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Nine Star Ki · Star 7 of 9

七赤金星, Seven Red Metal: the star of the lake in autumn

七赤金星, Seven Red Metal, is the seventh of the nine stars: red, Metal, in the west palace on the right of the Lo Shu square, the place of the 兌 (Da) trigram, the lake or marsh. Japanese practitioners read a person whose year star is 七赤 as bright, charming and good with words, someone who is easily liked.

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The Lo Shu square drawn South on top, the numbers 4 9 2, 3 5 7, 8 1 6 each with its count of dots; the cell of 7, in the middle of the right column, is outlined and tinted, and labelled West, 兌宮. S N E W 4 9 2 3 5 7 8 1 6 七赤 Seven Red Metal West · 兌宮 Trigram ☱ Lo Shu · South on top
Seven Red Metal in its home palace: the middle of the right column, which is the west on a board drawn South on top.

Facts

Number
7 of 9
Japanese name
七赤金星 (しちせききんせい, shichiseki kinsei)
Literal name
Seven Red Metal Star; compact label 7 Metal
Colour and phase
Red (赤); Metal (金)
Trigram
兌 ☱ Da (Chinese Duì), the lake
Home palace
兌宮, the west: the middle of the right column
Branch of the palace
酉
Chinese forms
七赤金星; in Chinese feng shui also 七赤破軍星
House on the boards
The seventh of nine: the harvest phase
Recent years of this star
1984, 1993, 2002, 2011, 2020 (each from 立春)
Opposite palace
震宮, the east, home of 三碧
Phase relations
Generated by Earth (2, 5, 8); generates Water (1); shares Metal with 6

Meaning

Seven Red Metal is the west palace, the place of the 兌 trigram, the lake or marsh. The Shuogua gives it the full autumn: "說言乎兌", there is gladness in 兌, for it is the season in which all things rejoice. The trigram's family role is the youngest daughter.

Japanese practitioners read a person whose year star is 七赤 as bright, charming and deft, someone who is liked and who talks well; some add that the type comes into its own from the forties. Our own text calls it the lake at evening: charming, sociable and persuasive, someone who enjoys conversation and company and knows how to be liked, with indulgence, vanity and moodiness as the shadow side. The Kushi line calls the number 7 Metal and gives it early autumn, sunset and the themes of joy and fruition.

On the boards

七赤 is the star of the solar years 1984, 1993, 2002, 2011 and 2020, each from 立春. 1984 was also a 甲子 year, the first of a sixty-year cycle, and the almanacs take it as the start of the last of three such cycles in their 180-year round, the 下元; the round began with 一白 in 1864 and will begin again in 2044. In a 七赤 year the first solar month has the star 八白, so a 七赤 person born in the 卯 month, from 啓蟄 in early March to 清明 in early April, or in the 子 month, from 大雪 in early December to 小寒 in early January, has 七赤 as their month star too, and the inclination falls on the centre.

With any other month star in the centre, a 七赤 year star lands in 坤宮 (month star 1), 坎宮 (2), 離宮 (3), 艮宮 (4), 兌宮 (5), 乾宮 (6), 巽宮 (8) or 震宮 (9).

The west palace is the seventh house of the nine-step rhythm, which the tradition reads as the harvest phase, a time of enjoyment, company and the fruits of earlier effort. The tradition counts a direction auspicious for a 七赤 person where 二黒 or 八白 stands, the Earth that generates Metal (生気; never 五黄); where 六白 stands, the other Metal star (比和); or where 一白 stands, the Water that Metal generates (退気). We show these as the tradition's readings and advise no journey.

七赤 has a part in the day chart too. When a winter leap falls, the almanacs run the descending count thirty days longer, and 七赤 is the star that falls on two days running before the ascending run starts on a 甲午 day. Sonoda's pamphlet of 1930 sets out the rule; the schools still differ.

The trigram's classical correspondences

The Shuogua's lists for 兌:

  • Family member: the youngest daughter (少女).
  • Part of the body: the mouth (兌為口).
  • Image: the lake or marsh (兌為澤); Legge's translation adds a sorceress, the tongue and a sheep among its images.
  • Polarity of the trigram: yin, as one of the three daughters.

These are the trigram's symbols in a classical text. They do not describe anyone's body, and the star itself has no yin or yang in the sources we found.

Names

The Japanese name reads shichiseki kinsei: 七 seven, 赤 red, 金 metal, 星 star. The Traditional Chinese form is the same; Chinese feng shui also calls it 七赤破軍星, after 破軍, the seventh star of the Northern Dipper in the 五行大義, whose name means army breaker. The trigram is read Da in Japanese and Duì in Chinese; Zheng Xuan's commentary sends the spirit Taiyi from 乾 to 兌, the seventh step of its round. Its doubled form is hexagram 58 of the I Ching.

Correspondences

Each item with how it stands: “sourced” is in the work cited, “our construction” is EsoTerrier’s own, and “disputed” means the sources disagree.

