Chapter Seventeen: A Philosophical Chapter on "Why" -- Why Venerate "the Center" and "Harmony"$2

I. The Ultimate Question: Why Is Balance Precious$3

After seventeen chapters of exploration from multiple dimensions, it is time to ask the most fundamental question: why are zhong and he so precious$4 Why did the ancients celebrate the Spring Equinox's "equal days and nights, balanced cold and heat" as a manifestation of the Way of Heaven's highest character$5 Why did "balance" become one of Chinese civilization's most cherished values$6

The first-level answer: because extremes bring disaster. Whenever any force deviates from its proper measure, it tends toward its opposite and invites calamity. Only zhong (neither excess nor deficiency) and he (yin-yang harmony) allow all things to thrive under optimal conditions. At this most basic level, venerating zhong and he is a survival wisdom the ancients distilled from long coexistence with nature.

II. The Second Level: Harmony Generates, Equilibrium Endures

But the significance of "venerating zhong and he" extends far beyond "avoiding harm." It has a more positive, more profound meaning: harmony generates all things; equilibrium endures.

The Discourses of the States (Guoyu), "Discourses of Zheng," records a supremely profound statement by the historian Shi Bo: "Indeed, harmony generates all things; sameness cannot sustain. To balance one thing with another that is different is called 'harmony,' and therefore it can grow abundantly and all things are drawn to it. If one supplements the same with the same, everything is exhausted and cast away."

Shi Bo's words are the foundational statement of Chinese "harmony" philosophy. "Harmony" is not "sameness" (monotonous uniformity) but "balancing different things with different things." Precisely because different things (like yin and yang) are harmonized, new life can be generated; if only the same is piled upon the same, there is no vitality and ultimate exhaustion follows. The Spring Equinox's "yin and yang in equal halves" is the paradigm of "balancing different things with different things" -- yin and yang, two forces that are different and opposite, are perfectly balanced, and therefore they interact fully and generate all things in union.

III. The Third Level: Central Harmony as the Rectitude of Nature and Destiny, the Root of Heaven and Earth

The deepest significance of "venerating zhong and he" ascends to the level of "the rectitude of nature and destiny" and "the root of Heaven and Earth."

The Doctrine of the Mean says: "Zhong is the great root of all under Heaven; he is the universal Way of all under Heaven. When zhong and he are brought to their utmost, Heaven and Earth take their proper positions and all things are nourished." Here, zhong is elevated to "the great root of all under Heaven" and he to "the universal Way." Zhonghe is not merely a state or method but the source and destination of all things. Without zhonghe, Heaven and Earth would collapse, all things would perish.

The Qian hexagram's "preserving and uniting the Great Harmony, thus it is fitting and upright" expresses the same insight. Only by maintaining the "Great Harmony" can all things "each receive their correct nature and destiny." "Harmony" therefore concerns the "rectitude of nature and destiny" of every living thing. The Spring Equinox's "yin and yang in equal halves, blending in Great Harmony" is precisely the moment when Heaven and Earth "preserve and unite the Great Harmony" and all things "each receive their correct nature and destiny."

IV. The Fourth Level: From the Central Harmony of the Way of Heaven to the Central Harmony of the Way of Humanity

Finally, let us extend "venerating zhong and he" from the Way of Heaven to the Way of Humanity, completing the final circuit of this philosophical inquiry.

The Way of Heaven venerates zhonghe (equal days and nights at the Spring Equinox, yin-yang harmony); the Way of Humanity should likewise venerate zhonghe. This is the shared core concern of both the Confucian and Daoist traditions. The Confucians teach "attaining central harmony" (Doctrine of the Mean), "faithfully holding fast to the center" (Analects, "Yao yue"), "excess is as bad as deficiency" (Analects, "Xianjin"). The Daoists teach "guarding the center" (Daodejing), "blending qi into harmony," "knowing harmony is called constancy." Both traditions, arriving by different roads at the same destination, enshrine zhonghe as the highest standard of the Way of Humanity.

This is why, throughout our discussion, the ancients' calibration of weights and measures at the Spring Equinox (human fairness emulating heavenly equilibrium), their health cultivation of "taking balance as the standard" (bodily harmony emulating cosmic equilibrium), and their Gaomei fertility prayer following Heaven's timing (human reproduction emulating Heaven and Earth's generation) -- all these practices of the Way of Humanity take as their foundation the emulation of the "central harmony of the Way of Heaven" manifested at the Spring Equinox. The Spring Equinox is thus not merely an astronomical node but a monument to zhonghe that Heaven has erected for humanity -- displaying, in the most intuitive way possible (equal days and nights, balanced cold and heat), the fundamental Way that sustains the cosmos and fulfills all life: zhong and he.