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Day Pillar 13 of 60 · Nayin Ravine Stream Water

Bing Zi (丙子) Day Pillar — Yang Fire on the Rat

The Bing Zi day pillar pairs the Bing day master (Yang Fire) with the Zi branch (Water, the Rat). Below: the computed facts, what the seat relation and twelve-stage position mean structurally, the nayin gloss, the classical reading of the spouse palace, and an instant lookup for your own pillar.

Computed facts (engine-verified)

This page is generated from the engine, not hand-written; structural facts reconcile against the methodology page.

Day master丙 Bing · Yang Fire
Day branch子 Zi (Rat) · Water
Hidden stems癸 Gui (Direct Officer, main qi)
Stage of the stem hereConception (11 of 12)
NayinRavine Stream Water · 涧下水 (shared with Ding Chou 丁丑)
Seat relationBranch controls stem (jie jiao) — traditional term: 截脚

How Bing sits on Zi

The branch controls the stem: Water bears down on Fire, so the Bing day master sits under pressure from its own base. The traditional name is 截脚 (jié jiǎo, "cutting the heel") — the seat pushes back against the self. Structurally this means the day master cannot take its own ground for granted; it is a pillar where the base tests the person, and the full chart shows what resources answer that test.

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Nayin: Ravine Stream Water

Ravine Stream Water (涧下水): water running low between cliffs — modest volume, constant direction.

The spouse palace (day branch)

In the spouse palace this is an Influence (官杀) configuration: the classical reading treats the partner-side branch as a source of structure, accountability, or pressure on the Bing day master. The structural point — stated by the tradition, not by this site — is that intimacy here comes with terms attached. Whether those terms read as support or as strain depends on the other seven characters, which is why this page stops at structure.

The main qi 癸 (Gui, Direct Officer) defines the palace's classical group: Influence.

A note on what this page deliberately does not do: the internet is full of "60 personality types" tables that assign a fixed character to each day pillar. This site rejects that framing. A day pillar is a structural position — who sits where, on what kind of ground, with which hidden tenants. The same pillar reads differently under a different month command, and no meaningful judgement exists without the other six characters. Where the tradition offers a reading, it is labelled as the tradition's; this site's own contribution is that every number and term on this page is computed, versioned, and checkable against the methodology page.

Find your own day pillar

Birth date alone is enough — the day pillar never needs a birth time. The calculation runs in your browser; nothing is sent anywhere.

Frequently asked

What is the Bing Zi (丙子) day pillar?
The Bing Zi day pillar pairs the Bing stem (Yang Fire) with the Zi branch (Water). Its computed facts: hidden stems Gui (Direct Officer), the Bing stem at the Conception stage on this branch, seat relation "undefined", and nayin Ravine Stream Water (涧下水).
How do I find my own day pillar?
Use the calculator on this page (birth date is enough — the day pillar does not need a birth time) or the full chart calculator. Your day pillar is the third pillar of the four; each of the sixty has its own page on this site with the same computed structure.
Is the Bing Zi day pillar good or bad?
Neither, on its own. The seat relation (undefined) and the Conception stage describe position and flow, not fortune. A meaningful reading needs the month command and the other six characters — any source that grades pillars as lucky or unlucky is simplifying past what the system itself claims.
What does the nayin Ravine Stream Water mean?
Nayin (涧下水) is a two-thousand-year-old classification that gives each PAIR of pillars a symbolic element-image — for Bing Zi it is "Ravine Stream Water", shared with its partner pillar Ding Chou (丁丑). It is a classical gloss layer, published here alongside the structural facts, never instead of them.

Nearby pillars

The other five pillars sharing this day master (Bing):

Bing Yin · Bing Xu · Bing Shen · Bing Wu · Bing Chen

Yi Hai ←  ·  → Ding Chou

Reference index

Every enumerable component of ba zi has its own page here. Each page is computed by the same engine and can be checked item by item — none of it is a personality table.