Why a Metal Horse Can Also Be Roadside Earth
Chinese year labels can apply two different Five Phase systems to the same stem-branch pair.
Look up the Chinese label for 1990 and you may find two answers that seem incompatible. One table calls it a Metal Horse year. Another calls it Roadside Earth. Both labels can describe the same Geng-Wu year, but they come from different classification systems.
This article was developed with AI writing assistance and reviewed for factual accuracy and editorial judgment by Julian Zhu. The subject is traditional calendar and BaZi terminology, not a scientific personality test or a prediction about anyone born in that year.
Metal Horse reads the two characters
Every traditional year name contains a Heavenly Stem followed by an Earthly Branch. The Hong Kong Observatory’s Gan-Zhi table lists ten stems, twelve branches, and the sixty valid pairs formed as the two sequences advance together.
Geng-Wu is one of those pairs. Geng is a yang Metal stem. Wu is the branch associated with the Horse. Read the first character for its phase and the second for its animal, and Geng-Wu becomes Yang Metal Horse, usually shortened to Metal Horse.
That label tells you what is printed in the pair. It does not summarize a whole BaZi chart. A full chart also calculates a month, day, and hour pair, and the Day Stem becomes the Day Master used as the reference point for later relationships.
Roadside Earth comes from a second table called nayin, usually translated as “received sounds.” This table does not read Geng and Wu separately. It assigns one shared image to two neighboring names in the sixty-part sequence. Geng-Wu and Xin-Wei share the name Roadside Earth.
The result is not a contradiction:
- Metal Horse reads Geng’s phase and Wu’s animal.
- Roadside Earth reads the shared nayin image assigned to the complete Geng-Wu pair and its Xin-Wei neighbor.
The first answer comes from two characters. The second comes from the pair’s position inside another inherited classification.
Why sounds produce thirty names
There are sixty stem-branch pairs but only thirty nayin names because each name covers two consecutive pairs. Jia-Zi and Yi-Chou are Sea Metal. Bing-Yin and Ding-Mao are Furnace Fire. Geng-Wu and Xin-Wei are Roadside Earth. The pattern continues until Ren-Xu and Gui-Hai share Great Sea Water.
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Wan Minying’s 1578 Sanming Tonghui preserves the traditional explanation in its first volume on the sixty Jia-Zi. It cites an earlier account associated with Shen Kuo’s eleventh-century Dream Pool Essays: the sixty received sounds were related to sixty pitch pipes, with each pipe treated as a tonic. The text also explains why the list begins with Metal. Cast metal rings when struck, so Metal leads a classification described through sound.
That is historical correlative theory, not a claim about modern acoustics. The important structural point is simpler. Nayin treats the cycle in pairs and gives each pair of names one resonant image. Its unit is different from the single stem that produces “Metal” in Metal Horse.
Roadside Earth is an image, not a material diagnosis
The thirty names are unusually concrete. They include Metal in the Sea, Fire in the Furnace, Pine and Cypress Wood, Earth on the City Wall, Water in the Heavenly River, and Roadside Earth. A reader can easily mistake that concreteness for a literal description of a person.
The Sanming Tonghui tells readers how the images were meant to work. It presents the twelve branch positions as stages of a life, from conception through growth, maturity, harvest, and rest. Each nayin name becomes an analogy fitted to a place in that sequence. Sea Metal, for example, is described as something that has a name before it has a visible form. Great Sea Water appears at the far end as an image that gathers many rivers.
The same chapter cautions against gripping those images too tightly. They are devices for comparison inside an inherited cosmology. Roadside Earth does not mean that a person is made of Earth, lacks Metal, belongs near a road, or will have a certain temperament. It certainly does not establish health, compatibility, wealth, or future events.
Four questions hide inside “What is my element?”
An element result makes sense only after the page says what it calculated.
- Year Stem: Geng supplies Metal in Metal Horse.
- Nayin: the full Geng-Wu pair shares Roadside Earth with Xin-Wei.
- Day Master: a BaZi reading uses the Heavenly Stem of the Day Pillar as its reference point.
- Whole chart: all four pillars, their positions, the season, and hidden stems contribute to later traditional interpretation.
These answers can differ without any arithmetic error. They answer different questions with different units. A site that prints only “Your element is Earth” removes the information needed to tell which system produced the word.
I am the founder and builder of Jade Almanac. I built our sexagenary-cycle and Nayin reference so the year stem, animal, complete pair, and received-sound name remain visible in the same row. The table is useful because it lets a reader check the label before accepting an interpretation.
For a birthday near the beginning of the Chinese year, one more question comes first: did the source change the year at Lunar New Year or at Li Chun? Different calendar and BaZi contexts use different boundaries. Once the year pair is fixed, the labels should be stated precisely.
For Geng-Wu, “Metal Horse” and “Roadside Earth” can both be correct. One names the stem and branch. The other names the sound-image assigned to that pair. Neither one, by itself, is a complete reading of a person.
