Mr. Morris,
I'm not familiar with the english term (Except for the fact that those two heavenly bodies kanji make up the meibukan patch. Do you know what the Japanese terminology is in reference to the sequence you mentioned?
I can see how such a term might have come about. One technique waning as the other rises...I'll ask my teacher about it tomorrow and get back with you on it.
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All streams flow to the sea because it is lower than they are. Humility gives it its power.