Ulune

Geng Zi · Yang Metal Rat

In Chinese: 庚子 gēngzǐ

Chinese cosmologyEn françaisGeng Zi · Rat de Métal yang

Geng Zi, the Yang Metal Rat: cold ore over midwinter water, sharp, clear and determined, a strength that flows into its branch.

Meaning

Geng Zi sets the ore over the Rat’s deep winter water, Metal producing the phase below it. The tradition reads a sharp, determined mind that gives freely of its strength, and does well to keep some for itself.

Geng over Zi: yang Metal over yang Water, a stem that produces its branch, as Metal produces Water.

Geng, Yang Metal, is the raw ore and the axe: strong, decisive, made sharper by the forge. The Rat is quick, alert and resourceful.

The zodiac reads a Geng Zi year as the Metal Rat’s. The Metal Rat is sharp and determined: it knows what it wants, judges quickly and holds its course. Ambitious and loyal to its own, it softens its edges by trusting others a little more.

Its Na Yin, shared with Xin Chou, is Earth on the wall (壁上土 bìshàng tǔ): a sound of Earth, heard beside the pillar’s Metal and Water.

In practice

  • As a year, from Lichun, around 4 February: 1840, 1900, 1960, 2020, 2080, 2140 and 2200, in the 1800–2200 table.
  • As a month: the Rat month of every Bing or Xin year, opened by Major Snow, as in the solar years 2021 and 2026.
  • As a day, every sixty days: in 2026, on 26 January, 27 March, 26 May, 25 July, 23 September and 22 November.
  • As an hour: the Rat’s double hour, 23:00–01:00, of Ding and Ren days, whose first hour it is: by default Ulune’s day begins at 23:00.
  • As a day pillar, its stem is the Day Master, Geng, sitting on Zi, the partner palace: Zi holds Gui, Geng’s Hurting Officer, and Geng stands at its Rest stage there.
  • As a luck pillar or a year, it brings each Day Master the god of its stem and the god of its branch’s main qi: the Correspondences below give them for all ten.

Across traditions

  • In Japan, Korea and Vietnam the same pillar is kanoe-ne, gyeongja and Canh Tý, with each language’s readings of 庚 and 子.

How Ulune calculates it

Geng Zi is the 37th of the sixty pillars: the 7th of the ten stems over the 1st of the twelve branches, which the cycle moves on one step together, so that a stem only ever meets the branches of its polarity. Ulune counts a year’s pillar from Lichun, 1984 being Jia Zi; a month’s twelve a year through the cycle, from Bing Yin in the Tiger month of 1984 (the rule of the five tigers); a day’s by the count of days, 1 January 2000 being Wu Wu; an hour’s twelve a day (the rule of the five rats).

Geng Zi belongs to the ten-day week from Jia Wu to Gui Mao, whose stems meet the branches from Wu to Mao and leave out Chen and Si: for a day pillar of this week, those are the empty branches. Its Na Yin is the 19th of the thirty, one for each two pillars.

Correspondences

CorrespondenceGeng Zi
Characters, pinyin庚子 gēngzǐ
Place in the cycle37 of 60
StemGeng, yang Metal
BranchZi, the Rat, yang Water
Hidden in the branchGui 100
Stem and branchMetal produces Water
Na YinEarth on the wall, with Xin Chou
Its stem’s stage in its branchRest
Ten-day weekJia Wu to Gui Mao; empty branches Chen and Si
Its stem, for each Day MasterJia → Seven Killings, Yi → Direct Officer, Bing → Indirect Wealth, Ding → Direct Wealth, Wu → Eating God, Ji → Hurting Officer, Geng → Companion, Xin → Rob Wealth, Ren → Indirect Resource, Gui → Direct Resource
Its branch’s main qi, for each Day MasterJia → Direct Resource, Yi → Indirect Resource, Bing → Direct Officer, Ding → Seven Killings, Wu → Direct Wealth, Ji → Indirect Wealth, Geng → Hurting Officer, Xin → Eating God, Ren → Rob Wealth, Gui → Companion
Years, 1800–22001840, 1900, 1960, 2020, 2080, 2140, 2200
MonthRat month of Bing and Xin years
HourRat hour, 23:00–01:00, of Ding and Ren days
Before and afterJi Hai, Xin Chou
Japanese, Korean, VietnameseKanoe-ne, gyeongja, Canh Tý
  • Geng · Yang MetalThe seventh Heavenly Stem, yang Metal: raw ore, the axe and the blade, a strength that cuts, decides and changes what it touches.
  • Zi · RatThe first Earthly Branch, yang Water: the Rat, the north, midwinter and midnight, the moment when the year’s new life first stirs underground.
  • RatThe first of the twelve animals, the Rat of the branch Zi: quick, alert and resourceful, the one who notices chances others miss and makes much of little.
  • Earth on the wallEarth on the wall, the Na Yin of Geng Zi and Xin Chou: earth made into plaster, a fine, useful surface sheltering a home.
  • Ji Hai · Yin Earth PigJi Hai, the Yin Earth Pig: garden soil by winter water, a soft bank around a pool, kind, patient and comfortable.
  • Xin Chou · Yin Metal OxXin Chou, the Yin Metal Ox: the jewel in frozen earth, fine metal held in its storehouse, principled and unshakable.

Sources

  • Sima Qian, Shiji, c. 94 BC
  • Ban Gu, Hanshu, 1st century
  • Xu Sheng (ed.), Yuanhai Ziping, Song dynasty
  • Wan Minying, San Ming Tong Hui, 16th century
  • Joseph Needham, Science and Civilisation in China, vol. 3, 1959