Suwen: Chapter 24 on Blood, Qi, Form, and Will

Study of Chapter 24 on Blood, Qi, Form, and Will

Overall Paraphrase

The normal excess-deficiency constants of blood and qi in the meridians of the human body are as follows: Taiyang channels (one of the six channels in Chinese medicine with relatively abundant yang qi) normally have more blood and less qi; Shaoyang channels normally have less blood and more qi; Yangming channels normally have more qi and more blood; Shaoyin channels normally have less blood and more qi; Jueyin channels normally have more blood and less qi; Taiyin channels normally have more qi and less blood. These are natural constants. The foot Taiyang channel and the foot Shaoyin channel are interior-exterior paired; the foot Shaoyang channel and the foot Jueyin channel are interior-exterior paired; the foot Yangming channel and the foot Taiyin channel are interior-exterior paired—this is the yin-yang pairing of the foot channels. The hand Taiyang channel and the hand Shaoyin channel are interior-exterior paired; the hand Shaoyang channel and the Heart Governor (i.e., the hand Jueyin Pericardium channel) are interior-exterior paired; the hand Yangming channel and the hand Taiyin channel are interior-exterior paired—this is the yin-yang pairing of the hand channels.

Knowing the locations of afflictions in the hand and foot yin-yang channels, the ancients held that in treatment, one should generally first remove stagnant blood to relieve suffering, then observe the patient's specific needs, and thereafter employ draining of excess and supplementing of deficiency.

To determine the locations of the five viscera Back-Shu points: First measure the distance between the two nipples and take half of it; then use another piece of grass to measure this half-length, joining the two ends to form an angle. Bring this to the back, aligning the upper corner with Dazhui (the most prominent vertebra), and the two lower corners correspond to Feishu (Lung Shu). Moving down one equal segment gives Xinshu (Heart Shu). Moving down another equal segment, the left corner is Ganshu (Liver Shu) and the right corner is Pishu (Spleen Shu). Moving down one more equal segment gives Shenshu (Kidney Shu). This is the method for locating and measuring the five viscera Back-Shu points for moxibustion and needling.

When the body is at ease but the emotions are troubled by worry, disease tends to arise in the blood vessels—treatment may use moxibustion and needling. When the body is at ease and the emotions are joyful and at peace, disease tends to arise in the flesh—treatment may use acupuncture and stone needles. When the body is fatigued by labor but the emotions are happy, disease tends to arise in the sinews—treatment may use hot compression and daoyin exercises. When the body is fatigued by labor and the emotions are also troubled, disease tends to arise in the throat—treatment may use medicinal regulation. When the body frequently experiences fright and fear, and the channels and collaterals are blocked, disease tends to manifest as numbness of the skin and flesh—treatment may use massage and medicinal wine. These are the five types of form and will.

Needling the Yangming channel may let out both blood and qi. Needling the Taiyang channel is suitable for letting out blood but not qi. Needling the Shaoyang channel is suitable for letting out qi but not blood. Needling the Taiyin channel is suitable for letting out qi but not blood. Needling the Shaoyin channel is suitable for letting out qi but not blood. Needling the Jueyin channel is suitable for letting out blood but not qi.

🧠 Deep Understanding

Core Principles 💡

• Blood-Qi Constants and Needling Choices: The different excess-deficiency tendencies of blood and qi in the three yin and three yang channels served as important guidance for the ancients in determining deficiency-excess supplementation and draining, as well as needling methods. For example, the Yangming channel has much qi and much blood, so both blood and qi can be let out; the Taiyang channel has much blood and little qi, so letting out blood is appropriate while letting out qi is avoided; the Shaoyin channel has little blood and much qi, so letting out qi is appropriate while letting out blood is avoided. This reflects an approach of "treating according to the channel" rather than applying a one-size-fits-all method.
• Interior-Exterior Pairing: The hand and foot three yin and three yang channels form six pairs of interior-exterior relationships, such as foot Taiyang with foot Shaoyin, hand Shaoyang with Heart Governor, etc., indicating that viscera, bowels, and channels are interconnected internally and externally. Paired channels influence each other physiologically and pathologically, and treatment can address the interior through the exterior or the exterior through the interior.
• First Dispel Stagnation, Then Regulate Deficiency-Excess: The principle of "first go to its blood, then go to its suffering" means first removing local stagnation or stagnant blood to alleviate distress, then supplementing or draining according to deficiency or excess. This bears the prototype of "treating the branch in acute cases and the root in chronic cases."
• Back-Shu Location Method: Measuring the distance between the nipples, halving it, and then using a triangular method to locate points on the back demonstrates the ancient use of body-surface landmarks and equal division for point location, representing early empirical experience in acupuncture point localization.
• Five Form-Will Classifications: From five dimensions—physical rest or labor, emotional suffering or joy, and the presence of fright—human states are classified into five categories, with disease locations respectively in the vessels, flesh, sinews, throat, and channels-collaterals, and treatments respectively as moxibustion/needling, stone needling, hot compression/daoyin, herbal medicine, and massage/medicinal wine. This embodies the holistic concept of "unity of form and spirit," emphasizing the close relationship between physical-mental states and disease occurrence.

