（前二句言寸，后二句言尺。）
南政子午两寸沉，丑未巳亥左右寻。（左右寸也。）卯酉两尺寅申左，（左尺。）辰戌右尺真分明。
北政阳明沉两寸，太阳少阳左右应。（左右寸也。）少阴两尺厥阴左，（左尺。）太阴右尺何须问。
\r南北政指掌图\pt13a43.bmp\r
其法以南政子年起中指端，北政子年起中指根，俱逆行轮之，凡年辰所值之处，即其不应之位。
如南政子起中指端，即两寸不应，丑年左寸，寅年左尺，右数到底，皆南政
不应之位。北政子年起中指根，如前右数到底，皆北政不应之位。
愚按南北政之义，诸说皆以甲己属土，为五行之尊，故曰南政，似属牵强。夫干支相合
而成花甲，十干之中，复各有所统十干。如六甲干头，必起甲子，至戊末而六十花甲尽；及
至六己，复起甲子，至癸末而六十花甲尽。故甲己年必起于甲子月，甲己日必起于甲子时。
此甲己二干，所以为十干之首，故象君而为南政，其余则北面象臣而为北政，人之血脉，故亦应之。即
奇门诸家，亦独以甲己为符头。此花甲自然之理，固不待土为五行之尊而分南北也。晰理者以谓然否？
\r九宫八风图\pt13a44.bmp\r
九宫八风篇曰∶太一常以冬至之日，居叶蛰之宫四十六日。立春居天留，春
分居仓门，逐节挨宫各居四十六日，惟巽干两宫止四十五日，至干而复反于坎。如是无已，终而复始。
（前两句论述寸脉，后两句论述尺脉。）
南政之年，子年和午年的两寸脉沉伏；丑年、未年、巳年、亥年则需从左右两侧寻找。（指左右两侧的寸脉。）卯年和酉年的两尺脉在左侧显现，寅年和申年的左尺脉清晰分明。
北政之年，阳明经气沉伏于两寸，太阳经和少阳经的气应在左右两侧。（指左右两侧的寸脉。）少阴经气沉伏于两尺，厥阴经气应在左侧，太阴经气应在右侧，这是无需多问的定论。
南北政指掌图 [图片占位]
推演的方法是：以南政之年起于中指指尖，北政之年起于中指指根，均逆时针方向轮转。凡年份地支所对应的位置，就是脉气不应（无反应）的部位。
例如南政之年从子年起于中指指尖，则两寸脉不应；丑年左寸不应，寅年左尺不应，向右数至尽头，都是南政脉气不应的部位。北政之年从子年起于中指指根，如前所述向右数至尽头，都是北政脉气不应的部位。
我按语：关于南北政的含义，各种说法都认为甲己年属土，是五行中的尊贵者，所以称为南政，这似乎有些牵强。天干地支相合而成六十花甲，十天干之中，又各自统领十个天干。比如六个甲开头的干支，必然始于甲子，到戊末六十花甲结束；等到六个己开头的干支，又重新开始起于甲子，到癸末六十花甲结束。所以甲己年必然起于甲子月，甲己日必然起于甲子时。这就是甲己这两个天干之所以为十天干之首，象征君主而称为南政的原因，其余天干则面北象征臣子而称为北政，人体的血脉也因此与之相应。即使是奇门遁甲等各家术数，也唯独以甲己作为符头。这是花甲纪年自然之理，确实不需要因为土是五行之尊来区分南北。明察事理的人认为这种解释是否正确呢？
九宫八风图 [图片占位]
《九宫八风》篇说：太一神常在冬至之日，居住在叶蛰宫四十六天。立春时居住在天留宫，春分时居住在仓门宫，按照节气依次进入各宫，每宫居住四十六天，只有巽宫和干宫只居住四十五天，到了干宫后又返回坎宫。如此循环不已，终而复始。
(The first two sentences discuss the Cun pulse, and the last two sentences discuss the Chi pulse.)
In years of Nan Zheng (Southern Sovereignty), the Cun pulses on both sides are deep and sinking in Zi and Wu years; for Chou, Wei, Si, and Hai years, one must search from the left and right sides. (Referring to the Cun pulses on the left and right sides.) In Mao and You years, the Chi pulses on both sides appear on the left; in Yin and Shen years, the left Chi pulse is clearly distinct.
In years of Bei Zheng (Northern Sovereignty), the Qi of Yangming sinks in the Cun pulses on both sides, while the Qi of Taiyang and Shaoyang responds on the left and right sides. (Referring to the Cun pulses on the left and right sides.) The Qi of Shaoyin sinks in the Chi pulses on both sides, the Qi of Jueyin responds on the left, and the Qi of Taiyin responds on the right; this is a matter that needs no further inquiry.
[Image Placeholder: Diagram of Nan Zheng and Bei Zheng on Palm]
The method of deduction is as follows: For Nan Zheng years, start at the tip of the middle finger; for Bei Zheng years, start at the base of the middle finger. Rotate counter-clockwise. The position corresponding to the Earthly Branch of the year indicates where the pulse should not respond (i.e., be absent or weak).
For example, in Nan Zheng years starting from Zi at the tip of the middle finger, the Cun pulses on both sides do not respond; in Chou years, the left Cun does not respond; in Yin years, the left Chi does not respond. Counting to the right until the end, these are all positions where the pulse does not respond in Nan Zheng years. For Bei Zheng years starting from Zi at the base of the middle finger, counting to the right until the end as described above, these are all positions where the pulse does not respond in Bei Zheng years.
My Commentary: Regarding the meaning of Nan Zheng and Bei Zheng, various theories assert that Jia and Ji years belong to Earth, which is considered the most noble among the Five Elements, thus called Nan Zheng. This seems somewhat forced. Heavenly Stems and Earthly Branches combine to form the sixty-year cycle (Hua Jia). Among the Ten Heavenly Stems, each group governs ten stems. For instance, the six cycles beginning with Jia must start with Jia Zi and end with Wu Wei; when reaching the six cycles beginning with Ji, they restart from Jia Zi and end with Gui Wei. Therefore, Jia and Ji years must begin with the Jia Zi month, and Jia and Ji days must begin with the Jia Zi hour. This is why Jia and Ji are the leaders of the Ten Heavenly Stems, symbolizing the ruler and thus termed Nan Zheng (Southern Sovereignty), while the remaining stems face north, symbolizing ministers, and are termed Bei Zheng (Northern Sovereignty). Human blood vessels correspond to this. Even in schools such as Qimen Dunjia (Mystical Door Hidden Formation), only Jia and Ji are regarded as the "Fu Tou" (starting markers). This is the natural logic of the Hua Jia cycle, which indeed does not require distinguishing between North and South based on Earth being the noblest of the Five Elements. Do those who clarify principles consider this explanation correct?
[Image Placeholder: Nine Palaces and Eight Winds Diagram]
The chapter "Nine Palaces and Eight Winds" states: The Taiyi deity resides in the Yezhe Palace for forty-six days starting from the Winter Solstice. At Li Chun (Start of Spring), it resides in Tianliu Palace; at Chun Fen (Spring Equinox), it resides in Cangmen Palace. Following the solar terms, it moves into each palace, residing there for forty-six days. Only Xun Palace and Qian Palace have a residence period of forty-five days. Upon reaching Qian Palace, it returns to Kan Palace. Thus, it continues endlessly, ending and beginning again.