Chapter Four: The Return of First Yang -- The Fu Hexagram and the Heart of Heaven and Earth (Core Chapter)

I. Why Is "The Return of First Yang" the Soul of the Winter Solstice$46

If the preceding chapters built the astronomical and institutional skeleton for the Winter Solstice, this chapter touches its soul -- "the return of first yang." These four characters are the key to understanding the Winter Solstice and one of the most profound insights of Chinese philosophy. This chapter bears the greatest weight and requires the closest attention.

What is "the return of first yang"$47 Let us begin with the twelve "waxing and waning" hexagrams (shier xiaoxi gua). In the Yijing's system of twelve hexagrams corresponding to the twelve months, the complete cycle of yin and yang's waxing and waning is displayed. The eleventh month (the month of Zi), which contains the Winter Solstice, corresponds to the Fu hexagram (Return; Earth over Thunder, Kun above Zhen below).

What does the Fu hexagram look like$48 Of its six lines, counting from the bottom, the lowest is a yang line (solid), while the five above are all yin lines (broken). That is, beneath five yin lines, a single yang line has quietly appeared. This yang line is "the first yang"; it appears beneath the five yin, at the very bottom of the hexagram, in the deepest and darkest position -- this is "the return of first yang."

Why "return" (fu) rather than "birth" (sheng)$49 The choice of word is exquisitely apt. "Fu" means to come back, to return, to reappear. Yang does not spring into existence from nothing; it "returns" -- it was there all along, only gradually withdrawing and going into latency during the previous half-cycle (from Summer Solstice to Winter Solstice), and at the moment of the Winter Solstice, it returns, resumes its ascent. The word "fu" embodies a profound cosmology: yang never truly vanishes; it merely undergoes a cycle of withdrawal and return. The return of first yang at the Winter Solstice is yang's grand homecoming after half a year of retreat.

II. The Hexagram Structure of Fu: Thunder Stirring Beneath the Earth

Let us look more closely at the structure of the Fu hexagram. Its upper trigram is Kun (Earth), its lower trigram Zhen (Thunder, Movement). Kun is the great earth, supremely yielding and receptive, representing pure yin; Zhen is thunder and movement, with its single yang line at the very bottom, representing the initial stirring of yang. The entire hexagram can be read as: beneath the deep, heavy earth, a spring thunder is quietly beginning to stir -- this is the image of "thunder within the earth."

The Commentary on the Image of the Fu hexagram says: "Thunder within the earth: this is Return. The former kings therefore closed the passes on the day of the solstice; merchants and travelers did not journey; the ruler did not inspect the quarters."

"Thunder within the earth" -- this is the most concise description of the Fu hexagram's image. Thunder (yang, movement) lies hidden in the depths of the earth (Kun, yin), having not yet sounded, not yet broken through the surface, yet already stirring there. What exquisite perception! The first yang of the Winter Solstice is not on the surface but underground; not clamorous but silent; not manifest but latent. It is a heartbeat in the deepest recesses of the earth.

And "the former kings therefore closed the passes on the day of the solstice; merchants and travelers did not journey; the ruler did not inspect the quarters" -- this is a staggering pronouncement. "The day of the solstice" is the Winter Solstice (the day of the shortest day). What did the former kings do on the Winter Solstice$50 "Closed the passes" -- shut the gates of mountain passes and cities; "merchants and travelers did not journey" -- commercial travel ceased; "the ruler did not inspect the quarters" -- the sovereign did not go out to survey the four directions. In a word, on the Winter Solstice, the realm was to fall quiet, all outward and disruptive activity to stop.

Why$51 Because the nascent yang is too tender. The Commentary on the Image uses "closing the passes" as a metaphor, telling us that at the moment of first yang's birth, what matters most is "nurturing" -- surrounding this feeble thread of yang with absolute tranquility, permitting no disturbance whatsoever. This perfectly accords with the Monthly Ordinances' injunction that "the exemplary person fasts, keeps himself concealed... keeps affairs quiet, and waits for yin and yang to settle." The former kings closed the passes; merchants and travelers ceased to travel; the ruler did not go on inspection tours -- the entire realm fell quiet, all for the sake of giving that thread of nascent yang an absolutely tranquil environment in which to gestate. What profound wisdom this is! It tells us: the newly born is most fragile; toward new life, the best attitude is not urging or forcing growth, but guarding, nurturing, and giving it a peaceful space to grow naturally.

