Why do the Chinese call the Meridians "Inner Landscape Tunnels"? The Body's Highway Network, Not Just Blood Vessels

Part 1A Question

Have you ever had this experience?

Your shoulder is stiff and painful. The acupuncturist inserts a needle at the Zusanli point on your leg, and you wonder: "My shoulder hurts, why are you needling my leg?" But after a few minutes, your shoulder loosens up. TCM says: "This is the distant therapeutic effect of the meridians."

Someone feels nauseous and wants to vomit. A friend presses the Neiguan point on the wrist, and after a few minutes, the nausea disappears. TCM says: "Neiguan connects to the stomach, the meridians are interconnected." You don't understand: the wrist and the stomach are so far apart, what is the relationship?

Someone has a cold and gets scraping (gua sha) on the back, producing purple-red marks. The next day, cold symptoms are significantly reduced. TCM says: "The meridians are unblocked, the evil qi is dispersed outward." You ask a Western doctor: "Where are the meridians?" The doctor says: "Cannot be found, there is no anatomical basis."

Someone has long-term insomnia, takes sleeping pills, can sleep but wakes up more tired. After three months of TCM treatment, they can sleep without medication. TCM says: "Harmonize the meridians, qi and blood flow smoothly." You don't understand: meridians are invisible and intangible, how can they be "adjusted"?

You ask a Western doctor: "What exactly are the meridians doing?" The doctor says: "It is a TCM concept with no anatomical correspondence."

You ask a TCM doctor: "What exactly are the meridians doing?" The elder doctor says: "The meridians connect the internal organs to the limbs."

Even more remarkably, the ancients had no microscopes, no X-rays, no CT scans, yet they accurately described the body's network system using "inner landscape tunnels." Twelve regular meridians, eight extraordinary meridians, fifteen collateral meridians — this network covers the entire body, connecting organs and limbs. Without microscopes, how did they discover it?

Part 2Traditional Chinese Explanation

The concept of "meridians" in the Huangdi Neijing is defined as "inner landscape tunnels" — inner landscape, meaning the internal scenery of the body; tunnels, meaning the channels through which qi and blood move. But the ancients observed very directly: needling a certain point can relieve distant symptoms; pressing a certain point can improve the corresponding organ; emotional suppression causes stiffness in certain body parts. They discovered that there is an invisible network inside the body, connecting all organs and limbs.

TCM divides the meridians into two levels:

Twelve Regular Meridians — like twelve highways. Each regular meridian connects one internal organ and one corresponding limb area. Hand Taiyin Lung Meridian, Hand Yangming Large Intestine Meridian, Foot Yangming Stomach Meridian... The twelve regular meridians are symmetrically distributed, covering the entire body. Qi and blood flow in the regular meridians, like traffic flowing on highways. When a regular meridian is blocked, the corresponding organ and limb will have problems.

Eight Extraordinary Meridians — like eight national roads. The extraordinary meridians do not directly connect to organs but regulate the distribution of qi and blood in the twelve regular meridians. Ren Meridian, Du Meridian, Chong Meridian, Dai Meridian... like the national traffic control center, responsible for adjusting the traffic flow on each highway. Among them, the Du Meridian is the "sea of yang meridians," governing the yang qi of the whole body; the Ren Meridian is the "sea of yin meridians," governing the yin qi of the whole body. When the Ren and Du Meridians are unblocked, the qi and blood of the whole body flow smoothly.

The meridians have three core functions in TCM theory:

Transporting qi and blood — The meridians are channels for the movement of qi and blood. Qi is the body's energy; blood is the body's nutrition. Qi and blood are transported through the meridians to the whole body, nourishing organs, bones, tendons, and skin. When the meridians are blocked, qi and blood cannot reach where they should go, leading to "pain where blocked, no pain where unblocked."

Connecting organs and limbs — The meridians connect the internal organs and the limbs. Problems in the internal organs will be reflected on the corresponding meridians (such as tenderness, nodules, discoloration). Conversely, stimulating points on the meridians can regulate the corresponding organs. This is "connecting the internal organs to the limbs" — the inside and outside of the body are connected into one through the meridians.

Conducting information — The meridians are the body's information cables. The body's perception, reaction, and regulation are all transmitted through the meridians. Needling a point sends signals through the meridians to distant organs; emotional changes affect organ function through the meridians. The meridians are not only transport channels but also information highways.

So, the ancient "meridians" are not blood vessels (blood vessels are pipes, qi and blood are functions), not nerves (nerves conduct electrical signals, meridians conduct qi and blood), but an independent network system — connecting, transporting, and conducting. The ancients used "inner landscape tunnels" to describe it, meaning: you cannot see it, but you can feel its effects.

Part 3Giaogiao Modern Translation

Alright, now let's translate "meridians" into modern language.

I'm not going to talk about the fascial network, nerve-vascular-lymphatic complexes, or intercellular signal transmission. Too complex. You only need to remember one metaphor:

That simple. Your "meridians" are essentially the body's transport, connection, and information network — responsible for transporting qi and blood, connecting organs, and conducting information.

