Heavenly Stems: Quick Reference

The ten Heavenly Stems are the elemental symbols that sit at the top of each pillar in a Ba Zi chart. They encode elemental force: Wood, Fire, Earth, Metal, Water, each in yin or yang polarity. One of the ten is your Day Master: the stem atop your day pillar, which represents you directly.

For a full explanation of what the stems are, how yin and yang polarity changes their character, and how they generate the Ten Gods in your chart, see the Heavenly Stems explainer.

The Ten Heavenly Stems

Origin and Background

The Heavenly Stems originate in the Chinese cosmological tradition and have been in continuous use for over two thousand years. They were originally used to count days and label years before they became the elemental vocabulary of systems like Ba Zi and Chinese medicine.

The ten stems cycle through the calendar in sequence, paired with the twelve Earthly Branches to produce the sixty-combination sexagenary cycle that underlies the Chinese calendar. Every day, month, and year lands on a specific stem-branch pair, and those pairings at the moment of your birth are what your Ba Zi chart captures.

Role in the Ba Zi Chart

Your chart contains four stems, one per pillar, running across the top row. The year stem describes your generational era. The month stem describes your formative environment and public face. The day stem is your Day Master: you. The hour stem describes your inner life and private ambitions.

Each stem stands in a specific elemental relationship to your Day Master, generating the Ten Gods: the functional layer that tells you what role each element plays in your life specifically. The stems are the vocabulary; the Ten Gods are the grammar that makes them meaningful in context.