Modern Perspectives 🌟

• Blood-Qi Constants Are a Theoretical Model: Terms such as "much qi and much blood" or "much blood and little qi" for channels do not correspond to modern anatomical or physiological concepts. They are closer to clinical empirical generalizations used to explain constitutional tendencies and guide needling choices. Modern research has not identified direct biological evidence corresponding to these constants.
• Interior-Exterior Pairing Has a Systems-Theory Flavor: Pairing interior-exterior channels can be understood as a functional association model established by the ancients, bearing some holistic value. From a modern medical standpoint, however, there is no evidence of independent "interior-exterior channel" pathways or specific structures.
• Bloodletting and Principles of Letting Blood/Qi Require Caution: Ancient practices such as bloodletting and letting out qi were empirical treatments of their time. Modern medicine has an extremely narrow scope for bloodletting, and unprofessional procedures carry risks of infection and injury. This text is intended solely for theoretical study and does not constitute any treatment recommendation.
• Back-Shu Location Method Is an Early Form of Surface Measurement: This equal-division method reflects ancient utilization of body-surface landmarks but has limited precision. Modern acupuncture point location has incorporated anatomical landmarks and standardized protocols, so there is no need to adhere rigidly to ancient rough methods.
• The Five Form-Will Types Anticipate Psychosomatic Medicine: The mutual influence of body and emotions resonates with contemporary concepts of stress-related illness and psychosomatic medicine. However, the classification is relatively coarse and cannot replace modern diagnosis or individualized assessment.

Health Insights ⚡

• Balance Labor and Rest: Excessive rest tends to cause stagnation of blood and qi and slackening of the flesh; excessive labor tends to harm the sinews and consume qi. Maintain moderate activity in daily life, avoid prolonged sitting or lying, and also avoid chronic overexertion.
• Regulate Emotions: Those whose bodies are at ease but who are weighed down by excessive rumination especially need to actively relieve emotional tension; frequent states of fright and tension can affect the smooth flow of channel qi and blood. Maintaining emotional stability and regular routines supports overall harmony.
• Individual Differences Should Be Viewed Rationally: The ancients held that each person's blood and qi tendencies differ, and daily nurturing need not be forced into uniformity. However, one should not self-diagnose as "much qi and much blood" or "much blood and little qi," nor should one attempt bloodletting, moxibustion, or self-prepared medicinal wine without professional guidance.
• Value Coordinated Body-Mind Care: The body and emotions are not isolated—when physical discomfort arises, pay attention to lifestyle and emotional state; conversely, when emotions are disturbed, be mindful of physical health. If noticeable discomfort appears, seek help from a qualified professional.

📚 Related Knowledge

• Related Concepts: Three yin and three yang, interior-exterior channels, Back-Shu points, unity of form and spirit, abundance and scarcity of blood and qi, needling principles, bloodletting therapy, moxibustion and needling, stone needles, hot compression, massage, medicinal wine.
• Further Reading: Lingshu, Chapter on Nine Needles contains similar records on the abundance and scarcity of channel blood and qi; Lingshu, Chapter on Back-Shu specifically discusses the back points; Suwen, Chapter on the Great Treatise of Yin-Yang Correspondences discusses the relationship between form and spirit and treatment principles.

⚠️ Note: This content is based on classical Chinese medical texts and is intended solely for traditional cultural study and research. It does not constitute any medical diagnosis, medication, or treatment advice. If you feel unwell, please consult a qualified physician in a timely manner.