The Mystic Pivot of Earthly Order: A Study on the Ancient Origins of the Six Combinations and Qi Transformations of the Twelve Earthly Branches
This article offers an in-depth investigation into the pre-Qin, high-antiquity origins and inner rationale of the Six Combinations and their Qi transformations among the Twelve Earthly Branches (e.g., Zi-Chou combining to transform into Earth). Through textual examination of the Earthly Branches' origins, their connection with Jupiter's orbital cycle, the correspondences between the twelve months and the twelve sovereign hexagrams, and the spatial positioning of the four Earth-branches at the four inter-cardinal directions, the essay reveals the profound astronomical and yin-yang philosophical underpinnings of the Earthly Branch system as a cornerstone of Chinese metaphysical arts.
Chapter Eleven: Practical Applications and Historical Cases of Six Combination Qi Transformation
Section 1: The Timing Practices of Ancient Rulers
The ancient rulers placed the highest importance on proper timing in their governance. The Shangshu, "Canon of Yao," recording Emperor Yao's appointment of four officials to oversee the four seasons, is clear evidence.
The ruler's choice of timing for state actions was inseparable from the principles of Six Combination Qi Transformation. For example:
Performing the Grand Sacrifice to Heaven at the winter solstice (Zi-month) -- The Zi-month sees the return of one yang, the beginning of Heaven and Earth's harmonious union. The ruler's sacrifice to Heaven at this time takes the meaning of Zi-Chou combining to transform into Earth -- Earth receiving Heaven's virtue, the sovereign shepherding the people on behalf of Heaven.
The Liji, "Monthly Ordinances," records the ordinances for the late winter (Chou-month):
"In this month, command the appropriate officials to perform the great exorcism. Everywhere perform sacrificial slaughter. Bring forth the Earth Ox to send away the cold qi."
"Bringing forth the Earth Ox" -- fashioning an ox from clay and placing it outside the city gate to drive away cold and welcome spring. This custom of the "Earth Ox" implicitly accords with Zi-Chou combining to transform into Earth -- using the qi of Earth to banish winter's cold and welcome the new spring.
Performing rites and music at the vernal equinox (Mao-month) -- The Mao-month's combination with Xu transforms into Fire; Fire represents ritual propriety and civilization. Performing ritual music education at the vernal equinox accords with the meaning of Mao-Xu transforming into Fire.
The Liji, "Monthly Ordinances," records for mid-spring:
"In this month, day and night are equal... Command the Director of Music to rehearse the dances and present vegetable offerings."
"Command the Director of Music to rehearse the dances" -- at the vernal equinox, musical dances are practiced; this marks the beginning of ritual education. Mao-Xu combine to transform into Fire; Fire governs ritual. Performing ritual and musical activities at the equinox is thus most fitting.
Section 2: The Timing of Warfare in the Spring and Autumn Period
During the Spring and Autumn and Warring States periods, feudal lords frequently chose auspicious times for military campaigns. Though it cannot be confirmed that the ancients directly applied Six Combination Qi Transformation to choose times for battle, certain implicit correspondences appear in the historical record.
The Zuozhuan, twenty-second year of Duke Xi, records the Battle of Hong between Song and Chu:
"In winter, the eleventh month, on the day Jisi, at new moon, the Duke of Song engaged the Chu people at Hong."
This battle occurred in the Zi-month (eleventh month). Zi-Chou combine to transform into Earth; the Zi-month is when Water is dominant. Yet the battle fell on the day "Jisi" -- Ji is yin Earth and Si is yin Fire; Earth and Fire in a Water-dominant month are weak in force. Duke Xiang of Song engaged in battle on this day, and moreover stubbornly adhered to "benevolence and righteousness" by refusing to attack the enemy while crossing the river, ultimately suffering a great defeat.
From the perspective of Six Combination Qi Transformation: in the Zi-month, the qi should combine with the Chou-month to transform into Earth. Yet Duke Xiang of Song fought alone in the Zi-month, not waiting for the Chou-month's "combined force" -- as if a yang Branch lacked its yin Branch counterpart, having the name of combination without its substance. Hence his defeat may have had the additional factor of unfavorable celestial timing.
Section 3: Agriculture and Six Combination Qi Transformation
The ancients took agriculture as the foundation of livelihood, and the timing of agricultural activities was of the utmost importance. The principles of Six Combination Qi Transformation had direct applications in agriculture.
