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Zi Wei Dou Shu (Purple Star Astrology) · Major star 9 of 14

Tan Lang 貪狼, the peach-blossom star of desire

Tan Lang 貪狼 is the first star of the Northern Dipper in the 紫微斗數全書, two palaces ahead of Tian Fu: the peach-blossom star of desire and appetite, whose breath is wood and body water, and which the text calls a star of both good and bad.

The twelve palaces of the board, 巳 午 未 申 along the top, 辰 and 卯 down the left, 酉 and 戌 down the right and 寅 丑 子 亥 along the bottom, each marked with Tan Lang's brightness there by the 全書's seven-level table: brilliant (廟) in 丑, 辰, 未, 戌; weak or fallen in 巳, 亥. The brilliant palaces are outlined, and 貪狼 is written in the centre. 子 旺 strong 丑 廟 brilliant 寅 平 neutral 卯 利 beneficial 辰 廟 brilliant 巳 陷 fallen 午 旺 strong 未 廟 brilliant 申 平 neutral 酉 利 beneficial 戌 廟 brilliant 亥 陷 fallen 貪狼
Tan Lang's brightness in each of the twelve palaces, by the 全書's seven-level table: the brilliant palaces outlined, the weak and fallen ones dashed. 寅 sits at the bottom left, as charts draw the board.

Facts

Order
9 of 14, in the order of the placing verse (安南北斗諸星訣)
Characters
貪狼 Tānláng; simplified 贪狼
On our chart
Wolf; in detail, Tan Lang · Wolf Star ("Greedy Wolf")
Series and place
Tian Fu series (天府星系); two palaces ahead of Tian Fu
Element (全書)
Water in body, wood in breath (其氣屬木,體屬水)
Dipper seat (全書)
The first star of the Northern Dipper (北斗第一)
Epithet (化氣)
桃花, peach blossom; the juan 2 list adds 殺
Palace it masters (全書)
None: it "governs blessing and harm" (主禍福)
Brilliant (廟) in
丑、辰、未、戌
Weak (不) or fallen (陷) in
巳、亥
Transformations (common table)
化祿 in 戊 years; 化權 in 己 years; 化忌 in 癸 years
Life or Body Master
Life Master (命主) for a Life Palace in 子
Our gloss
Desire, charm and versatility; appetite for experience (EsoTerrier's wording)

Meaning

The 全書's dialogue begins:

貪狼北斗解厄之神,第一星也。

In our translation: Tan Lang is the Northern Dipper's spirit that resolves hardship, its first star.

The lines under 希夷先生 explain its epithet: 「其氣屬木,體屬水,故化氣為桃花」, its breath is wood and its body water, so its epithet is peach blossom, the Chinese image of desire and attraction. It is 「主禍福之神」, the spirit that governs blessing and harm alike. A person with it is deep in contrivance and far-seeing in plans, and 「隨波逐浪,愛憎難定」: drifts with the waves, with loves and hates hard to fix. It is a learner of unusual arts, a lover of song and company, and with Fire or Bell it can rise high.

The 形性賦 calls it 「善惡之星」, a star of good and bad: tall and upright in its strong palaces, stubborn and unruly out of them. That is a sketch of a type in the manner of its time.

The name means "greedy wolf". Our chart calls it the Wolf and keeps the literal "Greedy Wolf" only in quotation marks in its detail label; our gloss reads: desire, charm and versatility; appetite for experience.

The name

貪狼 is the first of the seven names the Sui-dynasty 五行大義 quotes for the stars of the Northern Dipper, the one it gives 天樞 (Dubhe), and the Daoist Northern Dipper scripture repeats it. The chart borrows the name and observes nothing. Chinese feng shui gives it to the number one of the nine stars, the star Nine Star Ki calls One White Water.

On the board

Tan Lang is two palaces ahead of Tian Fu. It shares a palace with Wu Qu in 丑 or 未, Zi Wei in 卯 or 酉 and Lian Zhen in 巳 or 亥, and stands alone in 子, 寅, 辰, 午, 申 and 戌. It is brilliant (廟) in 丑, 辰, 未 and 戌 and fallen (陷) in 巳 and 亥. In the common table it takes 化祿 in a 戊 year, 化權 in a 己 year and 化忌 in a 癸 year. It is the Life Master (命主) when the Life Palace is in 子.

What this page leaves out

Much of the 全書's dialogue on Tan Lang condemns drinking, gambling, theft and lust, and the text's sayings about it are among its harshest. We record that the text speaks so and repeat none of it; on our pages the star names a theme, desire and appetite, and judges no one.

