一论胃气在人之脉固滑而和。本是或有邪淫之来。此脉浑然在中。邪淫日久。此气残伤
。残伤至尽。生气殄矣。所以人须病。而脉犹有胃气者可医。无则不能治也。故胗之时。既是邪
脉。犹当表里之中。寻取胃气也。此脉但可被邪脉伤。终不与邪脉混。故当审察分看。不可
茫茫然无杂别也。人能知此医理。斯过半矣。
一论大肠脉。自外而下降。三焦脉自内而上升。小肠脉。自内而下降。膀胱脉。自外而
上升。故内经云。天阴自上而降。地阳自下而升。是此意也。
详论
一论前载六淫之气来应指下。必有太过不及之形也。倘六脉不实不坚。且散且聚。而症
却在中。此无形而有病也。殊不知人身有六气。有五运。既无六气有余之邪。则必属五运不足之
邪
使毕已之谓欤。邪已遏。正未复。此意也。兼前论看。
一论寒热交争者何也。盖阴外乘阳。阳与阴争（此言寸也）或阳乘阴。阴与阳争。（此言
尺也）
。司治者在表阴邪当升发。以复其阳之性。在里阳邪当降敛。以复其阴之性。阴阳得位。于
寒热何争之有。若夫阳分洪数。或阴分蹇涩。此乃偏胜之脉。惟寒惟热而已。不至于寒热争
Article 1: The Stomach Qi (Wei Qi, stomach energy) in a person's pulse is inherently slippery and harmonious. Originally, this may be due to the arrival of pathogenic factors. In such cases, the pulse appears profound and central under the fingers. If pathogens remain for a long time, they will damage this Qi. When this Qi is completely exhausted, the vital life force ceases. Therefore, even if a person is ill, if there is still Stomach Qi in the pulse, it can be treated; if absent, it cannot be treated. Thus, during pulse diagnosis, although pathological pulses are present, one must still search within the exterior and interior for traces of Stomach Qi. This pulse of Stomach Qi can only be injured by pathological pulses but ultimately does not mix with them. Therefore, careful observation and distinction are required; one must not be confused without differentiation. If one understands this medical principle, success in treatment is more than halfway achieved.
Article 2: The pulse of the Large Intestine descends from the exterior, while the pulse of the Sanjiao (Triple Burner) ascends from the interior. The pulse of the Small Intestine descends from the interior, and the pulse of the Bladder ascends from the exterior. Hence, the *Neijing* (Classic of Internal Medicine) states: "Heavenly Yin descends from above, Earthly Yang ascends from below," which reflects this meaning.
Detailed Discussion:
Article 1: As recorded previously, when the Six Excesses (Liu Yin, six types of external pathogenic factors: wind, cold, summerheat, dampness, dryness, fire) arrive, the pulse felt under the fingers must show signs of excess or deficiency. If the six positions of the pulse are neither solid nor firm, appearing both scattered and gathered, yet the symptoms manifest internally, this indicates disease caused by formless pathogens. One should not fail to realize that the human body possesses Six Qi and Five Movements (Wu Yun, the movement of the five phases). Since there is no excess pathogen from the Six Qi, it must belong to the deficiency pathogen arising from the Five Movements. This refers to the state where pathogens have been suppressed but healthy Qi has not yet recovered. Consider this in conjunction with the previous discussion.
Article 2: What constitutes the contention between Cold and Heat? It is generally because Yin attacks Yang from the exterior, causing Yang to contend with Yin (this refers to the Cun position at the wrist), or Yang attacks Yin, causing Yin to contend with Yang (this refers to the Chi position at the wrist). If Yin pathogens are in the exterior, they should be dispersed and raised to restore their Yang nature; if Yang pathogens are in the interior, they should be descended and collected to restore their Yin nature. When Yin and Yang are in their proper places, what contention of Cold and Heat could there be? However, if the Yang position shows a洪 (Hong, surging) and 数 (Shuo, rapid) pulse, or the Yin position shows a 蹇 (Jian, slow/stagnant) and 涩 (Se, choppy) pulse, these are merely pulses of excessive dominance, representing either pure Cold or pure Heat, not reaching the level of contention between Cold and Heat.