The Metaphysical Foundations of Pre-Qin Qi Theory: Physical Reduction and Cognitive Paradigm Reconstruction

Section 1: Wind, Clouds, and Breath – The Primitive Experiential Field of "Qi"

To understand the original nature of any concept, one must inquire into its origins. Historically, the character "qi" has been explained as either "cloud and vapor" (云气) or "fodder for guests" (馈客刍米). Regardless of the interpretation, it points to something perceptible and fluid—either the ever-changing clouds and mists in the sky or the rising steam from cooking rice.

This point is crucial. From its inception, "qi" was not a purely speculative product but a naming of bodily experiences and natural observations.

The Pre-Qin people lived in a world deeply connected to nature. They breathed daily, feeling the air enter and exit their chests; they observed celestial phenomena, seeing clouds gather and disperse, winds rise and storms brew; they lit fires for cooking, seeing water boil and steam rise, and firewood burn to ash; they cultivated fields, feeling the alternation of the four seasons. These experiences formed the raw material for the concept of "qi."

Master Zhuangzi, in his Discourse on the Equality of Things (齐物论), offers a brilliant description:

"The Great Expanse exhales and its name is Wind. It is only when it is not acting that it is so. When it acts, the myriad openings roar. And do you not hear it whistling$7 The crevices of mountains and forests, the hollows of great trees a hundred spans around, are like noses, like mouths, like ears, like cleavages, like holes, like depressions, like basins, like pools. They whistle, they shriek, they bluster, they sigh, they cry, they wail, they moan, they howl. The former sings out, and the latter answers with a hum. When the wind is gentle, the harmony is slight; when the wind is strong, the harmony is great; when the fierce wind passes, the myriad openings become empty."

This passage is often read as literature, but its physical insights are not to be overlooked. Master Zhuangzi says, "The Great Expanse exhales and its name is Wind"—the earth exhales a breath, and this is wind. The wind passes through various-sized openings in the mountains and forests, producing different sounds; the strength of the wind determines the volume of the sound—"When the wind is gentle, the harmony is slight; when the wind is strong, the harmony is great."

Is this not a simple acoustic observation$8 Sound is the result of the vibration of gases, the shape of the openings determines the nature of the sound, and the strength of the wind determines its volume. Master Zhuangzi uses "qi" to unify the explanation of the cause of wind and the production of sound, the underlying mode of thinking is entirely physical: starting from observable phenomena to find a unified principle of explanation.