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Answer: Taking the medicine when it is not indicated constitutes violating the root of the disease. This leads to excessive urination and severe depletion of body fluids (Jin-Ye). When Yang is invaded to the extreme, it invades Yin, resulting in blood disorders (Xue Zheng). For mild cases, Tao Ren Cheng Qi Tang (Peach Kernel Decoction to Order the Qi) is used; for severe cases, Di Dang Tang (Wait-Until-It-Goes Decoction) is used. Therefore, Wu Ling San (Five-Ingredient Powder with Poria) is a formula that harmonizes Yin and Yang. It lies between Taiyang disease (Disease of the Taiyang Channel) and Yangming disease (Disease of the Yangming Channel), thus serving as a harmonizing agent.

If heat is located in the Middle Jiao (Middle Burner) and has not yet entered the root of the Taiyang channel (the Bladder), urination will be free and clear, indicating that body fluids are circulating normally. If Wu Ling San is administered at this time to promote diuresis, it causes further depletion of Kidney water (Shen Shui). Not only does this deplete Kidney water further, but the heat from alcohol toxicity also cannot be eliminated. Consequently, the upper and lower pathways become obstructed, urinary difficulty occurs, leading to jaundice (Huang). If the pathogen enters the Blood Chamber (Xue Shi), it results in Blood Accumulation (Xu Xue).

Assuming it is a Taiyang condition, where cold damage (Shang Han) enters from the exterior, there are two theories regarding Root (Ben) and Branch (Biao). From the perspective of the host's righteous Qi, the Bladder is the Root, and the channels and collaterals are the Branch. From the perspective of the pathogen, what is acquired first is the Root, and what is acquired later is the Branch. Here, the exterior is affected first, constituting the Root; subsequently, the pathogen enters the Bladder, making the Bladder the Branch. This refers to the Root and Branch of an exogenous pathogen. Treatment should follow the Root and Branch of the exogenous pathogen.

The Small Intestine has Fire as its Root.
The Bladder has Water as its Root.
Cold-toxic qi enters from the Branch to the Root. The pathogen combines with the Hand Channels and descends to the Bladder, which is primarily treated by Wu Ling San. Gui Zhi (Cinnamon Twig) is Yang within Yang, and Fu Ling (Poria) is Yin within Yang. They guide each other downward, entering the Root pathway to expel the pathogenic qi.
Hand Channels descend from above to below; Foot Channels ascend from below to above. Bing Fire corresponds to the Small Intestine; Ren Water corresponds to the Bladder.

Fire-pathogenic qi ascends from below to above, with the interior as the Root. There is fire within water. Since fire acts as a guest pathogen, one must again investigate its Root. The two Kidneys are connected, and the issue pertains to the Lower Jiao (Lower Burner). The Lower Jiao is like a drainage ditch, where Ministerial Fire (Xiang Huo) is bright. This condition is treated with Sheng Di Huang (Rehmanniae Radix Preparata) and Huang Bo (Phellodendri Cortex). The pathogen originates from the Root; fire pathogenic qi from the Lower Jiao lingers in the Small Intestine, meaning heat is in the Lower Jiao, causing obstruction and difficulty, with the pathology moving from the interior to the exterior.

Gui Zhi (Cinnamon Twig), Bai Zhu (Atractylodis Macrocephalae Rhizoma), Ze Xie (Alismatis Rhizoma), and Fu Ling (Poria) belong to Yin within Yang.
Sheng Di Huang (Rehmanniae Radix Preparata), Huang Bo (Phellodendri Cortex), and Huang Lian (Coptidis Rhizoma) belong to Yang within Yin.

For treating alcohol-related diseases, inducing sweating is appropriate. If diuresis is used, the flaming fire will not descend. Hence, it is said that "when fire is constrained, it should be dispersed." Using acrid-warm herbs to disperse aligns with the nature of fire. This approach is closest to the pathology, allowing both dampness and heat to be eliminated. Treatment employs acrid-warm herbs to disperse fire, assisted by bitter-cold herbs to remove dampness.