南方心脉其形何似师曰心者火也名少阴其脉洪大而长是心脉也心病自得洪大者愈也假令脉来微去大故名反病在里也
脉来头小本大故名覆病在表也上微头小者则汗出下微本大者则为关格不通不得尿头无汗者可治有汗者死
心者火也居于南方其位在上经名少阴其脉洪大而长是心脉也心病自得洪大者是心火得令故愈火阳也阳位于外而根于
内假令脉来微而去大来者主里去者主表是外实而内虚也故名反此病在里也脉来头小而本大本来主里头去主表是内实而外
虚也故名覆此病在表也或表或里所不洪大之处则病在焉反复者阴不宜偏胜而阳不宜偏负今阴胜阳负是阴阳之反复犹颠倒
也上微而头小者则表阳不固而汗出下微而本大者则阴阳关格而不通不得小便头无汗者阳未至绝也故可治有汗则阳绝故死
经所谓绝汗出也
西方肺脉其形何似师曰肺者金也名太阴其脉毛浮也肺病自得此脉若得缓迟者皆愈若得数者则剧何以知之数者南方火
火克西方金法当壅肿为难治也
肺者金也居于西方其位在右经名太阴其脉如毛而气浮也肺病自得毛浮之脉金得令也得缓迟之脉土生金也故皆愈若得
数脉者则剧何以知之数者南方火也火克西方之金金被火刑法当壅肿此为难治也
师曰立夏得洪大脉是其本位其人病身体苦疼重者须发其汗若明日身不疼不重者不须发汗若汗 自出者明日便解矣
何以言之立夏得洪大脉是其时脉故使然也四时仿此
火旺于夏立夏得洪大脉是其本位之盛也其人病身体苦疼痛而沉重者风寒郁其皮毛也（立夏湿动湿郁则身重也）须发
其汗若至明日身不疼不重者外邪欲解不须发汗也俟之必汗自出若汗 然自出者明日便解矣何以言之立夏得洪大脉是其
脉之应时故使然也四时解期仿此类推
What does the heart pulse of the South resemble? The Master said: The Heart belongs to Fire and is named Shaoyin (Hand-Shaoyin Heart Meridian). Its pulse is surging, large, and long; this is the heart pulse. If a patient with Heart disease naturally presents a surging pulse, it indicates recovery. However, if the pulse arrives weakly but departs strongly, it is called "Fan" (Reverse), indicating the pathology is in the Interior.
If the pulse head is small and the root is large, it is called "Fu" (Inverted), indicating the pathology is in the Exterior. If the upper part is weak and the head is small, sweating will occur. If the lower part is weak and the root is large, it leads to Guan-Ge (obstruction and reversal) where urination is impossible. Cases with no sweat on the head are treatable; those with sweat on the head are fatal.
The Heart belongs to Fire, located in the South, positioned superiorly, and its meridian is named Shaoyin. Its pulse is surging, large, and long; this is the heart pulse. If a patient with Heart disease naturally presents a surging pulse, it is because Heart-Fire is commanding the season, hence recovery. Fire is Yang; Yang Qi resides externally but is rooted internally. If the pulse arrives weakly but departs strongly, arrival governs the Interior and departure governs the Exterior; this represents Excess in the Exterior and Deficiency in the Interior, hence termed "Fan," with pathology in the Interior. If the pulse head is small and the root is large, the root governs the Interior and departure governs the Exterior; this represents Excess in the Interior and Deficiency in the Exterior, hence termed "Fu," with pathology in the Exterior. Whether in the Exterior or Interior, wherever the pulse is not surging and large is where the pathology lies. The term "Fan-Fu" implies that Yin should not prevail excessively, nor should Yang be deficient. Currently, Yin prevails while Yang is deficient, resembling an inversion of Yin and Yang. Upper weakness and smallness at the head indicate insecure Exterior Yang leading to sweating. Lower weakness and largeness at the root indicate obstruction of Yin and Yang preventing urination. No sweat on the head means Yang has not yet exhausted, thus treatable. Sweat on the head means Yang has exhausted, thus fatal. This is what the Classics refer to as "Jue Han" (Sweat of Exhaustion).
What does the Lung pulse of the West resemble? The Master said: The Lung belongs to Metal and is named Taiyin (Hand-Taiyin Lung Meridian). Its pulse is floating like hair. If a patient with Lung disease presents this pulse, and if it is accompanied by slow and moderate pulses, recovery occurs. If it is accompanied by rapid pulses, the condition worsens. How do we know this? Rapid pulses belong to Southern Fire. Fire controls Western Metal. According to principle, swelling and stagnation should occur, making it difficult to treat.
The Lung belongs to Metal, located in the West, positioned on the right, and its meridian is named Taiyin. Its pulse floats like hair. When a patient with Lung disease naturally presents a floating-like-hair pulse, Metal is commanding the season. If accompanied by slow and moderate pulses, Earth generates Metal, hence recovery. If rapid pulses are present, the condition worsens. How do we know this? Rapid pulses belong to Southern Fire. Fire controls Western Metal. Metal subjected to Fire's punishment should manifest swelling according to principle, which is difficult to treat.
The Master said: In the beginning of Summer, a surging and large pulse appears, which is its proper position. If the patient suffers from body pain and heaviness, diaphoresis (sweating) must be induced. If the next day the body is no longer painful or heavy, diaphoresis is unnecessary. If sweat occurs spontaneously, the illness resolves the next day.
Why is this so? A surging and large pulse in the beginning of Summer is the pulse corresponding to the season, hence the result. The four seasons follow this pattern.
Fire prospers in Summer. The appearance of a surging and large pulse at the beginning of Summer reflects the prosperity of its proper position. If the patient suffers from body pain and heaviness, it is due to Wind-Cold stagnating in the skin and hair (At the beginning of Summer, Dampness activates; Dampness stagnation causes body heaviness). Diaphoresis must be induced. If by the next day the body is no longer painful or heavy, the external pathogen is resolving, and diaphoresis is unnecessary. Waiting for spontaneous sweating will suffice. If sweat flows profusely and spontaneously, the illness resolves the next day. Why is this so? A surging and large pulse at the beginning of Summer is the pulse responding to the season, hence the result. The timing of resolution for the four seasons can be deduced by analogy from this category.