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The Bladder is the official of the "Zhou Du" (a metaphor for the reservoir of fluids), where body fluids are stored; only through Qi transformation can they be excreted. What is meant by Qi transformation? Body fluids are transformed by Qi. (Impaired urination results from the failure of Qi transformation. The Classic states that the Bladder is the mansion of body fluids, and when Qi transforms, excretion occurs.) The *Treatise on Differences in Meridians* says: When drink enters the stomach, its essence floats and overflows, moving upward to the Spleen. The Spleen scatters the essence, sending it upward to return to the Lung. The Lung regulates and directs the water passages, transmitting them downward to the Bladder. Water essence distributes throughout the four directions, and the five meridians proceed together. This is like steaming food: the steam from the broth rises to熏 (smoke/steam) the cauldron and steamer, causing liquid to drip down. Similarly, the Spleen's steaming action warms the Lung leaves, thereby regulating the water passages and transmitting fluids to the Bladder. Therefore, regarding the symptom of impaired urination, if it is examined to be due to deficiency leading to fluid depletion, using diuretics will worsen it; one must use major tonification. Using Ren Shen (Ginseng Root) with a small amount of Sheng Ma (Cimicifugae Rhizome), decocted and drunk, causes Yang to rise and Yin to descend, just as earthy qi rises to form clouds and heavenly qi descends to form rain. Naturally, flow becomes smooth. Danxi once treated a patient with Shang Han (Cold Damage). After sweating and fever subsiding, the pulse remained洪 (Surging). (After sweating in Shang Han, the pulse must be Surging but weak.) Treating this Surging pulse as a sign of deficiency, he administered Ren Shen (Ginseng Root), Huang Qin (Scutellariae Radix), Bai Zhu (Atractylodis Macrocephalae Rhizoma), Zhi Gan Cao (Prepared Licorice Root), Dang Gui (Angelicae Sinensis Radix), Shao Yao (Paeoniae Radix), and Chen Pi (Citri Reticulatae Pericarpium). After several days, the pulse remained large, and impaired urination occurred, with distension and stuffiness below the lower abdomen, causing significant distress. Only when lying supine could urine drip out. Daily administration of tonic herbs was ineffective. He doubled the dosage of Huang Qin (Scutellariae Radix) and Ren Shen (Ginseng Root) in the previous prescription and administered it in a large dose. After two days, urination finally became free. For cases caused by strenuous sexual activity or forcibly holding urine, Xiao Tusizi Wan (Small Cuscuta Pill) or Liuwei Wan (Six-Ingredient Pill) should be used; taking them frequently yields results. For heat in the Lower Jiao, Fengsui Dan (Phoenix Marrow Pill) or Zishen Wan (Kidney-Nourishing Pill) are appropriate. Yang Renzhai said: Generally, when water passages do not flow, the root lies in the Kidney, and the branch in the Lung. Using Qian Niu Zi (Pharbitidis Semen) and Ze Xie (Alismatis Rhizoma) allows urine to flow naturally. However, this does not apply to frail or elderly people. Wang Haizang said: Deficiency constipation in the elderly is due to the loss of body fluids in the Lower Jiao. Using Sheng Ma Tang (Cimicifuga Decoction) lifts the Qi. As Yang rises and Yin descends, like earthy qi forming clouds and heavenly qi forming rain, flow is facilitated. He also stated: Impaired urination is not due to disorders of the Small Intestine, Bladder, or Jueyin Meridian, but rather the fault of strenuous sexual activity and forcibly holding urine. A man suffered from impaired urination. Other doctors treated him with diuretics, which worsened his condition. Danxi diagnosed a slightly wiry and slippery pulse at the Right Cun position, stating: This is accumulated phlegm. Accumulated phlegm resides in the vessels; the vessels belong to the Upper Jiao, while the Bladder belongs to the Lower Jiao. If the Upper Jiao is blocked, the Lower Jiao is obstructed. It is like a vessel for dripping water; the upper aperture must be open for water to exit from the lower aperture. Thus, he induced vomiting. After vomiting, the illness disappeared as if lost. The Classic states: The Bladder is the mansion of body fluids; when Qi transforms, excretion occurs. It also states: The Lung regulates and directs the water passages, draining downward into the Bladder. The *Mai Jue* (Pulse Secrets) states: The Liver and Gallbladder both relate to the mansion of body fluids; therefore, the Taiyang and Jueyin meridians are treated together. It also states: The Bladder and Kidney combine to form the mansion of essence. This explains why the Kidney governs difficulties in both large and small bowel movements. The key focus lies in the phrases "Lung Qi regulates and directs" and "water essence distributes throughout."