Dream Categories in Chinese Tradition: Six Names, and Who Defined Them

Chinese tradition has exactly one list of dream types that comes down from the classical period, and it is not a theory of dreaming. It is a paragraph in the 周禮, the ritual manual, describing what a minor official is employed to do. 占夢：掌其歲時，觀天地之會，辨陰陽之氣。以日月星辰占六夢之吉凶 — the officer of dreams keeps the calendar, watches where heaven and earth meet, distinguishes the qi of yin and yang, and judges the fortune of six kinds of dream by the sun, the moon and the stars.

Read the whole paragraph and the job turns out to be astronomical and ceremonial rather than personal. 季冬，聘王夢，獻吉夢於王，王拜而受之。乃舍萌於四方，以贈惡夢，遂令始難驅疫 — in the last month of winter the officer collects the king's dreams, presents the auspicious ones to him, receives his bow, scatters new sprouts to the four directions to send the bad dreams away, and then orders the seasonal rite that expels pestilence. The output is a state ritual. Nothing in the paragraph addresses a private dreamer, and nothing in it maps an image to a meaning.

The six names are 正夢, 噩夢, 思夢, 寤夢, 喜夢 and 懼夢, and the manual gives no definitions for any of them. The glosses that fill them in — a dream that arrives with no outside cause, a dream that startles, a dream of what occupied the waking mind, a dream of what was done while awake, a dream of joy, a dream of fear — come from 鄭玄's commentary and the later sub-commentary, written centuries after the manual was compiled. That delay matters when the list is quoted as though it were a self-explaining classification. What survives from the classical period is six labels and a set of duties; the meanings attached to the labels are commentary, and commentary is interpretation.

A few pages earlier, the 周禮 gives the 大卜, the chief diviner, a different dream list. 掌三夢之法，一曰致夢，二曰觭夢，三曰咸陟。其經運十，其別九十 — three methods of dream, with ten main headings and ninety subdivisions. Three items, ten headings, ninety branches. The 占夢 list has six items and no subdivisions at all.

The two lists share no item and the manual states no relation between them. Later commentators had to reconcile them, and the reconstruction tradition summed up in the 周禮正義 treats the three as the established procedure of verification and the six as the shapes dreams take. That is a reasonable harmonisation, and it is also an admission: the ritual corpus contains two incompatible dream taxonomies, compiled for two different offices, and neither was built to classify a private sleeper's night.

There is a second classical taxonomy that does more work, and it is not a list of dream types at all. It is the division inside 淫邪發夢, chapter 43 of the 靈樞, between the twelve excesses, each marked by 盛, and the fifteen deficiencies, each marked by 客. Every row in that chapter names a dream scene, states which pattern it belongs to, and ends in an instruction — 寫之, drain, or 補之, supplement. A category that cannot change what you do next is decoration. This one changes the treatment, and the treatment inverts when the category flips. It is the only classical dream classification in the corpus whose output is an action rather than a label.

The six-part list that circulates in popular writing — physical dreams, dreams of daily reflection, symbolic dreams, visitation dreams, prophetic dreams, seasonal dreams — is a modern composite rather than a classical scheme, and its parts have very different provenances. Two of them are the 周禮's own names, 思夢 and 寤夢. One is a real classical observation without a name: 甚饑則夢取，甚飽則夢予, in the 靈樞 chapter, says that hunger makes you dream of taking and satiety of giving, which is the whole content of the physical category in one line. One, the seasonal category, belongs to the calendar half of the 占夢 job, 掌其歲時. The remaining two have no classical home of that shape at all. The 周禮 does handle fortune-telling about dreams, but it routes them to the king and to the seasonal expulsion rite, not to a private symbol reading.

Sorting dreams into types is only worth the time if the sort changes something. The 靈樞 division passes the test because it inverts the treatment. The 周禮 six names pass it weakly: two of them are prompts to name what occupied the day, two are prompts to record an emotional tone, and one is a reminder that a frightened waking is an observation worth writing down. The popular six-part list fails it more often, because a dream filed as symbolic has no next step attached. A better habit is to sort by response rather than by type: write it down because it was vivid, check the room and the evening because it frightened you, mention it to a clinician because it keeps returning or because you act it out, and let the rest go. That sorting needs no classical authority and it survives contact with both texts.