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I Ching Birth Hexagram · Hexagram 17 of 64

Hexagram 17, 隨 Suí: the strong following the glad

隨 Suí is hexagram 17 of the Zhouyi, which puts thunder inside the lake: the strong, moving trigram resting beneath the glad one. The character means to follow, and the tradition reads the hexagram as following in the right way, adapting to the time without losing one's footing, on the single condition of firmness.

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Hexagram 17, 隨 Suí, drawn as six lines numbered from the bottom: whole, broken, broken, whole, whole, broken. The lower, inner trigram is 震 Zhèn, Thunder; the upper, outer trigram is 兌 Duì, Lake. 1 2 3 4 5 6 Upper, outer 兌 Duì, Lake Lower, inner 震 Zhèn, Thunder 17 隨 Suí Lines numbered from the bottom
The figure of 隨 from the bottom line up: Thunder inside, Lake outside. Three broken lines, three whole.

Facts

Number
17 of 64, in the received order
Character and pinyin
隨 Suí ䷐
Our title
Following
Lines, bottom to top
yang, yin, yin, yang, yang, yin
Lower trigram (inner)
☳ 震 Zhèn, Thunder
Upper trigram (outer)
☱ 兌 Duì, Lake
Within (nuclear)
53 漸 Jiàn, Step by Step
King Wen pair
18 蠱 Gǔ, Repairing Decay
Legge's name (1882)
Sui
Part of the text
The first part (上經), 1 to 30

Meaning

Thunder, the eldest son, has gone down beneath the lake, the youngest daughter: strength places itself under gladness and moves with it. 隨 means to follow, and the hexagram looks at following from both sides, the one who goes after and the one who is gone after. Its Judgment is all promise with one condition attached: great progress, provided there is firmness and correctness, and then no error.

The Image is an autumn picture, thunder lying quiet inside a marsh, and its lesson is simple: when it grows dark, the superior man goes indoors to rest. In our own reading, 隨 is about adapting to the hour rather than forcing one's own, and about knowing what one follows and why. The pair it forms with hexagram 18 sets willing adjustment beside the repair of what neglect has spoiled.

The lines

The lines turn on choosing whom to follow. The first changes what it pursues and goes out of its own gate to find companions, and gains by it. The second and third are a matched pair: one "cleaves to the little boy, and lets go the man of age and experience", in Legge's English, and the other does the reverse and gets what it seeks. The fourth is followed by others and is warned that even then trouble comes unless its sincerity is plain. The fifth is a ruler sincere in fostering what is good; the top line is bound fast to that sincerity, and the king makes his offering on the western mountain.

Its pair, 蠱, is both its inverse and its opposite, as happens with only four pairs in the book; within 隨 lies 漸, hexagram 53.

In the birth cast

The time cast arrives at 隨 when the year, month and day leave 2 on eight, which puts 兌 lake above, and the same total with the hour added leaves 4, which puts 震 thunder below. Which line moves depends on what the whole total leaves on six, and each line turns the figure into a different hexagram:

  • Line 1 (初九) moving: becomes 45 萃 Cuì, Gathering
  • Line 2 (六二) moving: becomes 58 兌 Duì, Openness
  • Line 3 (六三) moving: becomes 49 革 Gé, Changing the Hide
  • Line 4 (九四) moving: becomes 3 屯 Zhūn, First Shoots
  • Line 5 (九五) moving: becomes 51 震 Zhèn, Shock
  • Line 6 (上六) moving: becomes 25 无妄 Wú Wàng, Without Pretence

Lines 2 to 5 give the hexagram within, 53 漸 Jiàn, Step by Step. Everyone born in the same lunar day and double hour has the same cast, so the figure describes a moment, not a person.

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.