III. "In Return, Do We Not Behold the Heart of Heaven and Earth$52": The Deepest Insight of Chinese Metaphysics

Now we come to the core sentence of this chapter, and indeed of the entire essay. The Commentary on the Judgment (Tuan zhuan) of the Fu hexagram says:

"Return brings success. The firm returns. It moves with compliance. Thus going out and coming in are without affliction; friends come without fault. The Way turns and returns; in seven days comes the return -- such is the movement of Heaven. It is beneficial to have a direction to go; the firm is growing. In Return, do we not behold the heart of heaven and earth!"

Let us analyze this passage, one of the most profound texts in the history of Chinese philosophy, sentence by sentence.

"Return brings success" -- the Fu hexagram is blessed with success. Why does the return of first yang bring "success"$53 Because the stirring of vital force, the return of yang, is itself the greatest success in all of heaven and earth.

"The firm returns" -- the firm (yang) has come back. This is another way of saying "the return of first yang."

"It moves with compliance" -- Zhen (movement) is below, Kun (compliance) above; yang stirs yet follows the compliant Way. The newborn yang is not reckless but ascends naturally along the Way of Heaven.

"The Way turns and returns; in seven days comes the return -- such is the movement of Heaven" -- here lies another deeply mysterious teaching. What does "return in seven days" mean$54 One mainstream interpretation: from the Summer Solstice, when the first yin begins (the Gou hexagram), passing through Dun, Pi, Guan, Bo, and Kun, to the Winter Solstice, when the first yang returns (the Fu hexagram), the waxing and waning of yin passes through seven stages (or, counting from the complete stripping away of yang to the return of a single yang, seven hexagram-positions of change). Another interpretation combines numerology -- counting from the Fu hexagram itself, the cycle of yang's retreat and return corresponds to the number "seven." Whichever interpretation is adopted, the core revelation of "return in seven days" is that the return of yang follows a definite, cyclical rhythm of the Way of Heaven -- "such is the movement of Heaven." This cycle is not accidental but the necessity of Heaven's operation. Notably, the aforementioned midwinter's "number six" as Water's completing number, and the Fu hexagram's "return in seven days," with six and seven adjacent -- at the moment of Water's virtue at its extreme (six), the spring of yang's return (seven) is already stirring. The concordance of numerology and hexagram-image here testifies to the subtlety of the ancients' cosmology.

"It is beneficial to have a direction to go; the firm is growing" -- it is auspicious to set forth, for the firm (yang) is growing. After the return of first yang, yang will grow day by day (next comes the Lin hexagram with two yang lines, the Tai hexagram with three...), so this is a time suited for beginning and moving forward.

And the final sentence -- "In Return, do we not behold the heart of heaven and earth!" -- is the soul of the entire passage, one of the pinnacles of Chinese metaphysics.

IV. What Does "The Heart of Heaven and Earth" Truly Mean$55

"In Return, do we not behold the heart of heaven and earth" -- in the Fu hexagram of the return of first yang, we seem to glimpse the very heart of heaven and earth. We must ask this question again and again: does heaven and earth have a "heart"$56 If so, what is this "heart"$57 And why is it precisely at the moment of "Return" (the return of first yang at the Winter Solstice) that this heart is most clearly revealed$58

First, the "heart" (xin) of heaven and earth does not mean that heaven and earth possess a personified consciousness or emotions. "Heart" here refers to the fundamental intentionality, core essence, and inner motive force of heaven and earth's operations. The ancients asked: behind the teeming changes of all things, is there a single most fundamental "intentionality"$59 What does heaven and earth "want"$60 What is the nature of heaven and earth$61

The answer lies hidden in "Return." In the annual cycle of yin and yang, from the Summer Solstice to the Winter Solstice, yang retreats steadily while yin grows, until at the Winter Solstice, yin is at its peak, all things have withered, heaven and earth are bleak with killing cold -- if you saw only this, you might conclude that the heart of heaven and earth is "killing," "destruction," a march toward death and nothingness. But precisely at this darkest, coldest, most yin extreme, a slender thread of yang quietly returns! Heaven and earth have not marched toward utter death; on the contrary, at the darkest moment, they have renewed the nurturing of light; at the coldest moment, they have renewed the stirring of life.

This is "the heart of heaven and earth" -- the heart of heaven and earth is "ceaseless generation" (shengsheng), creation, the irrepressible will to life that still nurtures new being amid any darkness or death.

