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

Chapter 3: "A Complete Understanding of the World is but Qi" – The Physical Underpinnings of Daoist Theories of Qi

Section 1: Master Laozi: The Cosmology of "Interacting Qi Harmonizes Them" (冲气以为和)

Daoism is a core developer of Pre-Qin theories of qi. Master Laozi's Daodejing provides a cosmological framework for qi.

Daodejing, Chapter 42:

"The Dao gives birth to One; One gives birth to Two; Two gives birth to Three; Three gives birth to the myriad things. The myriad things carry Yin and embrace Yang; the interacting qi harmonizes them."

This passage is one of the most famous cosmological outlines in Chinese philosophy. Let us inquire into each phrase.

"The Dao gives birth to One" – What is "One"$11 Commentators throughout history have offered various interpretations, but if placed within the context of Pre-Qin theories of qi, the most reasonable understanding of "One" is "primordial qi" (元气)—the unified, undifferentiated original qi of the universe. This "One" is not the number "1" in a mathematical sense but signifies "wholeness and unity": the unified state before the differentiation of all things.

"One gives birth to Two" – What is "Two"$12 Yin and Yang. The unified primordial qi differentiates into two opposing yet complementary forces or tendencies.

"Two gives birth to Three" – What is "Three"$13 The key here lies in "the interacting qi harmonizes them" (冲气以为和). "Chong" (冲) means vigorous interaction. Yin and Yang interact and stimulate each other, producing a third state—"He" (和), harmony. "Three" is the qi of harmony produced by the interaction of Yin and Yang.

"Three gives birth to the myriad things" – Under the joint action of Yin, Yang, and the qi of harmony, all things are generated.

"The myriad things carry Yin and embrace Yang; the interacting qi harmonizes them"—the state of existence of all things is to carry Yin, embrace Yang, and maintain their own harmonious unity through the vigorous interaction of qi.

What are the physical implications of this cosmological model$14

It describes an evolutionary process from a unified state to a differentiated state and then to a complex state. The original unified "qi" (One) differentiates into two basic opposing forces (Two). The interaction of these two forces produces a new dynamic balance (Three), from which the diversity of all things emerges (myriad things).

If we temporarily set aside specific material carriers and focus solely on this mode of thinking—from uniformity to symmetry breaking, from symmetry breaking to interaction, from interaction to the emergence of complex systems—it shares a profound structural isomorphism with the basic logic of the universe's evolution after the Big Bang as described by modern cosmology.

Of course, we are not suggesting that Master Laozi "predicted" modern physics. What we are saying is: Master Laozi's theory of qi has a physical mode of thinking—it focuses on the process of generation from simplicity to complexity, from unity to multiplicity, and "qi" is the unified medium and driving force of this process.

Even more worthy of reflection is the word "He" (和) in "interacting qi harmonizes them." "He" is not static balance but dynamic coordination—Yin and Yang constantly interact and clash, maintaining a flowing stability amidst conflict. This is precisely the simple expression of "dynamic equilibrium" or "dissipative structure" in modern physics.

Section 2: Master Zhuangzi: The Unifying Field of "A Complete Understanding of the World is but Qi"

If Master Laozi provided a cosmological framework for theories of qi, then Master Zhuangzi pushed them towards a deeper unity—not just the unity of cosmic generation, but unity in an ontological sense.

In Zhuangzi's "A Complete Understanding of the World" (知北游), there is a passage that can be considered the highest programmatic statement of Pre- Qin theories of qi:

"The birth of man is the aggregation of qi; aggregation becomes life, dispersion becomes death. If death and life were strangers, what would I have to worry about! Therefore, the myriad things are one. That which people consider marvelous they call spirits and marvels; that which they consider foul they call stench and rottenness. Stench and rottenness are reborn as spirits and marvels; spirits and marvels are reborn as stench and rottenness. Therefore it is said: 'A complete understanding of the world is but qi.' The sage therefore esteems unity."

Every sentence in this passage is worthy of repeated contemplation.

"The birth of man is the aggregation of qi; aggregation becomes life, dispersion becomes death."

What is life$15 It is the aggregation of qi. What is death$16 It is the dispersion of qi. This is not a poetic metaphor but a serious ontological proposition: the essence of life does not lie in some mysterious soul or independent spiritual entity, but in a specific mode of aggregation of matter-energy. When this mode of aggregation is maintained, it is "life"; when this mode of aggregation disintegrates, it is "death."

There is a key physical insight here that is often overlooked: Master Zhuangzi did not say "qi aggregates to become life, qi extinguishes to become death," but rather "qi aggregates to become life, qi disperses to become death." "Disperse" is not "extinguish." After life perishes, the qi does not vanish but merely disperses, returning to the great qi that pervades heaven and earth. What does this mean$17 It means that matter-energy neither arises from nothing nor perishes into nothing; it merely transforms between aggregation and dispersion.

Is this not precisely the Pre-Qin expression of the conservation of matter and conservation of energy$18

"That which people consider marvelous they call spirits and marvels; that which they consider foul they call stench and rottenness. Stench and rottenness are reborn as spirits and marvels; spirits and marvels are reborn as stench and rottenness."

People consider beautiful things "marvels" and ugly things "stench and rottenness." But foul things can be reborn as marvelous things, and marvelous things will eventually be reborn as foul things.

This is not a lament of nihilism but a profound recognition of the natural law of material circulation and transformation. Flowers bloom as "marvels," wither and rot as "stench and rottenness"; but rotten flowers and leaves turn into soil nutrients, nourishing new life to bloom again—"stench and rottenness are reborn as spirits and marvels." This is a complete closed loop of material circulation in nature.

"Therefore it is said: 'A complete understanding of the world is but qi.'"

Therefore, what permeates the entire world is but qi.

The power of this statement lies in the character "yi" (一, one). "One qi" means: the foundation of all things is the same; there is no ontological断裂 (discontinuity) between life and death, beauty and ugliness, marvels and stench and rottenness; they are merely transformations of the same fundamental substance between different states.

This is the Pre-Qin "unified field theory." Contemporary physics attempts to explain the four fundamental forces with a unified theory; the Pre-Qin people, with the single concept of "qi," unified matter (the substance of qi), energy (the flow and transformation of qi), and information (the resonance and transmission of qi). Although the scale and precision are incomparable, the theoretical impulse to seek a unified explanation is entirely consistent.

Section 3: Qi Transformation and Flow – A Worldview of Process Philosophy

Master Zhuangzi's theory of qi also has an extremely important aspect that is often overlooked: it understands the world as a constantly flowing process, rather than a collection of static entities.

In Zhuangzi's "Autumn Floods" (秋水), the North Sea Sage says:

"Things have measure without limit, time without cessation, divisions without fixedness, ends and beginnings without fixed cause."

The measure of things is infinite, time never stops, the divisions of things are not fixed, and there is no fixed cause between ends and beginnings. This is a complete process cosmology: there are no eternally unchanging entities, only constantly flowing processes.

Zhuangzi's "The Great and Venerable Teacher" (大宗师) further elaborates:

"He is there, together with the Creator, wandering in the one qi of Heaven and Earth."

The true person is one who is friends with the Creator, wandering in the one qi of Heaven and Earth. The word "wandering" (游) here is deeply meaningful—it implies not "settling" in a fixed state of existence, but "wandering" within the flow of qi.

In Zhuangzi's "The Joy of Life" (至乐), there is a striking passage about the origin of life:

"Intermingled between the faint and the obscure, it transforms and there is qi; qi transforms and there are forms; forms transform and there is life. Now, again..."