Trigram virtues (Shuogua, chapter 7)
震 moving, startling below; 兌 pleased, open above, in our English sourced
Trigram family places (Shuogua)
eldest son below, youngest daughter above sourced
Trigram body and animal images (Shuogua)
feet and dragon below; mouth and sheep above sourced
Trigram phases (a classical correspondence: the Plum Blossom text's table)
Wood below, Metal above. The Han assignment of 梅花易數, book 1, also used by Jing Fang; not stated as such in the Zhouyi sourced
Inverse and opposite
Upside down: 18 蠱 Gǔ, Repairing Decay; every line flipped: 18 蠱 Gǔ, Repairing Decay sourced
Human Design gate
Gate 17, from 3.875° to 9.5° of the tropical zodiac on Ra Uru Hu's wheel (1987): a modern placing, not the I Ching's sourced
Our English title
Following: EsoTerrier's own, from the sense of 隨 our construction

How the schools read it

The Zhouyi, in Legge's translation (1882)
“Sui indicates that (under its conditions) there will be great progress and success. But it will be advantageous to be firm and correct.”
The Image (大象), one of the Wings, in our paraphrase
Thunder hidden in the midst of a marsh; the superior man goes indoors to rest when it is getting dark.
The Plum Blossom method (Ming)
A figure reached by numbers: 兌 above when the year, month and day leave 2 on eight, 震 below when the same total with the hour leaves 4.
Human Design (Ra Uru Hu, 1987)
Takes the number for its gate 17 and puts it on the zodiac; its own reading, which we do not quote.
EsoTerrier
Thunder within the lake: adapting to the time, as one goes in to rest at nightfall; to be followed, first follow what is right, and know what you hold on to and why.

Claims about it

  • Gate 17 of Human Design, at 3.875° to 9.5° of the zodiac, is where the I Ching itself places hexagram 17.

    false

    What the record shows: The wheel is Shao Yong's circle rotated by Ra Uru Hu in 1987 to 1989 so that hexagram 41 starts at 2° Aquarius. No Chinese source we found puts the hexagrams on degrees of the zodiac.

  • Being born under 隨 Suí fixes a person's character.

    unverified

    What the record shows: A modern reading with no source in the tradition. The Zhouyi has no birth hexagram; the cast reads a figure, not a person, and everyone born in the same lunar day and double hour shares it.

Elsewhere on EsoTerrier

Sources

Primary texts (6)
  1. James Legge (trans.), The Yî King, Sacred Books of the East XVI. Oxford: Clarendon Press, 1882. Public domain; quoted briefly and credited. en.wikisource.org/wiki/Sacred_Books_of_the_East/Volume_16
  2. 梅花易數 (Meihua yishu, the Plum Blossom method), attributed to Shao Yong, book 1: the time rule, the trigram numbers and phases, and the casts of the plum blossom and the peonies. zh.wikisource.org/wiki/梅花易數/卷一
  3. 周易 (Zhouyi), the received Chinese text of the hexagram and line statements with the Ten Wings. ctext.org/book-of-changes
  4. The same, the 1882 Oxford edition scanned (archive.org), for hexagrams 33 to 64 and the appendices. archive.org/details/sacredbooksofchi16conf
  5. The Unicode Standard, Yijing Hexagram Symbols, U+4DC0 to U+4DFF. unicode.org/charts/PDF/U4DC0.pdf
  6. 京氏易傳 (Jingshi yizhuan), attributed to Jing Fang, three books. zh.wikisource.org/wiki/京氏易傳
Studies and other sources (3)
  1. "King Wen sequence", Wikipedia. en.wikipedia.org/wiki/King_Wen_sequence
  2. Jovian Archive, "Gates and hexagrams in Human Design" (cited for the wheel's origin only). jovianarchive.com/pages/gates-and-hexagrams-in-human-design
  3. "Hexagram (I Ching)", Wikipedia. en.wikipedia.org/wiki/Hexagram_(I_Ching)
Our own research (5)
  1. EsoTerrier, I Ching research, 10 to 14 October 2026: the method, the validation (61 births), the variants and the lists.
  2. EsoTerrier calculation engine, the I Ching service and its reference tables (titles, glosses and readings our own).
  3. EsoTerrier, Gene Keys research, 9 October 2026: the legal and trade-mark report, on which hexagram names are free to use.
  4. EsoTerrier, Human Design research, 9 October 2026: the wheel, gate 41 at 2° Aquarius, 5.625° per gate.
  5. EsoTerrier, engine audit of 14 October 2026: the reworded titles, readings and trigram qualities, with the passages each rests on.

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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.