Professor Bodiford,

You wrote:

The one in the lower belly is water. The one in the heart is fire. The watery moon can seen as the point where these two cakra intersect. In Chinese medicine, it is related to the triple burner (or triple heater).
Do you have any other information on the relationship between suigetsu and the triple heater in this context? The water/fire imagery is pretty standard for Chinese/Daoist internal alchemical meditations, and I know of the standard Zhouyi associations with that process (kan and li meeting, etc.). But the correlation between that image and the Triple Heater is a new one for me. I can imagine several possible explanations, but they are pretty speculative and abstract. Any textual references you have would be greatly appreciated, since this idea intrigues me.