I. Zi-Chou transforming into Earth and winter farming
The Zi-month's winter solstice and the Chou-month's Great Cold mark the year's coldest period. Yet farmers are not idle at this time -- winter is precisely when they repair tools, compost, and prepare fields.
The Lushi Chunqiu, "Chapter on Entrusting to the Land" (Rendi Pian):
"In superior fields, leave the ridges fallow; in inferior fields, leave the furrows fallow."
In winter, fields are plowed and turned to loosen the soil and freeze-kill pests. Zi-Chou combining to transform into Earth -- winter's water-qi (Zi) combines with the ground (Chou) to produce fertile soil. Ice and snow cover the earth, and when they melt in the coming spring, the soil becomes even more loose and fertile. This is the concrete natural manifestation of Zi-Chou transforming into Earth.
II. Yin-Hai transforming into Wood and planting
In the Yin-month at the Beginning of Spring, all things sprout. Yet seeds must be prepared during the Hai-month (tenth month) or earlier. Seeds harvested in the Hai-month, nurtured through winter's storing, are sown in the Yin-month and sprout.
The Guanzi, "Chapter on Measuring the Land" (Dudi Pian):
"During the three months of autumn... during the three months of winter... store seeds according to the season."
Seeds stored in the Hai-month, sown in the Yin-month -- this is the agricultural manifestation of Yin-Hai combining to transform into Wood. Seeds (nurtured within Hai's Water) enter the soil (through the winter storing of Zi-Chou), and by the Yin-month they sprout (transforming into Wood) -- Water transforming into Wood, a process most directly visible in agricultural practice.
III-VI. Mao-Xu transforming into Fire and the agricultural busy season; Chen-You transforming into Metal and the harvest; Si-Shen transforming into Water and irrigation; Wu-Wei transforming into Sun and Moon and peak farm activity -- all follow similar patterns of correspondence between the seasonal qi transformations and the practical rhythms of agriculture. Summer's evaporation and autumn's rainfall maintain the water balance of fields; the sun's fullest warmth converts into the growth force of crops.
Section 4: Medicine and Six Combination Qi Transformation
Ancient medicine was inseparable from yin-yang and Five-Phase theory. The principles of Six Combination Qi Transformation also found application in medicine.
The Zuozhuan, first year of Duke Zhao, records the physician He's diagnosis of the Marquis of Jin:
"The illness cannot be treated. This is what comes from being too close to the women's quarters; the illness is like possession (gu). It is neither ghosts nor food, but confusion that has destroyed the will... Heaven has six qi, which descend to produce the five flavors, manifest as the five colors, and verify as the five tones. When in excess, they produce six kinds of illness. The six qi are yin, yang, wind, rain, darkness, and brightness. They divide into the four seasons and are ordered as the five periods; when they go to excess, there is calamity."
The physician He uses the "six qi" to explain illness -- when any of the six qi of yin, yang, wind, rain, darkness, and brightness exceeds its proper measure, the corresponding illness arises. The "six" of these "six qi" implicitly echoes the "six" of the Six Combinations.
If the six qi are mapped to the Six Combinations:
- Yin qi -- Zi-Chou transforming into Earth (winter's extreme yin; excess yin produces cold illness)
- Yang qi -- Wu-Wei transforming into Sun and Moon (summer's extreme yang; excess yang produces heat illness)
- Wind qi -- Yin-Hai transforming into Wood (early spring when wind-Wood prevails; excess wind produces limb illness)
- Rain qi -- Si-Shen transforming into Water (rain is most frequent around the summer-autumn transition; excess rain produces abdominal illness)
- Dark qi -- Chen-You transforming into Metal (late spring/mid-autumn's variable cloudiness; excess darkness produces confusion illness)
- Bright qi -- Mao-Xu transforming into Fire (vernal equinox/late autumn's great variation in daylight; excess brightness produces heart illness)
Though this mapping is not explicitly stated in ancient texts, its logic is consistent with the meaning of Six Combination Qi Transformation.
Ancient medicine held that the qi of the human body corresponds to and resonates with the qi of Heaven and Earth. The operation of Six Combination Qi Transformation in the cosmos is reflected in the human body as the qi-transformation of the six channels (Greater Yang, Bright Yang, Lesser Yang, Greater Yin, Lesser Yin, Terminal Yin). Though the six-channel doctrine was systematized in the era of the Huangdi Neijing (Yellow Emperor's Inner Canon), its roots can be traced to the pre-Qin yin-yang and Five-Phase teachings.