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The root of the nose, also written as "Xin", refers to the nasal bridge, commonly known as the nose ridge. It is the intersection point of the Foot-Yangming Stomach Meridian and the Du Vessel (Governing Vessel). (*Suwen* states: When heat from the Gallbladder transfers to the Brain, it causes a pungent sensation in the nose and *Bi Yuan* (Nasal Sinusitis with profuse discharge), which may progress to *Nu* (Epistaxis) and closed eyes. Annotation: The meridian of the Foot-Taiyang Bladder starts at the inner canthus of the eye, ascends to the forehead, intersects at the vertex, and connects with the brain. The meridian of the Foot-Yangming Stomach originates beside the nose, intersects at the nasal root, and runs alongside the Foot-Taiyang meridian. Currently, heat in the brain causes counterflow of the Foot-Taiyang meridian, which becomes hyperactive along with the Foot-Yangming meridian, pressing upon the nasal root, thus causing a pungent and painful sensation in the nose. This pungency is called "Xin". *Bi Yuan* refers to the continuous flow of turbid nasal discharge like a spring. Excessive heat causes overflow of the Yang collaterals; overflow of Yang collaterals leads to epistaxis. Epistaxis refers to bleeding from the nose, also called "Nie". If bleeding is severe, the Qi of the Foot-Yangming and Foot-Taiyang meridians declines, failing to nourish the eyes, resulting in blurred vision or closed eyes. "Ming" means dimness.) The nose belongs to the Hand-Taiyin Lung Meridian. (*Suwen* states: The color white corresponds to the West and internally connects with the Lung, opening into the nose, and fears heat. *Ling Shu* states: In Lung disease, there is panting and flaring of the nostrils. It also states: When Lung Qi is deficient, there is nasal congestion and obstruction; when harmonious, one can distinguish odors. Qiao Yue states: When Lung Qi is exhausted, there is no nasal discharge, and the nostrils are black and dry; if Liver Qi rebels and overacts on it, the complexion turns green. Li Dongyuan states: In wind-cold injury, the breath exhaled through the nose is coarse, and the mouth remains closed because Lung Qi communicates with Heaven.) The nose also belongs to the Hand-Shaoyin Heart Meridian. (Li Dongyuan states: Although the nose is primarily governed by the Lung, its ability to smell aromas is due to the presence of the Heart within the nose, where Geng Metal [Lung] is born from Ji Earth [Spleen/Stomach, implying the generative cycle]; *Suwen* states: The five qi enter through the nose and are stored in the Heart and Lungs. When the Heart and Lungs have pathology, the nose becomes obstructed.) The nose is also the intersection of the Hand-Yangming Large Intestine Meridian, Foot-Yangming Stomach Meridian, and the Du Vessel. (Liu Hejian states: Nasal congestion caused by wind-cold invading the interstices occurs because cold causes contraction and impedes the smooth flow of Yang Qi. *Suwen* states: On the second day of cold damage, the Yangming meridian receives the pathogen. Yangming governs the flesh, and its meridian runs alongside the nose, hence the nose becomes dry and sleep is disturbed. Wang Haicang states: Shi Gao (Gypsum Fibrosum) is acrid and cold, induces sweating, and enters the Hand-Taiyin Lung Meridian. Why does Zhang Zhongjing use it for Yangming meridian patterns in cold damage? Because the Stomach meridian runs along the anterior aspect of the body, and the chest is the chamber of the Stomach and Lung. When pathogenic heat resides in the Yangming, the Lung is constrained by fire; therefore, acrid-cold herbs are used to clear Lung heat, hence this formula is named Baihu Tang (White Tiger Decoction). *Suwen* further states: In the theory of Six Qi, the arrival of Yangming results in *Qiu* (runny nose) and *Ti* (sneezing). Annotation: *Qiu* refers to nasal obstruction; *Ti* refers to sneezing.) In the facial area of children, the nose is referred to as "Mingtang" (Bright Hall). (*Ling Shu* states: Pulse manifestations appear at the Qi Kou (Radial Artery), and complexions manifest at Mingtang. Mingtang is the nose. A large and broad Mingtang indicates longevity; a small one indicates danger, especially if accompanied by disease. ○ Note: This statement aligns with physiognomy principles that value a high nasal bridge. However, one must observe the entire face. I have seen individuals with a small Mingtang whose features were proportionate, who lived to eighty years old. One cannot adhere rigidly to a single criterion.) The nose belongs to the Foot-Taiyin Spleen Meridian. (*Suwen* states: In Spleen Heat Disease, the nose reddens first.) Half a cun lateral to the nostril margins (named Yingxiang LI20), it is the intersection of the Hand-Yangming Large Intestine Meridian and Foot-Yangming Stomach Meridian, directly below the pupils (named Juliao ST3), and is the intersection of the Foot-Yangming Stomach Meridian and the Yin Qiao Vessel. If the rest of the body is healthy but the tip of the nose appears blue-yellow, the person likely suffers from Lin Syndrome (Strangury). If the tip of the nose is slightly white, it indicates loss of blood. If red, it indicates Blood Heat. If yellow, it indicates difficulty in urination.