Master Lu-tsu said, since when has the expression "circulation of the light" been revealed? It was revealed by the "True Men of the Beginning of Form" (Kuan Yin-hsi). When the light is made to move in a circle, all the energies of heaven and earth, of the light and the dark, are crystallized. That is what is termed seed-like thinking, or purification of the energy, or purification of the idea. When one begins to apply this magic it is as if, in the middle of being, there were non-being. When in the course of time the work is completed, and beyond the body there is a body, it is as if, in the middle of non-being, there were being. Only after concentrated work of a hundred days will the light be genuine, then only will it become spirit-fire. After a hundred days there develops by itself in the midst of the light a point of the true light-pole (yang). Then suddenly there develops the seed pearl. It is as if man and woman embraced and a conception took place. Then one must be quite still and wait. The circulation of the light is the epoch of fire.
Translators of The Secret of the Golden Flower are Richard Wilhelm and Cary F. Baynes. If you missed any posts in this series, please utilize the Golden Flower label below.