3. Water and fire are yin and yang, yin and yang are essence and life,
essence and life are body and mind, body and mind are spirit and energy.
Once you withdraw to rest your vital spirit and are not influenced by
objects, then this is true intercourse, as of course when you sit in profound
silence.
XII. The Cycle
1. For the complete cycle, energy is not the main thing; mental attainment is
the sublime secret. If you wonder what it ultimately is, the cycle helps