(excerpt)
If people want to refine elixir to attain the Way of long life and eternal vision, there is no path without this mysterious female. Is this not the root of heaven and earth?
When practitioners lower their eyelids and turn the light around to become like Hundun– undifferentiated wholeness without knowledge–it causes the ordinary mind to die. Suddenly there is a feeling and a movement, activating unified awareness.
This gives birth to the mind of the Way. This is what is meant by being the original spirit in stillness, and becoming true intent in action.
Once foetal breathing moves, do not keep intensely fixated on the Dan Tian. Be poised neither inside nor outside while observing its ascent and descent, coming and going. Relaxed and lively, you can then attain true foetal breathing.
The Fat Monk 