As to the kindling of Dumo, there are many different types, such as the kindling of Dumo in the Central Channel from the Navel Center and the Secret Center in the beginning stage; the kindling of Dumo outside of the Central Channel or the ordinary kindling. The manners of the kindling are also various, such as the kindling of the Dumo from the depth of the body; the kindling of Dumo in between the skin and the flesh, the intensive and weak kindling-warmness in the beginning stage; the kindling warmness going upward, blowing upward, and fleeing upward; and the strong and weak kindling. Of these kindlings, the former are better than the latter. The blisses produced by these varieties of kindling-warmness follow this pattern. In

addition to these numerous experiences that arise successively, one should pay special attention to discriminate between the kindling of the unique Dumo, the kindling of the ordinary warmness, the bliss produced by prana and the bliss produced by prana and the bliss produced by the melting of elements.

If the unique Dumo is ever kindled, the appropriate Bodhi-Heart will melt. In this case the yogi will have no sickness caused by the unbalanced elements, while in the case of the ordinary kindling-warmness, the melting of the Bodhi-Heart is very uncertain; the gall secretion will increase; the feeling of bliss is always weak, and the pain induced by the warmness is great. If a qualified Dumo is kindled as it should be, the White Bodhi-Heart will melt and multiply the Red Bodhi-Heart. Dumo will also increase.

The melting of the Bodhi-Heart brings about the arising of the Four Blisses. The respective places wherein the down-coming Four Blisses arise are named in the Tantra Rdo-rje-rin-wa.

"At the Wheel of Great Bliss in the head,
The (first) bliss arises.
At the Wheel of Enjoyment [Throat],
The Superlative Bliss arises.
At the Wheel of Dharma [Heart],
The Beyond-Reach Bliss arises.
At the Wheel of Transformation [Navel] [**],
The Innate Wisdom arises.
Thus, one shall experience these Blisses."

When the Bodhi-Heart coming down from the head reaches the throat, the first Bliss arises; from the throat coming down to the heart, the Superlative Bliss arises; from the heart coming to the navel the Beyond-Bliss arises; from the navel coming to the top of the precious organ the Innate-Bliss arises.

As to the up-going Blisses, the Tantra says:

"The up-going Blisses arise like this:
At the Wheel of Transformation arises the Bliss.
At the Wheel of Dharma arises the Superlative Bliss.
At the Wheel of Enjoyment arises the great Innate-Bliss,
This is the reverse of the process of bliss-arising."