夫五脏者，肝象木，心象火，脾象土，肺象金，肾象水。其气更休更旺，互虚互实。自
相乘克，内生于病，此为正经自病，非外邪伤之也。若寒温失节，将适乖理，血气虚弱，为
风湿阴阳毒瓦斯所乘，则非正经自生，是外邪所伤，故名横病也。其病之状，随邪所伤之脏而
形证见焉。其汤熨针石，别有正方，补养宣导，今附于后。
《养生方·导引法》云∶从膝以下有病，当思齐下有赤光，内外连没身也；从膝以上至腰
有病，当思脾黄光；从腰以上至头有病，当思心内赤光；病在皮肤寒热者，当思肝内青绿光
。皆当思其光，内外连而没已身，闭气，收光以照之。此消疾却邪甚验。笃信，精思行之，
病无不愈。
脾胀病者，是脾虚为风邪所乘，正气与邪气交结，令脾气不宣调，拥聚而胀也。其病喜
哕，四肢急，体重不能胜衣也。
心痛者，风冷邪气乘于心也。其痛发，有死者，有不死者，有久成疹者。
心为诸脏主而藏神，其正经不可伤，伤之而痛，为真心痛，朝发夕死，夕发朝死。
心有支别之络脉，其为风冷所乘，不伤于正经者，亦令心痛，则乍间乍甚，故成疹不死
。
又，心为火，与诸阳会合，而手少阴心之经也。若诸阳气虚，少阴之经气逆，谓之阳虚
阴厥，亦令心痛，其痛引喉是也。
又，诸脏虚受病，气乘于心者，亦令心痛，则心下急痛，谓之脾心痛也。
足太阴为脾之经，与胃合。足阳明为胃之经，气虚逆乘心而痛。其状腹胀，归于心而痛
甚，谓之胃心痛也。
肾之经，足少阴是也，与膀胱合；膀胱之经，足太阳是也。此二经俱虚而逆，逆气乘心
而痛者，其状下重，不自收持，苦泄寒中，为肾心痛也。
诊其心脉微急，为心痛引背，食不下。寸口脉沉紧，苦心下有寒，时痛。关上脉紧，心
下苦痛。左手寸口脉沉，则为阴绝；阴绝者，无心脉也，苦心下毒痛。
The five zang organs correspond to the five elements: the Liver corresponds to Wood, the Heart to Fire, the Spleen to Earth, the Lung to Metal, and the Kidney to Water. Their Qi alternates between rest and prosperity, appearing deficient or excess in relation to one another. If they mutually overcome and restrict each other (Wu Xing mutual overacting), disease arises internally; this is termed "self-disease of the regular meridians" (Zheng Jing Zi Bing), not caused by external pathogens. However, if regulation of cold and warmth is lost, and daily conduct violates proper principles, leading to deficiency of Blood and Qi, and invasion by Wind-Dampness or Yin-Yang toxic factors, it is not a self-generated disease of the regular meridians but an injury by external pathogens; hence it is named "transverse disease" (Heng Bing). The manifestations of such diseases appear according to the specific zang organ injured by the pathogen. Decoctions, heat compresses, acupuncture, and stone therapy have separate standard prescriptions; methods for tonification, nourishment, and guidance/diffusion are attached below.
The *Yang Sheng Fang* (Prescriptions for Nourishing Life) · *Dao Yin Fa* (Guiding and Pulling Methods) states: For diseases from the knees downward, visualize red light from below, connecting internally and externally to envelop the body; for diseases from the knees upward to the waist, visualize yellow light within the Spleen; for diseases from the waist upward to the head, visualize red light within the Heart; for diseases in the skin accompanied by chills and fever, visualize green-blue light within the Liver. In all cases, visualize the light connecting internally and externally to cover oneself, hold the breath, and gather the light to illuminate the affected area. This method is highly effective in eliminating disease and expelling evil. With firm belief and focused contemplation practiced diligently, no disease will remain uncured.
Spleen Distension Disease (Pi Zhang) occurs when Spleen deficiency allows Wind-Evil to invade. The Righteous Qi and Evil Qi knot together, preventing the Spleen Qi from being smooth and regulated, leading to stagnation, accumulation, and distension. Symptoms include a tendency toward hiccups (Yue), stiffness and urgency in the four limbs, and heavy body weight such that even clothes feel unbearable.
Heart Pain (Xin Tong) results from Wind-Cold evil invading the Heart. Upon onset of pain, some patients die, while others survive; some develop chronic stubborn conditions (Zhen) over time.
The Heart is the master of all zang organs and houses the Spirit (Shen). Its regular meridians must not be injured. If injured and painful, it is called True Heart Pain (Zhen Xin Tong); onset in the morning leads to death in the evening, and onset in the evening leads to death in the morning. The Heart has branch collateral vessels. If invaded by Wind-Cold without injuring the regular meridians, heart pain may still occur, characterized by intermittent severity (Zha Jian Zha Shen), resulting in a chronic condition without death.
Furthermore, the Heart belongs to Fire and converges with all Yang meridians, specifically the Hand-Shaoyin Heart Meridian. If Yang Qi is deficient and the Qi of the Shaoyin meridian rebels upward, it is called Yang Deficiency with Yin Collapse (Yang Xu Yin Jue), which also causes heart pain, often radiating to the throat.
Additionally, when other zang organs are deficient and diseased, their pathogenic Qi may rush up to the Heart, causing heart pain characterized by urgent pain below the heart, known as Spleen Heart Pain (Pi Xin Tong).
The Foot-Taiyin Spleen Meridian is paired with the Stomach. The Foot-Yangming Stomach Meridian, if Qi is deficient and rebels upward to attack the Heart causing pain, presents with abdominal distension; when the pathogenic Qi returns to the Heart, the pain intensifies, known as Stomach Heart Pain (Wei Xin Tong).
The Kidney meridian is the Foot-Shaoyin Meridian, paired with the Bladder. The Bladder meridian is the Foot-Taiyang Meridian. If these two meridians are both deficient and rebellious, the counterflow Qi attacks the Heart causing pain. Symptoms include heaviness in the lower body, inability to control oneself, suffering from diarrhea and cold in the middle jiao, known as Kidney Heart Pain (Shen Xin Tong).
Palpation of the Heart pulse showing slight tension indicates heart pain radiating to the back and inability to eat. A deep and tight pulse at the Cun Kou position indicates cold below the heart with intermittent pain. A tight pulse at the Guan position indicates severe pain below the heart. A deep pulse at the left Cun Kou position indicates Yin Extinction (Yin Jue); those with Yin Extinction lack the Heart pulse and suffer from toxic pain below the heart.