子午少阴君火天，阳明燥金应在泉。丑未太阴太阳治，寅申少阳厥阴联。卯酉却与
子午倒，辰戌巳亥亦皆然。每岁天泉四间气，上下分统各半年。
【注】天干起运，地支起气。此言地之阴阳，正化、对化，加临主气，六位之客气也。
如子午之岁，少阴君火治之，起司天也。阳明燥金在下，起在泉也。气由下而升上，故
以在下之阳明起之，阳明二阳，二阳生三阳，三阳太阳，故太阳寒水为客初气，即地之左
间也。三阳，阳极生一阴，一阴厥阴，故厥阴为客二气，即天之右间也。一阴生二阴，二
阴少阴，故少阴为客三气，即司天之气也。二阴生三阴，三阴太阴，故太阴为客四气，即
天之左间也。三阴阴极生一阳，一阳少阳，故少阳为客五气，即地之右间也。一阳生二阳，
二阳阳明，故阳明为客六气，即在泉之气也。丑未寅申之岁，皆仿此法起之。卯酉却与子
午倒换，辰戌却与丑未倒换，巳亥却与寅申倒换。谓卯酉之岁，阳明燥金司天，少阴君
火在泉；辰戌之岁，太阳寒水司天，太阴湿土在泉；巳亥之岁，厥阴风木司天，少阳相
火在泉；彼此倒换也。每岁司天在泉左右四间气者，即六气分统上下，本年司天统主上
半年，在泉统主下半年之统气也。
\r客气司天在泉间气图\ps110-4a10.bmp\r
In the years of Zi and Wu, Shaoyin Junhuo (Ministerial Fire) governs the Heaven sector, and Yangming Zaojin (Dryness and Metal) governs the Earth sector. In the years of Chou and Wei, Taiyin Shitu (Dampness and Earth) and Taiyang Hanshui (Cold and Water) preside; in the years of Yin and Shen, Shaoyang Xianghuo (Ministerial Fire) and Jueyin Fengmu (Wind and Wood) are linked. The situation in the years of Mao and You is reversed compared to that of Zi and Wu, and the same applies to Chen and Xu, as well as Si and Hai. Each year, the four interstitial Qi (Jianqi) of the Heaven and Earth sectors are divided between the upper and lower halves, each governing half a year.
[Note] Heavenly Stems initiate the Yun (Five Phases movement), and Earthly Branches initiate the Qi (Six Qi movement). This passage discusses the Zhenghua (Direct Transformation) and Duihua (Opposite Transformation) of Yin and Yang on Earth, along with the six positions of Keqi (Adventitious Qi) superimposed upon the Zhuqi (Primary Qi). For instance, in the years of Zi and Wu, Shaoyin Junhuo presides, which is designated as Sizhi (Governing Heaven). Yangming Zaojin is located below, designated as Zaiquan (Governing Earth). Qi ascends from below to above; therefore, calculation begins with Yangming below. Yangming belongs to Er-yang (Two Yangs); Er-yang generates San-yang (Three Yangs), and among San-yang, Taiyang represents the First Adventitious Qi, which corresponds to the Left Interstitial Qi of the Earth. When San-yang reaches its extreme, it generates Yi-yin (One Yin), which is Jueyin; thus, Jueyin constitutes the Second Adventitious Qi, corresponding to the Right Interstitial Qi of Heaven. Yi-yin generates Er-yin (Two Yins), which is Shaoyin; thus, Shaoyin constitutes the Third Adventitious Qi, which is the Sizhi Qi. Er-yin generates San-yin (Three Yins), which is Taiyin; thus, Taiyin constitutes the Fourth Adventitious Qi, corresponding to the Left Interstitial Qi of Heaven. When San-yin reaches its extreme, it generates Yi-yang (One Yang), which is Shaoyang; thus, Shaoyang constitutes the Fifth Adventitious Qi, corresponding to the Right Interstitial Qi of Earth. Yi-yang generates Er-yang (Two Yangs), which is Yangming; thus, Yangming constitutes the Sixth Adventitious Qi, which is the Zaiquan Qi. The calculation for the years of Chou, Wei, Yin, and Shen follows this method. However, the years of Mao and You are reversed relative to Zi and Wu; Chen and Xu are reversed relative to Chou and Wei; Si and Hai are reversed relative to Yin and Shen. This means: in the years of Mao and You, Yangming Zaojin governs Heaven and Shaoyin Junhuo governs Earth; in the years of Chen and Xu, Taiyang Hanshui governs Heaven and Taiyin Shitu governs Earth; in the years of Si and Hai, Jueyin Fengmu governs Heaven and Shaoyang Xianghuo governs Earth; they mutually exchange positions. The four interstitial Qi surrounding Sizhi and Zaiquan each year refer to the Six Qi dividing the upper and lower realms: the Sizhi Qi governs the first half of the year, and the Zaiquan Qi governs the second half of the year.