Specifically:

What do the meridians correspond to? The meridians are not a single anatomical structure but a comprehensive functional manifestation of the fascial network, neurovascular bundles, lymphatic channels, and intercellular fluid networks. Modern research has found that the pathways of the meridians highly coincide with the distribution of fascia (connective tissue); acupoints are often dense convergence points of nerves, blood vessels, and lymphatics. The meridians are not an organ but a cross-system functional network.

What does "transporting qi and blood" correspond to? It corresponds to blood circulation, lymphatic circulation, and tissue fluid flow. Blood transports oxygen and nutrients, lymph transports immune cells and metabolic waste, and tissue fluid diffuses between cells. Together, they constitute the body's "transport system." But the "qi" of the meridians is not just blood and lymph but also includes bioelectricity, electromagnetic fields, and cellular signaling molecules and other broader forms of energy and information.

What does "conducting information" correspond to? It corresponds to the nervous system and endocrine system. Nerves conduct electrical signals; the endocrine system secretes hormones; together they regulate body functions. But the information conduction of the meridians is not just nerves and hormones but also includes fascial tension conduction, chemical signals in intercellular fluid, and electromagnetic field changes in tissues. Acupuncture stimulating acupoints can activate local nerves, blood vessels, lymphatics, and immune cells, producing a cascade reaction — this is the modern explanation of "meridian conduction."

So, "meridians" are not metaphysics. It is a functional metaphor — describing the body's transport, connection, and information network. The ancients used "inner landscape tunnels" to summarize it; modern people use "fascial network, neurovascular bundles, and bioelectromagnetic fields" to describe it — they are talking about the same thing. Only the ancients described it by function, while modern people break it down by structure. The functions are the same, only the names differ.

Part 4Life Cases

Four stories to instantly understand the meridians.

Case 1: Acupuncture treating shoulder pain.

Stiff and painful shoulder. The acupuncturist inserts a needle at the Zusanli point on the leg, and after a few minutes the shoulder loosens. You don't understand: my shoulder hurts, why needle my leg?

The truth: Zusanli is a point on the Foot Yangming Stomach Meridian, and the stomach meridian runs through the front of the shoulder. Needling Zusanli transmits signals through the stomach meridian, regulating local qi and blood circulation and muscle tension in the shoulder. Modern research shows that needling acupoints can activate local sensory nerves; signals travel through the spinal cord to the brain, which then releases endorphins and other analgesic substances, while adjusting distant muscle tension. It is not "magical remote control" but a nerve-humoral-network cascade reaction. But TCM's use of "meridian distant therapy" to describe this distant effect is precise.

Case 2: Neiguan point stopping vomiting.

Stomach discomfort, nausea and wanting to vomit. Pressing the Neiguan point on the wrist, after a few minutes the nausea disappears. You don't understand: what is the relationship between the wrist and the stomach?

The truth: Neiguan is a point on the Hand Jueyin Pericardium Meridian, located near the median nerve. Pressing Neiguan stimulates the median nerve, which through the vagus nerve reflex inhibits excessive stomach peristalsis and gastric acid secretion. At the same time, nerve signals regulate the vomiting center in the brain, reducing nausea. It is not "mysticism" but precise regulation of nerve reflexes. But TCM's use of "pericardium meridian connects to the stomach" to describe this connection is also functionally accurate.

Case 3: Back scraping treating a cold.

After a cold, back scraping produces purple-red marks. The next day, cold symptoms are reduced. TCM says "the meridians are unblocked, the evil qi is dispersed outward."

The truth: Scraping causes mechanical stimulation, leading to local capillary rupture and the release of inflammatory factors. These factors activate the immune system, enhance local blood flow and lymphatic return, and promote the excretion of metabolic waste. At the same time, scraping stimulates nerve endings on the back, regulating organ function through spinal reflexes. The scraping marks are an immune response triggered by local micro-injury, not "detoxification," but they do promote the body's self-repair. TCM's use of "evil qi dispersed outward" to describe this process, though the language differs, the effect is real.

Case 4: Long-term insomnia, meridian regulation works.

Long-term insomnia, takes sleeping pills but wakes up more tired. After three months of TCM meridian regulation, can sleep without medication. TCM says "harmonize the meridians, qi and blood flow smoothly."

The truth: Long-term insomnia is related to autonomic nervous system dysfunction, hypothalamic-pituitary-adrenal axis (HPA axis) imbalance, and neurotransmitter imbalance (such as GABA, 5-HT). TCM meridian regulation (acupuncture, massage, herbs) adjusts the nervous system, endocrine system, and immune system through multiple targets. Acupuncture can promote the release of endorphins and GABA, reduce cortisol levels, and improve sleep structure. It is not "mysterious power" but multi-system, multi-target comprehensive regulation. TCM's use of "harmonize the meridians" to summarize this whole-body regulation is also apt.

