（医生）能说出医理却不理解前人处方用药的意图，因此医生们大多不再使用这些方药，这也是不足为奇的事。况且脉象缓而浮的，是中风病，所以出现怕风、怕冷、发热等症状，张仲景用桂枝汤（Cinnamon Twig Decoction）来对治它；脉象浮紧而涩的，是伤寒病，所以出现头痛、发热、身体疼痛、腰痛、骨节疼痛、怕冷、无汗且气喘等症状，张仲景用麻黄汤（Ephedra Decoction）来对治它。至于中风见脉浮紧、伤寒见脉浮缓的情况，张仲景都用大青龙汤（Major Blue Green Dragon Decoction）来对治它，为什么呢？我曾经深入探究其中的旨意，如果证候与脉象相对照，没有不随手治愈的。为什么这样说呢？风邪伤及卫分（Wei level, the defensive aspect of Qi），卫气属于阳；寒邪伤及营分（Ying level, the nutritive aspect of Blood），营血属于阴。营血运行于脉中，卫气运行于脉外。风邪伤及卫分，则风邪侵犯阳气，导致阳气不固，发散而为汗，因此出现自汗，这是表虚的表现，所以张仲景用桂枝汤以发散邪气，用芍药（White Peony Root）以调和血液。大概中风病，病变在脉之外……
(Physicians) who can expound medical principles but do not understand the intent behind previous physicians' prescription and medication usage will consequently be rarely used by other doctors; this is hardly surprising. Furthermore, a pulse that is slow (Huan) and floating (Fu) indicates Wind-Strike (Zhong Feng); thus, symptoms such as aversion to wind (Se Se), shivering aversion to cold (Xi Xi), and mild fever (Xi Xi) occur. Zhang Zhongjing prescribes Guizhi Tang (Cinnamon Twig Decoction) to address this. A pulse that is floating (Fu), tight (Jin), and choppy (Se) indicates Cold Damage (Shang Han); thus, symptoms such as headache, fever, body pain, lower back pain, joint pain, aversion to cold, anhidrosis (absence of sweating), and wheezing occur. Zhang Zhongjing prescribes Mahuang Tang (Ephedra Decoction) to address this. As for cases where Wind-Strike presents with a floating-tight pulse or Cold Damage presents with a floating-slow pulse, Zhang Zhongjing prescribes Da Qing Long Tang (Major Blue Green Dragon Decoction) to address both. Why? I have deeply investigated these principles. If the clinical manifestations correspond accurately with the pulse diagnosis, recovery follows effortlessly. Why is this so? Wind pathogen injures the Defensive (Wei) level, which belongs to Qi; Cold pathogen injures the Nutritive (Ying) level, which belongs to Blood. Nutritive Qi circulates within the vessels, while Defensive Qi circulates outside the vessels. When Wind injures the Defensive level, the Wind pathogen attacks the Yang Qi, causing it to fail in its consolidating function and scatter outward as sweat, resulting in spontaneous sweating. This indicates exterior deficiency. Therefore, Zhang Zhongjing uses Guizhi Tang to disperse the pathogen and Shaoyao (Paeonia Root) to harmonize the blood. Generally, when Wind-Strike occurs, the pathology lies outside the vessels, and the disease...