The Great Commentary of the Yijing says: "The great virtue of heaven and earth is called 'generation.'" The greatest virtue of heaven and earth is "generation" -- to give birth, to create, to let life ceaselessly spring forth. And when is this "virtue of ceaseless generation" most clearly revealed$62 Not in summer when all things flourish (when vital force is too conspicuous, its source is harder to discern), but precisely at the Winter Solstice when all things have withered -- when every outward splendor has been stripped away, when heaven and earth have been pared down to nothing but a field of yin cold, at this most simple, most bare, most dark extreme, that slender thread of returning yang nakedly, without any concealment, reveals the deepest heart of heaven and earth: it simply must "generate," no matter what, it must "generate."

What a profound, what a moving insight! Chinese philosophy reaches one of its summits here. It tells us: the fundamental nature of the cosmos is not cold, mechanical, or tending toward heat-death, but warm, creative, and ceaselessly generative. Even at the most desperate moment of deepest darkness, the power of new life has never been absent. That thread of yang stirring beneath the five yin is the letter of hope that the cosmos has written to all life.

V. Cheng Hao and the Discipline of "Observing Return"

Later Confucian scholars had a profound experiential understanding of "beholding the heart of heaven and earth in Return." The Northern Song scholar Cheng Hao (Master Mingdao) offered a widely transmitted reflection: the heart of heaven and earth is visible in "Return" precisely because of that single point of "vital impulse" (shengyi) -- heaven and earth's intention to bring forth life is most evident at the moment when everything has been stripped bare and first yang returns. This understanding fused the metaphysical insight of the Yijing with the Confucian experience of life.

Why is "vital impulse" most evident at the moment of "Return"$63 Consider an analogy: when a great tree is lush with branches and leaves, it is hard to see precisely where its life-force resides -- life is everywhere, making its source invisible. But when the cold of winter arrives, leaves fall and branches stand bare; the entire tree seems dead. Yet in the depths of those seemingly dead branches, in the root system buried beneath the frozen earth, a life-force is quietly nurturing, gathering, and waiting. The return of first yang at the Winter Solstice is the very moment when this deeply hidden life-force begins to stir. Against the background of all things stripped to their barest, that single point of vital impulse appears all the more vivid, all the more precious, all the more moving.

This is the discipline of "observing Return" -- contemplating that first thread of nascent yang in the deepest darkness, apprehending the inextinguishable vital force amid apparent death. The Most High (Laozi) said, "The myriad things flourish together; I observe thereby their return" (Daodejing, Chapter 16) -- this is the Daoist "observation of Return." The Confucian "observation of Return" is to apprehend, at the point of first yang's return in the Fu hexagram, the generative heart of heaven and earth, and from there to turn inward and nurture within one's own heart that irrepressible sprout of vital impulse and humaneness (ren). Though the two traditions differ in approach, both point to the same deepest realm -- union with the ceaseless generative virtue of heaven and earth.

VI. Hope in the Darkest Hour: The Ultimate Consolation of Winter Solstice Philosophy

The insight of "beholding the heart of heaven and earth in Return" has endowed Chinese culture with a deep and tenacious optimism. This is not a shallow or blind optimism, but a profound faith that has pierced through the deepest darkness to reach the very heart of the cosmos.

It tells every person who stands in difficulty, in darkness, in despair: remember the Winter Solstice. Remember that on the darkest day of the year, a slender thread of yang has already quietly returned. When darkness reaches its extreme, light begins; when cold reaches its extreme, warmth stirs; when despair reaches its extreme, hope descends. This is not wishful consolation but the fundamental law of heaven and earth's operation -- reversal at the extreme, return after stripping, arrival of prosperity after adversity.

In the Counting Nines' cold days, the coldest period begins from the Winter Solstice and stretches eighty-one days before true spring warmth arrives. But note: though after the Winter Solstice there are still the bitterest cold "third nine" and "fourth nine," that thread of nascent yang has already returned on the day of the Winter Solstice. The coldest days have not yet passed, but the force of new life has already begun -- this is the most profound, most moving dialectic of the Winter Solstice. It teaches us, in the most difficult moments, still to cherish hope; in the depths of the deepest cold, still to believe that warmth will surely come. For the heart of heaven and earth is "ceaseless generation," and the force of ceaseless generation never ceases.