#[ #" #H #e #a #v #e #n #l #y # #S #t #e #m #s #" #, # #" #F #i #v #e # #C #o #m #b #i #n #a #t #i #o #n #s #" #, # #" #H #e #t #u #" #, # #" #A #s #t #r #o #n #o #m #y #" #, # #" #F #i #v #e # #P #h #a #s #e #s #" #, # #" #M #e #t #a #p #h #y #s #i #c #s #" #]

Heavenly Stem Combinations: From Hetu-Luoshu to Astronomical Conjectures

Heavenly Stem Five Combinations are one of the most foundational yet enigmatic doctrines in Chinese metaphysics. This article takes readers through the math of Hetu, the astronomical correspondences, and various schools’ conjectures to show how the doctrine reflects a cosmic rhythm.

January 28, 2026 7 min read PDF Markdown

1. Yin-Yang Companion Theory

The most accessible explanation. Jia is Yang Wood, upright and firm; Ji is Yin Earth, soft and accommodating. Wood restrains Earth in the same way a husband (Jia) restrains a wife (Ji). Yang wood overcomes Yin earth yet is held—together they produce the stable Earth image because Jia “roots” into Ji’s soil.