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Chapter 45 of 81
黄帝内经·灵枢
Overall Paraphrase
This chapter is "Lingshu·Wai Chuai, Chapter 45" (the original "Wai Rui" is a textual error for "Wai Chuai"). The Yellow Emperor said: I have heard that the Nine Needles 🩺 (nine types of acupuncture needles and their corresponding theory) comprise nine chapters. I personally received the methods of regulation and have grasped their general meaning. The principles of the Nine Needles begin with "One" and end with "Nine," yet I have not seized their most fundamental essence. The principles of the Nine Needles—when spoken of in the small, are so small as to have no interior; when spoken of in the great, are so great as to have no exterior; too deep to fathom their bottom, too high to reach their summit; vague and profound, inexhaustible and endless, scattering and overflowing without bound. I know they accord with the patterns of Heaven, human affairs, and the changes of the four seasons. Yet I wish to bind these most subtle and intricate principles—as numerous as fine hairs—into a single unifying thread. Is this possible?
Qi Bo said: How clearly you have asked! This is not only true of the Way of Acupuncture—it is also how one governs a state. The Yellow Emperor said: What I wish to hear is the Way of Acupuncture, not matters of state. Qi Bo said: The governance of a state merely follows the "Way" as well; if there is no Way, how could the multifarious things—large and small, deep and shallow—be unified into one whole? The Yellow Emperor said: I wish to hear your complete explanation. Qi Bo said: This may be compared to the sun and moon, water and mirrors, and the drum with its sound.
The sun and moon shine brightly and do not fail to cast their shadows; the clarity of water and mirrors does not fail to reflect external forms; the drum responds to the striking and never lags behind the sound; at the slightest stirring there is a response, and thereby the truth of the matter is fully grasped. 🪞🥁
The Yellow Emperor said: How profound! This evident and manifest pattern cannot be concealed. The reason it cannot be concealed is that it does not deviate from Yin-Yang ☯️ (the two fundamental opposing yet complementary aspects of all things). Observe comprehensively, verify by palpation; seeing the external image, one understands the internal condition—just as clear water and bright mirrors never fail to reflect the forms before them. If the Five Tones are not manifest, the Five Colors are not lustrous, and the qi of the Five Viscera (liver, heart, spleen, lungs, kidneys) is disturbed, then internal and external will affect one another in succession—like a drum responding to its mallet, an echo answering a sound, or a shadow resembling its form. Thus, from the distant, one can infer internal changes from external phenomena; from the near, one can infer external manifestations from the internal state. This is the ultimate expression of the principle of Yin-Yang, the great framework of Heaven and Earth. I ask that it be treasured in the Hall of the Divine Orchid (the ancient imperial chamber for preserving precious texts), and never be carelessly divulged.
The central idea of this chapter is the holistic diagnostic approach of "judging the internal by observing the external, and inferring the external from the internal." Although the Nine Needles are divided into nine chapters with myriad variations, ultimately they can be "bound into one"—returning to the Way of Yin-Yang. The human body's interior and exterior correspond to one another: external manifestations such as sound, complexion, and form can reflect the state of the internal viscera and qi-blood; conversely, internal changes will inevitably be revealed externally. Therefore, the physician need not view large and small, deep and shallow, internal and external as separate, but should infer internal changes through external signs. This is the foundational thinking behind the Chinese medical principle that "what exists within is necessarily manifested without," and it embodies the scholarly pursuit of "mastering complexity through simplicity."
The approach of "inferring the internal from the external" resembles the "black box" method in modern cybernetics: rather than directly opening the interior, one infers internal states from external information. In Chinese medicine, observing the complexion, listening to the voice, inquiring about symptoms, and palpating the pulse all serve to establish a mapping between "internal" and "external." Modern medicine also often uses the skin, voice, body temperature, and facial appearance for preliminary health assessments, as certain systemic diseases do leave clues on the body's surface. However, it must be recognized that the traditional method of inferring the internal from the external relies on experience and holistic observation. It is suitable for grasping functional and trend-related issues but cannot replace modern imaging, laboratory tests, and other precise examinations—especially for diagnosing specific organic pathologies. This historical limitation should be viewed rationally.
— Bugu Reminder: This content is based on classical Chinese medical texts and is provided solely for traditional cultural study and research. It does not constitute any medical diagnosis, medication, or treatment advice. Please seek timely professional medical care if you are unwell.