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Although Jing (Essence) is stored in the Kidney, it is actually governed by the Heart. What the Heart stores is Shen (Spirit); when Shen is tranquil, Qi (Vital Energy) is stable. Qi is the mother of Water; when Qi is stable, Water becomes clear, and Jing naturally remains sealed. If Shen is restless, Jing will follow the chaotic movement of Qi and flow out with the water. Moreover, the Heart governs Blood. When Heart Blood is deficient, pathogenic Fire will surge upward, disturbing the spiritual residence of Shen, leading to mental confusion and erratic will, causing Tian Jing (Heavenly Essence) to tremble, frequent erotic dreams, and subsequent leakage of Jing. In severe cases, leakage occurs even without dreams. At this stage, if one attempts to treat it by subduing Fire but the Fire cannot be subdued, or directly employs astringent herbs like Long Gu (Fossilized Bones) and Mu Li (Oyster Shell), it results in temporary cessation followed by immediate recurrence. It is unknown that if Shen does not return to its residence, Jing cannot return to its origin. Therefore, when treating Kidney disease, one should treat the Heart, prioritizing nourishing Qi and calming Shen, and using moistening and blood-nourishing agents first. Once the Ministerial Fire (Jun Huo) is tranquil, the Executor Fire (Xiang Huo) will naturally obey, Shen will be clear and refreshing, and how could Jing fail to be secured?

The Jing in the human body is dissolved throughout the body, like the resin in trees, originally having no fixed form. Only due to emotional agitation does it take various forms and exit. The substances expelled are all transformations of Jing; excessive expulsion can injure Jing. Compared with those suffering from spermatorrhea, the differences lie only in the depth of the pathogenic influence, the thickness or thinness of the substance, and the severity of the injury.

This is Spermatorrhea and Impotence. It initially arises from immoderation in alcohol and sexual activity, leading to daily depletion of Jing and Blood, decline of both Water and Fire, Liver Wind, Spleen Dampness, and Cold generated by Kidney Deficiency. These three pathogenic factors disrupt the vital energy, causing bones and sinews to deteriorate daily. The treatment method should involve clearing Qi and calming Shen to nourish Heart and Spleen Blood; moistening dryness and nourishing Blood to restore Kidney and Liver Yin.

Bai Zhuo (White Turbidity) and Bai Yin (White Leukorrhea/Discharge) are named according to the duration of the disease. Initially, there is pain in the urethra, and the discharge is thick and turbid like paste, called Bai Zhuo. If it persists for a long time, the Jing becomes weak and thin, pain subsides, and it is called Bai Yin, indicating Fire deficiency and prevailing Cold. This is caused by the Yuan Qi (Original Qi) of the Kidney descending rather than ascending, resulting in sticky and greasy discharge, unclear sensation at the Ma Kou (Urethral Orifice), and continuous leakage. The treatment method should involve restoring Yang Qi to promote ascent and securing Jing Yuan to prevent sinking, after which the disease will cease. Additionally, some symptoms do not belong to deficiency but to Damp-Heat pouring downward, which should be treated according to the methods of Danxi (Zhu Zhenheng). Furthermore, leakage due to unfulfilled desires and constrained will, as well as leakage in Qi-deficient individuals due to loss of Jing and Qi, are not considered deficiency diseases.