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I Ching Birth Hexagram · Hexagram 8 of 64

Hexagram 8, 比 Bǐ: water gathering on the ground

比 Bǐ is hexagram 8 of the Zhouyi, which sets water over the earth, where it settles and runs together. The character means to stand side by side or to ally, and the tradition reads the hexagram as union around one centre, the single yang line in the ruler's place, with a warning to those who come late.

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Hexagram 8, 比 Bǐ, drawn as six lines numbered from the bottom: broken, broken, broken, broken, whole, broken. The lower, inner trigram is 坤 Kūn, Earth; the upper, outer trigram is 坎 Kǎn, Water. 1 2 3 4 5 6 Upper, outer 坎 Kǎn, Water Lower, inner 坤 Kūn, Earth 8 比 Bǐ Lines numbered from the bottom
The figure of 比 from the bottom line up: Earth inside, Water outside. Five broken lines, one whole.

Facts

Number
8 of 64, in the received order
Character and pinyin
比 Bǐ ䷇
Our title
Alliance
Lines, bottom to top
yin, yin, yin, yin, yang, yin
Lower trigram (inner)
☷ 坤 Kūn, Earth
Upper trigram (outer)
☵ 坎 Kǎn, Water
Within (nuclear)
23 剝 Bō, Stripping Away
King Wen pair
7 師 Shī, The Army
Legge's name (1882)
Pî
Part of the text
The first part (上經), 1 to 30

Meaning

Water poured on the ground does not stay apart; it finds the low places and joins. That is the image of 比, and the character, two figures standing side by side, means to compare, to stand beside, to ally. One whole line sits in the fifth place, the ruler's seat, and the five broken lines gather round it; the tradition reads the figure as a union with a worthy centre.

The Judgment is favourable but turns the question back on the centre. Let the one people join, it says, examine himself as if by divination, to see whether his virtue is great, constant and firm; if it is, there is no error, the restless come to him, and those who come too late fare badly. The Image places the scene in the past: the early kings set up the states and kept close ties with their princes. In our reading the hexagram asks two things at once: whether the centre deserves to be joined, and whether one is joining for the right reasons and in time.

The lines

The lines grade the ways of joining. The first does it with sincerity, full "as an earthenware vessel is of its contents", in Legge's words; the second joins from within; the third seeks union with the wrong people; the fourth looks beyond itself to the centre. The fifth gives the hexagram's most famous picture, the king hunting on three sides only and letting the game that runs ahead escape: union offered, never forced. The top line seeks to join with no beginning to stand on, and the text marks it with ill fortune.

Its pair is 師, hexagram 7, the army; within 比 lies 剝, hexagram 23.

In the birth cast

The time cast arrives at 比 when the year, month and day leave 6 on eight, which puts 坎 water above, and the same total with the hour added leaves 0, counted as 8, which puts 坤 earth 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 (初六) moving: becomes 3 屯 Zhūn, First Shoots
  • Line 2 (六二) moving: becomes 29 坎 Kǎn, The Abyss
  • Line 3 (六三) moving: becomes 39 蹇 Jiǎn, Obstruction
  • Line 4 (六四) moving: becomes 45 萃 Cuì, Gathering
  • Line 5 (九五) moving: becomes 2 坤 Kūn, Earth's Yielding
  • Line 6 (上六) moving: becomes 20 觀 Guān, Looking Out

Lines 2 to 5 give the hexagram within, 23 剝 Bō, Stripping Away. 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)
坤 yielding, compliant below; 坎 sinking, perilous above, in our English sourced
Trigram family places (Shuogua)
mother below, middle son above sourced
Trigram body and animal images (Shuogua)
belly and ox below; ears and pig above sourced
Trigram phases (a classical correspondence: the Plum Blossom text's table)
Earth below, Water 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: 7 師 Shī, The Army; every line flipped: 14 大有 Dà Yǒu, Great Possession sourced
Human Design gate
Gate 8, from 54.5° to 60.125° of the tropical zodiac on Ra Uru Hu's wheel (1987): a modern placing, not the I Ching's sourced
Our English title
Alliance: EsoTerrier's own, from the sense of 比 our construction

How the schools read it

The Zhouyi, in Legge's translation (1882)
“Those who have not rest will then come to him; and with those who are (too) late in coming it will be ill.”
The Image (大象), one of the Wings, in our paraphrase
Water over the earth; the ancient kings set up the states and kept a close relation with their princes.
The Plum Blossom method (Ming)
A figure reached by numbers: 坎 above when the year, month and day leave 6 on eight, 坤 below when the same total with the hour leaves 0.
Human Design (Ra Uru Hu, 1987)
Takes the number for its gate 8 and puts it on the zodiac; its own reading, which we do not quote.
EsoTerrier
Water on the earth: people drawing together around a centre worth joining; deciding early is favoured, and those who hold back to the end find the circle closed.

Claims about it

  • Gate 8 of Human Design, at 54.5° to 60.125° of the zodiac, is where the I Ching itself places hexagram 8.

    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 比 Bǐ 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.