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The inability to urinate is termed "Bi" (Urinary Retention), while dribbling with pain is termed "Lin" (Dysuria/Strangury). Both conditions arise from the failure of communication between the Heart and Kidney, accumulation of heat-toxins, excessive sexual activity after drinking alcohol, consumption of overly dry and hot foods, or emotional stagnation; essentially, they belong to the same category. Since Yan Yonghe proposed the classification of "Five Lin Syndromes," Qi Lin presents with lower abdominal fullness and oppression, difficult urination, and frequent residual urine; Sha Lin (Gravel Strangury) presents with pain in the urethra and difficulty in sudden voiding; Gao Lin (Milky Strangury) presents with urine resembling fat or paste; Lao Lin (Fatigue Strangury) occurs upon fatigue and exertion, with pain radiating to the Qichong point; Xue Lin (Bloody Strangury) is triggered by heat, potentially progressing to hematuria, and if the nasal color is observed to be yellow, it indicates difficult urination. Later, Li Dongyuan argued that the Lung is the upper source for generating fluids, and the Kidney is the primordial qi governing body fluids. If Lin syndrome is accompanied by thirst, fever, and a rapid pulse, it indicates that the Lung has been affected by Liver-heat, losing its function of descending water, which constitutes a Qi-level syndrome; this should be treated with light, clear, and diuretic herbs to clear heat. If there is no fever or thirst, it belongs to the Blood level, and should be treated with nourishing yin and rich/flavorful herbs to assist the Kidney. In my opinion, Yan’s perspective discusses the primary disease of the Kidney and Bladder. Li’s differentiation, however, addresses concurrent syndromes. Why? Because his discussion includes symptoms of Lung heat, Lung wheezing and coughing, Spleen distension and fullness, strangury, retention, watery diarrhea, and scanty difficult urination—all indicating that other diseases cause Lin syndrome, not primarily the Kidney and Bladder. Thus, we know that Lin and Bi syndromes are primarily governed by the Heart and Kidney, but actually involve the Spleen and Lung. Zhu Danxi further stated that the Bladder, as a Fu organ, has an upper opening but no lower opening; it requires ascending and rising qi to execute the command of percolation and excretion, so that when qi transforms, urine can be expelled. If blood and qi become turbid, or if righteous qi is deficient and sinking, stagnation leads to Lin syndrome, similar to a dripping vessel: if the upper orifice is blocked, the lower orifice cannot flow. It is appropriate to add herbs such as Chai Hu (Bupleuri Radix) and Sheng Ma (Cimicifugae Rhizoma) to lift the qi. If middle qi is weak and unable to transform clear and turbid substances, leading to Lin, adding qi-tonifying herbs is appropriate. If blood deficiency prevents qi from ascending, since qi attaches to blood, blood deficiency implies qi deficiency, and the draining/excretory function fails; thus, tonifying blood and adding lifting herbs is suitable. If excessive alcohol and food intake lead to damp-phlegm accumulation in the chest and diaphragm, with a wiry-slippery pulse and symptoms of stuffiness and oppression, Er Chen Tang (Two-Cured Decoction) added with Xiang Fu (Cyperi Rhizoma) and Mu Xiang (Aucklandiae Radix) for induced vomiting, followed by Zhi Zi (Gardeniae Fructus) and Mu Tong (Akebiae Caulis) for regulation, is also one method. I reason according to the principles of nature: yang cannot transform without yin, and yin cannot move without yang; non-ascending prevents descending, and non-descending prevents ascending. Therefore, emesis is a method of ascending; percolation and diuresis are methods of descending. Herbs for promoting diuresis and clearing heat belong to the qi category of the yang aspect; herbs for purging fire and nourishing yin belong to the blood category of the yin aspect. One may use ascending and descending methods together, or combine qi and blood treatments. However, for blood-level diseases, one must not solely apply percolating and draining methods, lest they consume essence and fluids, causing deficiency and increased dryness; instead, use lung-channel herbs sparingly to guide the mutual generation between mother and child organs. For qi-level diseases, one must not use purely cold and heavy herbs, lest they stagnate transformation and generation, worsening stagnation and causing Lin; instead, use pungent and moistening qi-moving herbs sparingly to allow qi transformation and subsequent excretion. Modern practitioners, seeing the use of warm herbs, suspect that Lin syndrome has a cold pattern, unaware that this is a treatment method following the nature of qi stagnation. Additionally, there are cases of Lin complicated by cold, where chills precede urination; this occurs because cold pathogen contends with righteous qi: if the pathogen is strong, chills manifest as Lin; if righteous qi is strong, chills resolve and urination becomes smooth. Excessive sweating can lead to red, astringent urine resembling Lin due to internal dryness of the five zang organs; in such cases, diuretic agents must be avoided. There are also cases of difficult urination with itching but no pain in the urethra, caused by intestinal parasites, which is not Lin syndrome. Trauma from falls or blows, or excessive use of warm, drying, and astringent herbs, can cause blood stasis and turbidity; women with amenorrhea and blood accumulation forming masses (Jia) can also develop Lin and Bi, presenting with lower abdominal fullness and pain, or tenderness to touch; these require blood-breaking herbs such as Hong Hua (Carthami Flos) and Tao Ren (Persicae Semen). Furthermore, difficult labor damaged by midwives injuring the uterus can cause continuous dribbling of urine; this condition lacks pain and astringency, merely dripping unconsciously or with sensation but no pain, and requires substantial tonification of qi and blood. If both stool and urine are retained, accompanied by upper vomiting, it is known in the world as "Guan Ge" (Obstruction and Reversal), which is extremely difficult to treat. The Classics state: "Death will occur before the expected time."