Lin Gengfan-Illustrated Taoist Astronomy, Calendar and Arithmetic – Purple Wei Dou Shuo Reasoning Volume (579 pages).pdf

Lin Gengfan-Illustrated Daoist Astronomy and Calendar – Purple Wei Dou Shuang Numerology Volume (574 pages).pdf

Lin Gengfan “Illustrated Taoist Astronomy, Calendar and Calculus-Ziwei Doushu Volume 2 Reasoning Volume”

Lin Gengfan “Illustrated Taoist Astronomy and Calculus-Ziwei Doushu Volume 1 Numerology Volume”

Lin Gengfan’s “Ziwei Doushu Book”