TL;DR: Chu Công giải mộng (周公解夢) is an anonymous folk dream-interpretation book in Classical Chinese, of unknown date, that borrows the Duke of Zhou's name rather than being his work. It records each dream omen as a seven-character phrase in 27 groups by category of object. It even has a group of omens on Buddhism and monks, so it dates from after the Han dynasty, when Buddhism had reached China.
What is the Chu Công giải mộng book?
Chu Công giải mộng (周公解夢, Zhougong Jiemeng, "The Duke of Zhou's Interpretation of Dreams") is a dream-interpretation book in Classical Chinese that circulated among ordinary people. It has no named compiler and no fixed date; the version in circulation today is an anonymous text that borrows the name of the Duke of Zhou (Chu Công Đán), younger brother of King Wu of Zhou and a key figure in consolidating the early Zhou dynasty.
Its structure is distinctive: each dream omen is written as a seven-character phrase, and the phrases are strung together in groups by category of object. The usual Classical Chinese text has 27 groups, opening with "Heaven and earth, sun and moon, stars" and closing with "Turtles and soft-shelled turtles, fish and shrimp, insects"[1].
It is a quick-reference book: a reader who has had a dream looks up the category of the object to find the matching phrase. The book sets out no theory of dreams and does not explain why one omen is good and another bad; each phrase gives only a short conclusion.
Is it really a book by the Duke of Zhou?
No. Chu Công giải mộng is not the Duke of Zhou's work. Borrowing the name of an ancient figure is common in books of thuật số and in folk texts: later writers attribute a book to a respected figure so that it is more readily trusted.
The Duke of Zhou lived around the 11th century BCE, at the start of the Western Zhou, and no text of that time records him composing a book on dreams. The text itself also shows a late date: it has a whole group of omens on Buddhism and monks, such as the phrase "诸佛菩萨大吉利" (dreaming of the Buddhas and Bodhisattvas is very auspicious)[1], while Buddhism reached China only in the Han dynasty, centuries after the Duke of Zhou.
In folk usage people still call it "the Duke of Zhou's book". That name reflects oral belief, not historical fact. Tradition attributes the book to the Duke of Zhou; modern research does not regard that as proven.
How is the book organised and classified?
Each group in the book carries a three-part title and holds many seven-character phrases. The table below gives the titles of six of the 27 groups and one sample phrase from each, quoted from the Classical Chinese text[1].
| Group no. | Group title in the book | Sample phrase | Meaning of the phrase |
|---|---|---|---|
| 1 | 天地 日月 星辰 (heaven and earth, sun and moon, stars) | 天门开贵人荐引 | The gate of heaven opens: a benefactor will recommend you |
| 2 | 地理 山石 树木 (land, mountains and rocks, trees) | 地动主迁官位吉 | The earth shakes: promotion in office, auspicious |
| 12 | 船车 游行 物价 (boats and carts, travel, prices) | 乘船渡江河得官 | Crossing a river by boat: gaining an official post |
| 17 | 文书 笔墨 兵器 (documents, brush and ink, weapons) | 读书文写字大吉 | Reading books and writing characters: very auspicious |
| 19 | 佛道 僧尼 鬼神 (Buddhism and Daoism, monks and nuns, spirits) | 烧香礼拜皆大吉 | Burning incense and bowing in worship: all very auspicious |
| 27 | 龟鳖 鱼虾 昆虫 (turtles, fish and shrimp, insects) | 群鱼游水主有财 | A shoal of fish swimming: wealth to come |
The table only shows the organisation; it is not a full lookup list, since each group holds several dozen phrases.
Writing each omen as a seven-character phrase makes the book easy to remember and to pass on by word of mouth, which is probably one reason it lasted so long among ordinary people despite having no named compiler.
Why does the book borrow the name of the Duke of Zhou?
In Sinitic culture the Duke of Zhou is tied to dreams mainly through one remark by Confucius. The Analects, chapter Shu Er, records his lament: "How far I have declined! It is long since I last dreamed of the Duke of Zhou"[2]. From that line, "dreaming of the Duke of Zhou" became a familiar image, and later writers borrowed his name for a book on dreams.
Two things should be kept apart. That the Duke of Zhou appears in the Confucian classics in connection with dreams is a textual fact. That he wrote a dream book is a later attribution with no historical basis.
How does this book differ from other dream interpretation traditions?
Dream interpretation is found in many cultures. In the Mediterranean world, Artemidorus of Daldis wrote the Oneirocritica (The Interpretation of Dreams) around the 2nd century, classifying dreams and discussing how to read them. That book, too, treats dreams as signs of what is to come.
Chu Công giải mộng differs from the Oneirocritica in having almost no theory. It does not discuss the causes of dreams or separate dreams caused by the body, the mind or outside events; it only gives a conclusion for each image, in the manner of "seeing X corresponds to Y". That is the shape of a folk text, unlike a work with a system of argument.
How should the book be read today?
Read as a cultural document, the book shows how people of the past saw the world: every object in a dream is given a meaning about what lies ahead, mostly about career, wealth, children and health. It is material for understanding folk psychology and how people fold life experience into a system of symbols.
The book is not a historical source: it records no events, has no date and no identified author. Linking a dream omen to a coming event is the interpretive habit of dream reading, not a law of nature, and it has no scientific basis. Dreams are shaped by many things: the day's activities, mood, health, memory.
A suggestion from Nhật Nguyệt: read Chu Công giải mộng as part of folk culture, to see how people of the past encoded symbols and passed them on by word of mouth; an omen the book calls bad is no reason to worry or to decide a real matter.