Season in the Later Heaven circuit
Autumn: the Shuogua names the west and the full autumn for 兌, the season in which all things rejoice sourced
The Kushi line's season and hour
Early autumn and sunset, under the name 7 Metal; a modern Western reading sourced
Character taught in Japan
Bright, charming and deft; often said to come into their own from the forties sourced
Place in the 180-year cycle
The star of 1984, the 甲子 year the almanacs take as the start of the last sixty-year cycle (下元) sourced
Chinese Dipper name
破軍, the seventh star of the Northern Dipper; a name only here sourced
Our one-line image
The lake at evening our construction
Our reading of its house
The harvest phase, read as a time of enjoyment, company and the fruits of earlier effort our construction

How the schools read it

Japanese 気学
Bright, charming and deft with people and words; easily liked.
The Kushi line
"7 Metal": early autumn and sunset, joy and fruition.
Chinese feng shui (Xuan Kong)
Names the number 七赤破軍星 and reads it for the sectors of a building over time; that reading is not a trait of people and is not shown here.
Eight Mansions feng shui
A Kua number of 7 is the 兌 life trigram, from a formula that differs for men and women: a different number from the year star.
EsoTerrier
The lake at evening: charming, sociable and persuasive, someone who enjoys conversation and company, with indulgence, vanity and moodiness as the shadow side.

Claims about it

  • There is one fixed rule for the leap of the day chart.

    disputed

    What the record shows: Three methods circulate. In the common printed one, which is also Sonoda's, 七赤 is the star repeated on two days running when a winter leap falls. We follow it and mark births inside a leap window.

  • The Chinese flying-star reading of 七赤 describes the people born under it.

    disputed

    What the record shows: In Xuan Kong that reading belongs to the number in a sector of a building for a period. We show only the Chinese name, never the period reading.

  • Seven Red Metal rules a part of the body.

    unverified

    What the record shows: The Shuogua gives the 兌 trigram a part of the body as a symbol. We give it only in the trigram's block.

  • Seven Red Metal is a star in the sky.

    false

    What the record shows: It is the number 7 of the Lo Shu with its colour and phase; "star" is a counting name.

Elsewhere on EsoTerrier

Sources

Primary texts (5)
  1. James Legge, trans., The Yî King (Sacred Books of the East, vol. XVI), Appendix V, the Shuo Kwa. Oxford: Clarendon Press, 1882. archive.org/details/sacredbooksofchi16conf
  2. 周易: the 繫辭 (Great Commentary) and the 說卦 (Treatise on the Trigrams). Chinese text, Wikisource. zh.wikisource.org/wiki/周易/說卦
  3. 園田真次郎 (Sonoda Shinjirō), 干支九星閏解説: 附・三合原理. Tokyo: 大正館, 1930. NDL Digital Collection, public domain. dl.ndl.go.jp/pid/1104437
  4. 蕭吉 (Xiao Ji), 五行大義, juan 4 and 5. Sui dynasty. Chinese text, Wikisource. zh.wikisource.org/wiki/五行大義/4
  5. 周易乾鑿度 (Qian zuo du), Han apocrypha, with the commentary of 鄭玄 (Zheng Xuan, 127 to 200). Siku quanshu text, Wikisource. zh.wikisource.org/wiki/周易乾鑿度_(四庫全書本)
Studies and other sources (13)
  1. "九星", Japanese Wikipedia (orientation only). ja.wikipedia.org/wiki/九星
  2. "九星気学", Japanese Wikipedia (orientation only). ja.wikipedia.org/wiki/九星気学
  3. koyomi8.com (こよみのページ), the day-chart tables and the notes on 陰遁 and 陽遁. Facts only. koyomi8.com/sub/9sei.html
  4. 6tail, lunar-python 1.4.8 and lunar-javascript 1.7.7 (MIT licence), used only for comparison. github.com/6tail/lunar-python
  5. 9starki.com (the Kushi line, online since 1996): FAQ, toolbox and information pages. Facts only. 9starki.com/faq.htm
  6. stellica.jp, a guide to the inclination palace (2025). Facts only. stellica.jp/blog/kyusei-keishakyu-guide
  7. picora.net, pages on 同会 and the nine-year cycle (2025). Facts only. picora.net/column/kyusei/doukai
  8. nonbirito.jp, pages on the boards and the auspicious directions (2025). Facts only. nonbirito.jp/kakuhouiban-kippoui
  9. Kua number pages: yourchineseastrology.com, fengshui-expert.fr and fengshui-village.com (2025). Facts only. yourchineseastrology.com/feng-shui/direction
  10. 星林學苑, "玄空九星" (2024), on the nine stars of Xuan Kong feng shui. Facts only. 108s.tw/article/info/291
  11. David Snieckus, after Roel Hill, "Nine Star Ki" (2007), a table of the Kushi line. Facts only. davidsnieckus.com/nine-star-ki
  12. Oggi.jp (Shogakukan), "九星気学とは? 本命星の性格と運勢" (2025). Facts only. oggi.jp/6772474
  13. koyomi8.com, "三元小話", a note on the 180-year cycle (2021). Facts only. koyomi8.com/doc/mlwa/202102200.html
Our own research (2)
  1. EsoTerrier, Nine Star Ki research and validation, 10 to 14 October 2026.
  2. EsoTerrier calculation engine, the Nine Star Ki service and its documentation.

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By EsoTerrier. Written with AI assistance from our research and checked against its sources; last revised 19 October 2026. How we write these pages.

First published ; last revised . Corrections: support@esoterrier.com.