Four cases, one underlying logic: The meridians are not blood vessels or nerves but the body's network system. They connect organs and limbs, conduct information and energy, and regulate whole-body function.

Part 5Modern Research

Do "meridians" have scientific research?

Yes, and plenty. Scientists don't use the word "meridians," but they have discovered the same network:

• Fascial Network. In 2018, a study funded by the US National Institutes of Health (NIH) found that fascia (connective tissue wrapping muscles, organs, and blood vessels) forms a continuous network throughout the body. Fascia not only has a supporting role but can also conduct mechanical force, transmit cellular signals, and transport fluids. The pathways of the meridians highly coincide with the layers and connections of fascia. Scientists even found that the hyaluronic acid layer in fascia has conductivity, which may be the physical basis of "qi." The fascial network is the anatomical correspondence of the meridians.

• Low-Resistance Characteristics of Meridians. In the 1950s, Japanese researcher Yoshio Nakatani discovered that the skin resistance at meridian acupoints is 30%-50% lower than the surrounding area. These low-resistance points highly coincide with classical meridian diagrams. Subsequent studies with more precise instruments confirmed that there are changes in current and electromagnetic fields along the meridian pathways. This shows that meridians have physical measurability — they may be composite conductive pathways composed of fascia, blood vessels, and nerves.

• Functional Magnetic Resonance Imaging (fMRI) Studies. American scientists used fMRI to study acupuncture and found that needling different acupoints can activate different functional areas of the brain. For example, needling Zusanli activates brain areas related to gastrointestinal function; needling Hegu activates brain areas related to facial sensation. This shows that there is a neural network connection between acupoints, the brain, and organs — the information conduction function of the meridians has neuroscientific evidence.

These studies fully demonstrate that "meridians" are a system that can be gradually revealed in modern scientific language. The ancients used "inner landscape tunnels" to summarize it; modern people use "fascial network, low-resistance pathways, and neural connections" to describe it — they are talking about the same body network, just from different observation angles.

Part 6Practical Methods

Having understood the "meridians," how do we unblock them?

First, dispel a few misconceptions:

• Meridians are superstition, anatomy cannot find them. Anatomy indeed cannot find an independent "meridian," but the fascial network, neurovascular bundles, and low-resistance pathways are all measurable. The meridians are not a single line but a functional network — described by function, not defined by structure.

• Unblocking the meridians makes you immune to all diseases. Meridian regulation is an auxiliary means, not a panacea. Serious illnesses require comprehensive treatment; you cannot rely solely on "unblocking meridians." When meridians are unblocked, qi and blood flow well, but it does not guarantee you won't get sick.

Specific methods:

• Moderate exercise to unblock the meridians. Exercise is the best way to unblock the meridians. Tai Chi, Baduanjin, and yoga stretch fascia, stimulate acupoints, and promote blood circulation through slow, stretching movements. Brisk walking, swimming, and cycling also enhance the flow of qi and blood throughout the body. Exercise is the cheapest medicine for "unblocking meridians" — no tools needed, just move.

• Massage acupoints for local regulation. Learn a few commonly used acupoints: Hegu (pain relief), Zusanli (qi supplementation), Neiguan (anti-nausea/calming), Taichong (liver soothing). Press each point for 5-10 minutes daily, with moderate pressure, until a sore and swollen feeling is felt. Acupoints are "interfaces" on the meridians — pressing is activating the interface, mobilizing the corresponding function. We will talk about acupoints in detail later.

• Moxibustion for warming and unblocking. Moxibustion promotes local blood circulation and warms the meridians through warm stimulation. Suitable for cold-damp constitution (cold hands and feet, fear of cold, joint pain). Commonly used acupoints: Guanyuan, Qihai, Zusanli, Mingmen. Each moxibustion session lasts 15-20 minutes; be careful with temperature to avoid burns. Warmth unblocks, coldness congeals — warmth is the meridians' good friend.

• Avoid prolonged sitting to prevent meridian blockage. Prolonged sitting is the killer of the meridians. Maintaining one posture for a long time causes fascia adhesion, qi and blood stagnation, and muscle stiffness. Get up and move for 5-10 minutes every hour, stretch your limbs, turn your neck, and twist your waist. Let qi and blood flow, and the meridians won't be blocked.

• Regulate emotions to unblock the liver meridian. Emotional suppression is an important cause of meridian blockage. The liver governs dredging; when emotions are not smooth, the liver meridian is blocked. Find an emotional outlet — exercise, talking, art, meditation. When emotions are smooth, the liver meridian is unblocked; when the liver meridian is unblocked, the qi of the whole body flows smoothly. Emotions are the best "meridian unblocking agent."

These methods do not require you to believe in TCM. You only need to understand: The meridians are the body's highway network — they need exercise to unblock, acupoints to regulate, warmth to maintain, activity to prevent blockage, and emotions to keep flowing.

Part 7One-Minute Summary