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.

諸星問答論, the opening line
「貪狼北斗解厄之神,第一星也。」 Tan Lang is the Northern Dipper's spirit that resolves hardship, its first star sourced
形性賦, form and nature
「貪狼為善惡之星,入廟必應長聳,出垣必定頑囂」 Tan Lang is a star of good and bad: in its strong palaces tall and upright, out of them stubborn and unruly; a sketch of a type, never a reading of anyone's body sourced
Namesake in the sky (symbolic)
天樞, the first star of the Northern Dipper (Dubhe, α Ursae Majoris), named 貪狼 in the Sui 五行大義's quotation; the chart does not read it sourced
Dipper by series
Listed as a Southern Dipper star on some practitioner pages because it belongs to the Tian Fu series; the 全書 seats it first in the Northern Dipper disputed
Element, modern tables
Yang wood with yang water in one practitioner table, yin water with yang wood in another disputed
English names elsewhere
"Greedy Wolf" (English Wikipedia and most sites), which our chart keeps only in quotation marks; wolf (iztro); Desire and Opportunity on other sites sourced
Our short name and gloss
Wolf: Desire, charm and versatility; appetite for experience. our construction

How the schools read it

紫微斗數全書, the lines under 希夷先生
Its breath is wood and its body water, "so its epithet is peach blossom"; the spirit that governs blessing and harm. Deep in contrivance and far-seeing, it "drifts with the waves, its loves and hates hard to fix" (隨波逐浪,愛憎難定).
紫微斗數全書, 諸星問答論
A learner of unusual arts and a lover of song and company; with Fire or Bell it can rise high. The rest of the dialogue is moral condemnation in the idiom of its age.
紫微斗數全書, 形性賦
A star of good and bad: tall and upright in its strong palaces, stubborn and unruly out of them.
Three-harmony practice (三合派)
Reads it as the first of the peach-blossom stars, with Lian Zhen the second, and above all by its company.
English teaching
"Greedy Wolf" nearly everywhere; Desire or Opportunity on a few sites.
EsoTerrier
Short name Wolf, the literal "Greedy Wolf" kept in quotation marks in the detail label; our gloss names desire, charm and versatility. No reading of outcome.

Claims about it

  • Tan Lang is the first star of the Dipper, and the chart reads where it stands.

    disputed

    What the record shows: 貪狼 is the Sui 五行大義's name for the first Dipper star, and the 全書 seats Tan Lang there; but the chart places it by counting from Tian Fu.

  • As a star of the Tian Fu series, Tan Lang belongs to the Southern Dipper.

    false

    What the record shows: The series is a placement grouping. The 全書 seats Tan Lang first in the Northern Dipper.

  • The text's lines on Tan Lang condemn a person's conduct and foretell ruin.

    unverified

    What the record shows: The 全書 is at its most moralising here. Those lines are its historical language; none of them is ours.

Elsewhere on EsoTerrier

Sources

Primary texts (2)
  1. 紫微斗數全書, juan 1 to 3, attributed to Chen Tuan; a Ming manual, the text labelled Qing on Wikisource, which names no source edition. Chinese Wikisource transcription; our translations. zh.wikisource.org/wiki/紫微斗數全書
  2. 蕭吉, 五行大義 (Sui, 581 to 618), juan 4 and 5, quoting the 黃帝斗圖 for the names of the seven Dipper stars. Chinese Wikisource. zh.wikisource.org/wiki/五行大義/4
Studies and other sources (4)
  1. SylarLong and contributors, iztro 2.6.1, an open-source Zi Wei Dou Shu library (MIT licence), our test oracle; nothing of it ships. github.com/SylarLong/iztro
  2. "Zi Wei Dou Shu", English Wikipedia (orientation and the English names). en.wikipedia.org/wiki/Zi_Wei_Dou_Shu
  3. A practitioner's table of the five-phase and yin-yang attributes of the major stars, 2018 (facts only). hansyuan0715.pixnet.net/blog/posts/17238043287
  4. A practitioner's teaching page on the fourteen major stars, 2021 (facts only). 88say.com/default.aspx?uclId=doc%5Bpq%5Ddoc&id=4863
Our own research (2)
  1. EsoTerrier, Zi Wei Dou Shu research: the calculation, the schools, the conventions and the naming, 9 to 13 October 2026.
  2. EsoTerrier calculation engine, the Zi Wei Dou Shu 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.

Chinese quotations are from public-domain texts as transcribed on Chinese Wikisource (CC BY-SA 4.0); the translations and readings are EsoTerrier's own.