This is a book chapter by Michael Winn in Daoist Body Cultivation, editor Livia Kohn.
If one abstains from intercourse,
the spirit has no opportunity for expansiveness.
Yin and yang are blocked and cut off from one another.
— Sunü jing (Simple Woman’s Classic; Wile 1992, 7)
It coffers a detailed overview of 3 topics:
- medical sexology
- bedroom arts
- sexual alchemy for spiritual evolution