact, these other approaches seem to have a serious limitation, for if one practices with samsaric mind, the result will still be samsaric mind, because of the ineluctable connection between cause and result.In the highest approach, the key point is as follows: While on the path, one is free of samsaric mind, and so one swiftly attains the fruition in one's immediate circumstances. Nowadays, those who assert that Buddhahood comes from ordinary mind misunderstand this key point; theirs is not a valid description of the path, for there is a substantial discrepancy between timeless awareness and ordinary mind. ~Longchenpa quote from Drupta Dzd~