子午少阴地，太阴丑未墟。
寅申少阳属，阳明卯酉欤。
辰戌太阳配，厥阴巳亥居。
其中主司天乙位，根据此顺数诸。
进三司地位，进四客之初。
如遇子午岁，少阴乃司天。
除本位数至第三，阳明为在泉。
第四太阳即客气，初气次厥阴。
复次少阴自大寒，后主上半年。
次太阴，次少阳，终阳明。自大暑后主下半年，每气六十日八十七刻半，布于生气之上，
余同主客之图。
\r五运六气枢要之图\ps127a16.bmp\r
三阴三阳，天之六气，标也；金木水火土，地之五行，本也。（生长化收藏。）太阴湿土、
少阳相火为标本同。至于少阴君火、太阳寒水，则阴阳寒热互相不同，何也？盖君火司于子午，
午者，一阴始生之位。火本热，而其气当阴生之初，故君火属少阴也。水居北方子，子者，一阳
始生之位。水本寒，而其气当阳生之初，故寒水属太阳也。此水火之标本所以异者也。土者乃西
南维未之位，应于长夏之月。未乃午之次，为阴矣，故土曰太阴。相火司于寅，寅乃丑之次，为
阳矣，故相火曰少阳。木者位居东方震，在人主肝。虽阳，处膈下，居阴之位，故属厥阴也。金，
西方兑，在人主肺，虽阴脏，居膈上，处阳之位，故属阳明也。经曰∶少阳太阴从本治，少阴太
阳从标治，阳明厥阴不从标本，从乎中治。阳明之中，太阴也。（太阴阳明为表里而相合。）厥
阴之中，少阳也。（厥阴少阳为表里而相合。）
子午年，少阴君火司天；丑未年，太阴湿土司天。
寅申年，少阳相火司天；卯酉年，阳明燥金司天。
辰戌年，太阳寒水司天；巳亥年，厥阴风木司天。
其中主气司天的确定方法是以“乙”位（即地支对应的固定位置）为基准，根据此顺序顺推其余各气。
向前推三位即为在泉之气的位置，向前推四位则为客气初气的位置。
如果遇到子午年，少阴君火便司天。
除去本位数至第三位，阳明燥金便在泉。
第四位是太阳寒水作为客气，初气则是厥阴风木。
接着从大寒节气开始，少阴君火主上半年。
随后依次是太阴湿土、少阳相火，最后是阳明燥金。自大暑节气后，主下半年，每气六十日八十七刻半，分布于生气之上，其余类推见主客之图。
三阴三阳，是天之六气的标象；金木水火土，是地之五行的本元。（对应生长化收藏。）太阴湿土和少阳相火，标本属性相同。至于少阴君火和太阳寒水，则阴阳寒热性质互不相同，为什么呢？因为君火主管子午年，午时，是一阴始生的位置。火本性热，但其气处于阴生之初，所以君火归属于少阴。水居于北方子位，子时，是一阳始生的位置。水本性寒，但其气处于阳生之初，所以寒水归属于太阳。这就是水火标本不同的原因。土位于西南维度的未位，对应长夏月份。未是午的下一位，属于阴，所以土称为太阴。相火主管寅年，寅是丑的下一位，属于阳，所以相火称为少阳。木位居东方震卦，在人身体中主肝。虽然属阳，但位于膈下，处于阴的位置，所以归属于厥阴。金，位于西方兑卦，在人身体中主肺，虽然是阴脏，但位于膈上，处于阳的位置，所以归属于阳明。经文说：少阳和太阴从本治疗，少阴和太阳从标治疗，阳明和厥阴不单纯从标或本治疗，而是从中气治疗。阳明的中气是太阴。（太阴与阳明互为表里而相合。）厥阴的中气是少阳。（厥阴与少阳互为表里而相合。）
In the Zi-Wu years, Shaoyin (Lesser Yin) governs the Heaven Qi; in the Chou-Wei years, Taiyin (Greater Yin) governs the Heaven Qi.
In the Yin-Shen years, Shaoyang (Lesser Yang) governs; in the Mao-You years, Yangming (Greater Yang) governs.
Chen-Xu years are paired with Taiyang (Greater Yang); Si-Hai years are inhabited by Jueyin (Terminal Yin).
The main Heaven Qi (fixed atmospheric influence) begins at the Yi position (the first Qi), and one proceeds sequentially to determine the others based on this order.
When advancing three steps, one reaches the position of the Heaven Qi; when advancing four steps, one reaches the beginning of the Guest Qi (changing atmospheric influence).
If it is a Zi-Wu year, Shaoyin (Lesser Yin) becomes the Heaven Qi.
Excluding the Heaven Qi's own position and counting to the third, Yangming (Greater Yang) becomes the Earth Qi (opposite position).
The fourth position, Taiyang (Greater Yang), is the initial Guest Qi, followed by Jueyin (Terminal Yin).
Subsequently, Shaoyin (Lesser Yin) begins from the Major Cold solar term, primarily governing the first half of the year.
Next is Taiyin (Greater Yin), then Shaoyang (Lesser Yang), ending with Yangming (Greater Yang). From after the Great Heat solar term, it governs the second half of the year. Each Qi lasts sixty days and eighty-seven and a half ke (ancient time units), distributed above the generating Qi, with the rest following the diagram of Main and Guest Qi.
Three Yin and Three Yang constitute the manifestations (Biao) of the Six Qi of Heaven; Metal, Wood, Water, Fire, and Earth constitute the roots (Ben) of the Five Elements of Earth (corresponding to Growth, Transformation, Harvest, Storage, and Birth). Taiyin Damp Earth and Shaoyang Ministerial Fire have identical Root and Manifestation attributes. As for Shaoyin Sovereign Fire and Taiyang Cold Water, their Yin-Yang and Cold-Heat attributes differ mutually. Why? Because Sovereign Fire governs the Zi-Wu years. Wu represents the position where One Yin begins to generate. Fire is inherently hot, but its Qi occurs at the beginning of Yin generation; thus, Sovereign Fire belongs to Shaoyin (Lesser Yin). Water resides in the Northern Zi position. Zi represents the position where One Yang begins to generate. Water is inherently cold, but its Qi occurs at the beginning of Yang generation; thus, Cold Water belongs to Taiyang (Greater Yang). This is why the Roots and Manifestations of Water and Fire differ. Earth occupies the Wei position in the South-West dimension, corresponding to the months of Late Summer. Wei follows Wu and is Yin; therefore, Earth is called Taiyin (Greater Yin). Ministerial Fire governs the Yin year. Yin follows Chou and is Yang; therefore, Ministerial Fire is called Shaoyang (Lesser Yang). Wood is located in the East Zhen trigram and governs the Liver in humans. Although Yang in nature, it resides below the diaphragm, in a Yin position; thus, it belongs to Jueyin (Terminal Yin). Metal is in the West Dui trigram and governs the Lungs in humans. Although an Yin organ, it resides above the diaphragm, in a Yang position; thus, it belongs to Yangming (Greater Yang). The Classics state: "Shaoyang and Taiyin are treated according to the Root; Shaoyin and Taiyang are treated according to the Manifestation; Yangming and Jueyin do not follow the Root or Manifestation but are treated according to the Middle Qi." The Middle Qi of Yangming is Taiyin (Taiyin and Yangming are exterior-interior pairs and harmonize). The Middle Qi of Jueyin is Shaoyang (Jueyin and Shaoyang are exterior-interior pairs and harmonize).