Dream Classification in Ancient China

Our ancestors classified dreams into the following fifteen types based on their content:

• Direct Dreams—Dreams that unfold literally: what you see in the dream happens in waking life, or you meet someone you dreamed about. While many dreams are symbolic, some are plain and straightforward—these are direct dreams. For example, if you haven't seen a friend for a while, dream of them at night, and then run into them the next day, that's a direct dream.
• Symbolic Dreams—Dreams in which meaning is conveyed through symbols within the dream. In this tradition, everything we dream about has symbolic layers. For instance, dreaming of ascending to the heavens can symbolize something unattainable; the heavens represent ideals such as masculinity, nobility, and royalty, while the earth symbolizes femininity, motherhood, and nurturing.
• Causal Dreams—Dreams triggered by physical stimuli during sleep. As the saying goes: "When the yin energy is strong, one dreams of great waters; when the yang energy is strong, one dreams of great fires; if one sleeps with a belt, one dreams of snakes; if birds carry hair, one dreams of flying." These are causal dreams.
• Wish Dreams—Dreams shaped by one's desires and inner mental activity. The saying "what one thinks about during the day, one dreams about at night" refers to wish dreams.
• Focused Dreams—Dreams that arise from a concentrated state of mind and focused thought, making them similar to wish dreams.
• Sexual Dreams—Dreams influenced by an individual's attractions and aversions. The emphasis here is less on why the dream occurs and more on the dreamer's attitude toward the dream content.
• Shared Dreams—Dreams in which the same dream carries different meanings for different people.
• Climatic Dreams—Dreams influenced by climate and weather conditions.
• Seasonal Dreams—Dreams shaped by the four seasons. "Spring dreams arise; summer dreams are bright; autumn and winter dreams are mature and hidden"—these are seasonal dreams.
• Contrary Dreams—Dreams that present opposite outcomes; extremes of yin are auspicious, while extremes of yang are inauspicious. In folk dream interpretation, people often believe that what occurs in a dream is the opposite of reality, and historical texts record many such cases. For example, in the idiom "a beautiful dream of Huang Liang," from the Tang writer Shen Jiji's "Record of the Pillow," Lu Sheng enjoys wealth and honor in a dream, only to wake and find the millet still uncooked—left with nothing. This illustrates the significant role of contrary dreams.
• Prophetic Dreams—Also known as dreams of forewarning, these are recorded in many ancient texts. People believed that deities or ancestors communicated auspicious or inauspicious events through such dreams.
• Reciprocal Dreams—Dreams in which one person's good or bad fortune appears in another's dream, or in which two people have the same dream due to mutual influence. Such dreams arise from connections between individuals.
• Fluid Dreams—Dreams with shifting, unpredictable content.
• Illness Dreams—Dreams that portend bodily changes. From a traditional Chinese medicine perspective, they result from imbalances in the body's yin and yang and the five elements.
• Nightmare Dreams—Frightening, disturbing dreams. Nightmares often result from improper sleeping positions or certain health issues.