夫但知三阳之脉，上循于头，而为头痛，不知厥阴与督脉会于巅，而少阴之骨髓通于脑也。止知风寒
火热在头，而为头痛，又不知足六经之证，上逆于头，而为厥头痛也。足六经之气，能厥逆于头，而为头痛，又
当知寒邪入脑，亦能传于厥阴、少阴，而为阴证也。真头病者，头痛甚，脑尽痛，手足寒至节，死不治。
夫咸谓心痛者，乃胃脘当心而痛，不知有厥心痛
也。厥心痛者，四脏之气，逆客于心下而为痛也。心痛与背相控，善 。如从后触其心，伛偻者，肾心痛
也；心痛如以锥针刺其心，心痛甚者，脾心痛也；心痛色苍苍如死状，终日不得太息者，肝心痛也；卧若
徒居，心痛间，动作痛益甚，色不变，肺心痛也。胃脘当心而痛者，上支两胁，膈咽不通，食不下。各审
其脉证，而随经取之，分别寒、热、虚、实而治之，无有不效者矣。若真心痛者，手足青至节，心痛甚，旦
发夕死，夕发旦死。
腹者，太阴之宫域，肠胃之郛郭。病满痛者，有入腑干脏之分，有缓急轻重之别。如卒暴绞痛，面青肢
冷，此邪直干阴分，急宜刺泄其邪。如暴吐下利，此邪伤阳明，名曰霍乱。若发热头疼，为欲愈也。如厥
逆脉脱，急宜理中圆，甚者加附子， 时脉还，手足温者生，不复则死，此邪甚而胃气绝也。如腹痛
下利而能食者，乃邪入于肠中，利止则愈。此皆直中于内，而有脏腑轻重之分焉。又有邪传五脏，而为腹
痛者，始发于皮毛腠理，正气不能御邪，泮衍于血
脉中，而传溜于内，大气入脏，腹痛下淫。此淫传败绝之证，不及二十日而死，虽卢、扁再生，亦不能
救。此证多有不究心者，悠悠忽忽，反为病家怨尤。
People only know that the three Yang meridians ascend along the head, causing headache (Tóutòng), but they do not know that the Jueyin Meridian of Foot-Shaoyang (Zu Shaoyin) and the Du Meridian intersect at the vertex, nor that the marrow of the Shaoyin Meridian connects to the brain. People only know that wind-cold (Fēnghán), fire-heat (Huǒrè) in the head cause headache, but they do not know that the syndromes of the six meridians of the foot can ascend reversely to the head, resulting in "Jue Headache" (Jué Tóutòng). When the qi of the six foot meridians rebels upward to the head causing headache, one must also understand that cold pathogen invading the brain can transmit to the Jueyin and Shaoyin meridians, manifesting as a Yin syndrome (Yīnzhèng). A true severe head disease involves intense headache with pain throughout the brain, cold hands and feet extending to the joints; this is a fatal condition and cannot be treated.
It is commonly believed that heart pain (Xīntòng) refers to pain in the epigastrium directly behind the heart, but people are unaware of "Jue Heart Pain" (Jué Xīntòng). Jue Heart Pain is caused by the rebellious qi of the four zang organs invading the area below the heart, leading to pain. In heart pain that controls or radiates to the back, accompanied by frequent belching: if it feels as if the heart is being touched from behind, and the patient assumes a stooped posture, this is Kidney Heart Pain (Shèn Xīntòng); if the heart pain feels like being pierced by an awl or needle, and is severe, this is Spleen Heart Pain (Pí Xīntòng); if the complexion is dark greenish-gray resembling a dying state, and the patient cannot take deep sighs all day, this is Liver Heart Pain (Gān Xīntòng); if lying down or resting relieves the pain, but movement exacerbates it, with no change in complexion, this is Lung Heart Pain (Fèi Xīntòng). If the pain is in the epigastrium behind the heart, radiating upward to support both hypochondria, with obstruction in the diaphragm and throat, and inability to eat, these conditions should be carefully examined via pulse and syndrome differentiation. Treatment should follow the meridian pathways, distinguishing between cold, heat, deficiency, and excess, ensuring efficacy. However, True Heart Pain (Zhēn Xīntòng) presents with cyanosis of hands and feet extending to the joints, severe heart pain, where onset in the morning leads to death in the evening, and onset in the evening leads to death in the morning.
The abdomen is the domain of the Taiyin (Spleen) and the outer wall of the intestines and stomach. Syndromes of fullness and pain have distinctions between affecting the fu and zang organs, and differences in severity and urgency. For instance, sudden severe colic with a blue-green face and cold limbs indicates pathogen directly invading the yin aspect; urgent needling to drain the pathogen is required. Sudden vomiting and diarrhea indicate pathogen damaging the Yangming Meridian, termed Huoluan (Cholera-like disorder). If fever and headache appear, it indicates recovery. If there is cold extremities and absent pulse, Lizhong Wan (Regulate the Middle Pill) should be administered urgently, with Fuzi (Prepared Aconite Root) added for severe cases. If the pulse returns and hands/feet become warm within a short time, the patient survives; otherwise, death occurs due to extreme pathogen and exhaustion of Stomach Qi. Abdominal pain with diarrhea but ability to eat indicates pathogen entering the intestines; cessation of diarrhea signifies recovery. These are direct invasions of the interior with varying degrees of zang-fu involvement. Additionally, pathogen transmitting to the five zang organs causes abdominal pain. Initially at the skin and interstices, when righteous qi fails to resist, the pathogen diffuses into the blood vessels, transmits inward, and large pathogen enters the zang organs, causing abdominal pain and profuse discharge. This is a syndrome of pathogenic overflow and deterioration, leading to death within twenty days; even if Bian Que were reborn, he could not save them. Such cases are often neglected due to carelessness, leading to resentment from patients' families.