Chapter Five: The Twelve Waxing and Waning Hexagrams -- The Annual Ring of Yin and Yang

I. What Are the Twelve Waxing and Waning Hexagrams$64

To fully understand the position of the Winter Solstice's Fu hexagram within the cosmic cycle, one must grasp the entire system of the twelve waxing and waning hexagrams (shier xiaoxi gua). The two characters "xiaoxi" mean: "xiao" is the waning of yang as yin grows; "xi" is the growth of yang as yin wanes ("xi" carries the sense of increase and flourishing). The twelve waxing and waning hexagrams use twelve hexagram-images to represent the complete process of yin and yang alternately waxing and waning throughout the year.

Let us unfold this cycle in full (following the waxing and waning of yang):

Eleventh month, Fu (Return) -- the return of first yang. The month of the Winter Solstice; one yang line is born beneath five yin. This is the starting point of yang's return, the true beginning of the entire cycle.

Twelfth month, Lin (Approach) -- two yang lines grow. Yang continues to increase.

First month, Tai (Peace) -- three yang lines open prosperity. Three yang below, three yin above; yin and yang in harmonious exchange, heaven and earth in communication -- this is the auspicious meaning of "three yang open prosperity" (sanyang kaitai).

Second month, Dazhuang (Great Strength) -- four yang lines, yang in vigorous strength.

Third month, Guai (Breakthrough) -- five yang lines resolve the last yin. Only one yin line remains above; yang is about to sweep away the final yin.

Fourth month, Qian (The Creative) -- six yang lines, pure yang. All six lines are yang; yang has reached its ultimate. This is the approach of summer.

Fifth month, Gou (Encounter) -- the first yin begins to stir. The month of the Summer Solstice; one yin line is born beneath five yang. Yang is at its extreme and yin is born; the cycle begins to descend.

Sixth month, Dun (Retreat) -- two yin lines grow. Yang begins to withdraw.

Seventh month, Pi (Standstill) -- three yin, three yang. Three yin below, three yang above; heaven and earth do not communicate -- this is "Pi" (the opposite of "Tai").

Eighth month, Guan (Contemplation) -- four yin lines in abundance.

Ninth month, Bo (Splitting Apart) -- five yin lines strip away yang. Only one yang line remains above; yang is about to be completely stripped away.

Tenth month, Kun (The Receptive) -- six yin lines, pure yin. All six lines are yin; yin has reached its ultimate. Winter approaches; the Winter Solstice is imminent.

After Kun comes Fu once more -- the return of first yang. The cycle begins anew.

II. The Pivotal Position of the Winter Solstice's Fu Hexagram in the Cycle

Within this grand cycle of twelve hexagrams, the Winter Solstice's Fu hexagram occupies the most critical pivotal position. Why$65

Because Fu is the cycle's "turning point" and "starting point." From Kun (tenth month, pure yin) to Fu (eleventh month, the return of first yang) is the moment in the entire year when the balance of yin and yang undergoes its fundamental reversal. Before this, yang steadily retreated (from Qian's six yang lines, through Gou, Dun, Pi, Guan, Bo, to Kun's six yin); after this, yang steadily grows (from Fu's one yang, through Lin, Tai, Dazhuang, Guai, to Qian's six yang). Fu is the great inflection point where retreat turns to advance, waning turns to waxing, yin turns to yang.

Note the relationship between Fu and Kun. Kun's six lines are all yin -- pure yin at its extreme. If one followed the linear logic that "yin will continue to increase," after Kun there should be yet more yin -- but the opposite is precisely the case: after Kun (yin at its extreme) comes Fu (the return of first yang). This is the most intuitive embodiment of "yang born from yin's extreme," of "reversal at the limit." The extreme of pure yin is not a dead end, but the gate of new life.

III. Macrocosm and Microcosm: The Year's Zi Month and the Day's Zi Hour

The "return of first yang" of the Winter Solstice's Fu hexagram is not merely a law governing the year, but a universal principle pervading "large and small" scales of time alike. This profoundly manifests the Chinese philosophical cosmology of "structural identity between macrocosm and microcosm, a single principle uniting heaven and humankind."

Within a single day, there is also a "Fu hexagram moment" -- the "zi hour" (midnight, 11 PM to 1 AM). The zi hour is the darkest, most yin-laden moment of the day, yet precisely at this darkest midnight, the first yang begins to stir (the so-called "at midnight's zi hour, first yang is born"). This follows exactly the same law as the year's Winter Solstice (zi month), when first yang returns -- both are "yin at its extreme (midnight/deep winter) giving birth to yang."

Observe this marvelous correspondence: on the annual scale, the Winter Solstice (zi month) is the time of first yang's return; on the daily scale, the zi hour (midnight) is the time of first yang's return. The Earthly Branch "zi" governs the beginning of both -- zi month governs the beginning of the year, zi hour the beginning of the day. Each year has its Fu hexagram (Winter Solstice); each day has its Fu hexagram (zi hour). The great cycle (year) and the small cycle (day) share the same fundamental structure of "yang born from yin's extreme, the return of first yang."

This concept of "macrocosm and microcosm in correspondence" extends the meaning of the Winter Solstice from the annual to all temporal scales. It tells us: "the return of first yang" is not an isolated, once-a-year special event, but a universal law of the Way of Heaven that plays out repeatedly at the darkest extreme of every temporal cycle (whether a day, a year, or a larger span). Every midnight holds a return of nascent yang; every Winter Solstice holds a return of nascent yang. The heart of heaven and earth, ceaselessly generative, eternally pulses in these returns, great and small, without end. Understanding this, we can apprehend the heavenly secret of "the return of first yang" in every ordinary midnight, every ordinary dawn -- new life need not await the annual Winter Solstice; it is quietly occurring at every extreme of darkness. What profound yet intimate wisdom!

IV. The Cosmology Behind the Waxing and Waning Hexagrams: Cycle, Not Straight Line

What the twelve waxing and waning hexagrams reveal is a cyclical, not linear, cosmology. In the ancients' view, time is not an irreversible straight line but an endlessly revolving circle. Yin and yang eternally alternate in waxing and waning upon this circle, without absolute beginning or absolute end.

The Most High (Laozi) said: "The great is called the departing; the departing is called the distant; the distant is called the returning" (Daodejing, Chapter 25). Greatness leads to departure; departure leads to distance; distance leads to return. This cycle of "departure -- distance -- return" is the philosophical portrait of the twelve waxing and waning hexagrams. Yang stirs from Fu (beginning), reaches its peak in Qian (greatness), then wanes (departing, distancing), reaches its nadir in Kun, and returns from Fu once more (returning) -- revolving ceaselessly, generating without end.

This cyclical cosmology endows Chinese culture with a distinctive sense of time and view of life. It prevents despair in the face of endings (for every ending is a new beginning) and prevents arrogance in the face of zenith (for every zenith is the start of decline). The Winter Solstice's Fu hexagram is the most profound, most moving embodiment of this cyclical cosmology -- it tells us that after the deepest darkness, dawn must come; within death, new life is nurtured; the cycle never ceases; hope endures forever.