（出丹溪）
脉。血之所为。属阴。大。洪之别名。火之象。属阳。其病得之于内伤者。阴虚为阳所乘。故
脉大。当作虚多治之。其病得之于外伤者。邪客于经。脉亦大。当作邪胜治之。合二者而观之。皆
病症方长之势也。谓之病进。不亦宜乎。（机按。脉之大。一也。内伤得之。为虚多。外伤得之。为
邪胜。便要审证。如此分别。不知太素家诊得此脉。亦将审其贵贱。而如此分别否乎。）
（出东坡）
脉之难也尚矣。至虚有实候。大实有羸状。差之毫厘。疑似之间。便有死生祸福之异。可不
慎欤。病不可不
谒医。医之明脉者。天下盖一二数。亦因其长而护其短耳。士大夫多秘所患。求诊以验医之能否。
使索病于冥漠之中。辨虚实冷热于疑似之间。医不幸而失。终不肯自谓失也。则巧饰遂非以全其名。
至于不救。则曰是固难治也。间有谨愿者。虽或因主人之言。复参以己之所见。两存而杂治。以
故药之不效。此世之通患而莫之悟也。吾平生求医。盖于平时默验其工拙。至于有疾而求疗。必
先尽告以所患。使医了然知患之所在。虚实冷热。已定于中矣。然后求诊。则脉之疑似不能惑也。
故虽中医。治吾病常愈。吾求疾愈而已。岂以困医为事哉。（机按。东坡有宋名人。尚不使医索病
于脉者。盖以脉虚而病实者。脉实而病虚者。脉有不相应故也。吁。病且难凭于脉。而欲凭脉知富
贵贫贱。宁不为东坡笑耶。）
(From Zhu Danxi)
The pulse is the manifestation of blood. It belongs to Yin. The "Large" (Da) pulse is an alias for the "Surging" (Hong) pulse. It symbolizes Fire and belongs to Yang. If the disease arises from internal injury, it is because Yin deficiency allows Yang to invade; thus, a Large pulse appears, and treatment should focus primarily on deficiency. If the disease arises from external pathogenic factors, it is because pathogens reside in the meridians, causing the pulse to also become Large; treatment should focus on excess pathogens. Observing both cases together, they both represent the momentum of the disease progressing. To call this "disease progression" is indeed appropriate. (Zhu Zhenheng's Note: The phenomenon of a Large pulse is the same. For internal injuries, it indicates predominance of deficiency; for external injuries, it indicates predominance of pathogens. One must carefully examine the syndrome to distinguish them accordingly. I wonder if those versed in Taisu Pulse Diagnosis also distinguish based on the patient's social status when detecting this pulse?)
(From Su Dongpo)
The difficulty of pulse diagnosis has existed for a long time. Extreme deficiency may present with signs of excess, and extreme excess may present with signs of debility. A difference of a hair's breadth, within the realm of ambiguity, can lead to differences between life and death, or disaster and fortune. Can one not be cautious? When ill, one must seek a physician. However, physicians who truly understand pulse diagnosis are rare, numbering only one or two in the world. This is often because they rely on their strengths while concealing their weaknesses. Scholar-officials often conceal their ailments, seeking diagnosis to test the physician's competence. This forces the physician to guess the cause in the dark and distinguish between deficiency/excess and cold/heat amidst ambiguity. If the physician unfortunately errs, they are reluctant to admit fault, instead using clever rhetoric to cover up mistakes to preserve their reputation. When the condition becomes incurable, they claim it was inherently difficult to treat. Occasionally, there are honest and cautious physicians who, relying partly on the host's account and partly on their own observations, combine treatments. Consequently, the medication often proves ineffective. This is a common malady of the world that goes unnoticed. Throughout my life, I have evaluated physicians by observing their skill during normal times. When I fall ill and seek treatment, I first disclose all symptoms completely, allowing the physician to clearly locate the illness and form a judgment on deficiency/excess and cold/heat internally. Only then do I undergo pulse diagnosis, so that ambiguous pulse signs cannot confuse me. Thus, even an average physician can often cure my illness. I only seek recovery from illness; I do not intend to make things difficult for the physician. (Zhu Zhenheng's Note: Su Dongpo, a famous figure of the Song Dynasty, did not allow physicians to deduce diseases solely from pulses. This is because there are cases where the pulse is deficient but the disease is excess, and vice versa, due to the mismatch between pulse and pathology. Alas, if the disease itself is hard to rely upon via pulse alone, how can one rely on the pulse to determine wealth and nobility? Would this not become a laughingstock for Su Dongpo?)