The Return of First Yang: The Heart of Heaven and Earth at the Winter Solstice and the Origin of the New Year
This article offers a profoundly detailed interpretation of the Winter Solstice among the Twenty-Four Solar Terms, drawing upon pre-Qin Confucian and Daoist philosophy, etymological analysis, and astronomical calendrics. It reveals the cosmic pivot of 'yin at its extreme giving birth to yang, the return of first yang, and the beholding of heaven and earth's heart,' examines the rites of the Round Mound sacrifice to Heaven, the origin of the calendar epoch at the month of Zi, and the foundational note of the Yellow Bell pitch-pipe, guiding you through the ancient wisdom by which our forebears discerned the generative heart of heaven and earth amid the deepest darkness.
Chapter Eleven: The Rites of Sacrifice to Heaven -- The Round Mound and "The Winter Solstice Is as Great as the New Year"
I. "On the Day of the Winter Solstice, One Summons the Celestial Spirits and the Ghosts of Humankind": The Classical Basis for Winter Solstice Sacrifice to Heaven
The most solemn ritual activity of the Winter Solstice was the sacrifice to Heaven. The Rites of Zhou, in the section on the Grand Music-Master, records this supreme rite: "For all music, huanzhong serves as gong... On the day of the Winter Solstice, this is performed at the round mound upon the earth; when the music changes six times, all celestial spirits descend and may be ritually honored." The Rites of Zhou also states: "On the day of the Winter Solstice, one summons the celestial spirits and the ghosts of humankind."
"The day of the Winter Solstice" -- this is the Winter Solstice. On this day, the former kings performed a grand sacrifice at "the round mound upon the earth," playing specific musical pieces; when "the music changed six times," the celestial spirits descended and could be honored. This is the famous "sacrifice to Heaven at the Round Mound."
Why sacrifice to Heaven at the Winter Solstice$23 This is inseparable from the Winter Solstice's significance as the moment of the return of first yang. The Winter Solstice is when yang returns and the vital force of heaven and earth begins to stir anew -- the starting point of the Way of Heaven's cycle. At this moment closest to "the heart of heaven and earth," the sacrifice expresses the most exalted reverence and gratitude toward Heaven and prays for Heaven's protection.
II. The Round Mound: Why a Circular Altar for Sacrificing to Heaven$24
The "Round Mound" (yuanqiu) is a circular sacrificial altar. Why circular$25 Because "Heaven is round, Earth is square" -- the ancients believed Heaven was round and Earth square. The circular mound symbolizes Heaven; sacrificing to Heaven upon a circular platform matches the form of the sacrifice to its object (Heaven) in symbolic correspondence.
This forms a perfect counterpart to the "Square Mound" (fangqiu) used for the Summer Solstice sacrifice to Earth:
Winter Solstice: sacrifice to Heaven at the Round Mound (circular) -- Heaven is round, so the sacrifice takes place on a round mound; at the Winter Solstice, first yang returns and yang begins to stir, so Heaven, the supremely yang (Qian), is honored at this time.
Summer Solstice: sacrifice to Earth at the Square Mound (square) -- Earth is square, so the sacrifice takes place on a square mound; at the Summer Solstice, first yin begins to stir and yin begins to grow, so Earth, the supremely yin (Kun), is honored at this time.
Winter Solstice for Heaven, Summer Solstice for Earth; round mound paired with square mound; Heaven paired with Earth; yang paired with yin -- this pair of rites forms a perfect symmetry in time (Winter/Summer Solstice), form (circle/square), object (Heaven/Earth), and yin-yang polarity (yang/yin).
III. "When the Music Changes Six Times, the Celestial Spirits Descend"
The Winter Solstice sacrifice at the Round Mound was not merely a ceremony but a solemn musical performance. The Rites of Zhou specifies in great detail that the sacrificial music changes six times, and then the celestial spirits descend.
Why "six changes"$26 "Six" is the completing number of Water, the number of midwinter. The Winter Solstice music changing six times corresponds precisely to the "celestial number" of the Winter Solstice. When the music's number of changes matches the season's celestial number, heaven and humanity resonate, and the celestial spirits descend. Through this design, the sacrificial music becomes an exact resonance with the rhythm of the Way of Heaven.
This reveals the supreme status of "music" (yue) in the ancients' understanding -- music was not mere entertainment but the fundamental medium for communication between heaven and humanity. The Record of Music (Yueji) in the Record of Rites says: "Great music shares its harmony with heaven and earth." The highest music shares the rhythm of heaven and earth's harmony. Because music and heaven and earth share the same rhythm and harmony, when the Winter Solstice music is performed with the correct pitch (huanzhong as gong) and the correct number of changes (six, matching Heaven's number), it achieves exact resonance with the Way of Heaven, and "all celestial spirits descend."
IV. "The Winter Solstice Is as Great as the New Year": From Calendar to Festival
"The Winter Solstice is as great as the New Year" (dongzhi da ru nian) -- this proverb, transmitted through the ages, expresses the exalted status of the Winter Solstice in the traditional festival calendar. Why could the Winter Solstice be "as great as the New Year," or in some senses even more solemn$27
The grounds are multiple. First, from the calendrical perspective, the Winter Solstice was itself the head of the year and the calendar epoch in ancient calendars (the Zhou calendar's establishment of Zi), virtually the beginning of the "year." Second, from the Way of Heaven, the Winter Solstice is the moment of the return of first yang and the beginning of new life, the most worthy of celebration in the renewal of the Way of Heaven. Third, from ritual, the Winter Solstice had the supreme rite of sacrifice to Heaven at the Round Mound, of the utmost solemnity.
By the Han dynasty, the Winter Solstice was established as an important holiday, called "Celebrating Winter" (hedong) or "Winter Festival" (dongjie). On this day, the court held grand celebrations; officials received a holiday; ruler and ministers congratulated each other; the populace observed ancestor-worship and "winter greetings" (baidong -- juniors paying respects to elders).
V. Ancestor Worship and Winter Greetings: The Human Warmth of Honoring the Past
Besides sacrificing to Heaven, the Winter Solstice also involved the worship of ancestors. At the year's end, at the moment of yin's extreme and yang's rebirth, people honored their forebears, expressing remembrance and gratitude for those who came before. This is entirely consistent with the Confucian spirit of "carefully attending to the end and pursuing the distant" (shenzhong zhuiyuan). Master Zeng said: "When the end is carefully attended and the distant pursued, the virtue of the people will return to fullness" (Lunyu, "Xue Er").
Why worship ancestors at the Winter Solstice$28 Because the Winter Solstice stands at the pivot of the year's cycle -- both an ending (the old year drawing to a close) and a beginning (new yang returning). At this moment of ending and beginning, ancestor worship both summarizes the past year and comforts the departed, and seeks ancestral blessings at the start of the new cycle.
And "winter greetings" -- juniors visiting and congratulating elders at the Winter Solstice -- extends this warmth among the living. At the coldest, darkest moment of the year, people greet and warm one another. This warmth is like the thread of returning yang at the Winter Solstice -- amid the deepest cold, conveying the unceasing warmth of life and hope.