Geng Yin (庚寅) Jiazi Pair Explained: The 27th of 60 Combinations

The Geng Yin Pair (庚寅): Jiazi Explained

Geng Yin (庚寅) is the 27th of the sixty Jiazi pairs, the stem-branch combinations that structure the entire Chinese calendar, BaZi charts and Qi Men Dun Jia timing alike. In the current cycle its years are 2010 and 2011, followed by its partner pair Xin Mao (辛卯) completing the same nayin group.

If that sounds abstract, think of the sixty pairs as the alphabet of Chinese time. Every year, month, day and hour in these systems is written in one of these sixty combinations, so understanding a pair is understanding the vocabulary the whole system speaks.

Geng Yin Quick Facts

What the Geng Yin Pair Means: A Commanding Pair

Classical analysis of a stem-branch pair starts with their elements, and here the stem commands the branch: Metal controls Wood. The core masters the environment, a pairing that reads as authority over circumstances, initiative over situation.

This relation is why two pairs can both be called auspicious while feeling completely different in a life. The nourishing pairs suggest support arriving from the environment; the commanding pairs suggest the person taking charge of the environment; the disciplining pairs suggest life itself as the teacher. None of the five relations is good or bad. Each is a style of exchange between a person’s core and their ground.

The Two Years of the Wood of the Pine and Cypress Nayin Group

Geng Yin (庚寅) and Xin Mao (辛卯) share the nayin Wood of the Pine and Cypress (松柏木): evergreen wood: endurance, integrity, green through every winter. People born in 2010 carry the Metal Tiger year, and people born in 2011 carry the Metal Rabbit year. The year-by-year detail, including the Li Chun boundary and the branch interactions, lives on the dedicated year pages, and the full chart method is in the BaZi chart guide.

Year-by-year readings for this pair: BaZi 2010, BaZi 2011.

Because the cycle repeats every sixty years, Geng Yin years also include 1950, 1890, and will return in 2070. The pair is the same; the generations differ, which is a nice reminder that a chart describes energies, not destinities.

Where Jiazi Pairs Appear in Your Chart

Every pillar in your BaZi is a jiazi pair: year, month, day and hour each carry one of these sixty combinations. The day pillar, most important of the four, has a one-in-sixty chance of being Geng Yin, and practitioners meet the pair again in decade luck cycles, annual years and QMDJ charts. If you want to see how the pairs are actually extracted from birth data, the beginner step-by-step guide walks through the whole process in one sitting.

The Tiger Branch in Geng Yin

The branch carries the zodiac identity of the pair, here the Tiger, and with it the layer people actually feel in daily life. Every Tiger year, month, day or hour written with this branch carries the same family of themes: the tendencies, the strengths and the friction points that follow the Tiger wherever the pair appears in a chart. Readers who want the full Tiger picture, from branch interactions to 2027 timing, will find it in the zodiac and BaZi references on this site.

How to Find Your Own Jiazi Pair

Any BaZi chart lists the four pillars, and each pillar is one of these sixty pairs. Look up the day pillar, which most software and printed charts mark clearly, and the pair name written beside it is the one to study first. The year pillar pair, like the one this page describes when you were born in 2010, is the background layer; the day pair is the core. Both are worth knowing, and both take under a minute to find with the beginner plotting guide.

Geng Yin FAQ

Which years are Geng Yin years?

In the current cycle, 2010 and 2011. Going back: 1950 and 1951, 1890 and 1891. The pair returns every sixty years, and exact year boundaries follow Li Chun, around February 4, not Chinese New Year; the Chinese New Year dates reference has the exact boundaries.

What does it mean if my day pillar is Geng Yin?

Your core self carries a commanding pair signature. In element terms, the stem commands the branch: Metal controls Wood. The core masters the environment, a pairing that reads as authority over circumstances, initiative over situation. How that plays out in your life depends on the rest of the chart, which is exactly what a full reading addresses.

What is the nayin of Geng Yin?

Wood of the Pine and Cypress (松柏木), shared with Xin Mao. Nayin is the poetic element nickname attached to each pair, a background texture in classical readings rather than the headline.