[You Zaijing] This is excessive heat in the Lung and Stomach damaging the Body Fluids. Therefore, Baihu Tang (White Tiger Decoction) is used to clear heat, and Renshen (Ginseng Radix et Rhizoma) generates fluids and relieves thirst. This is likely what is referred to as the syndrome of Upper Xiao (Upper Wasting-Thirst) or Ge Xiao (Diaphragm Wasting-Thirst); it is suspected to be a misplaced text inserted here due to bamboo slip errors.
Yu Jiayan (Yu Chang), in *Yi Men Fa Lü* (Legal Principles of Medical Practice), states: According to this treatment for fire-heat injuring the Lung and Stomach, it is an excellent remedy for clearing heat and saving from thirst.
Therefore, for Xiao (Wasting-Thirst) located in the Upper Jiao (Upper Burner), this formula must be employed. Li Dongyuan used it to treat Ge Xiao (Diaphragm Wasting-Thirst), and Zhang Jiegau (Zhang Congzheng's student, often associated with Zhang Yuansu's lineage or specifically referring to Zhang Guojie/Zhang Yuansu depending on context, but here strictly translating name) used it to treat those who can eat yet feel thirsty.
When the pulse is floating, accompanied by fever, a desire to drink water, and dysuria (difficult or insufficient urination), Zhuling Tang (Polyporus Decoction) is the primary treatment.
[Shen Mingzong] This is not true Xiao (Wasting-Thirst). In Taiyang and Yangming diseases of Cold Damage, the pathogenic heat has not yet cleared; hence the floating pulse, fever, and desire to drink. When Stomach heat flows downward, it causes dysuria. Therefore, Zhuling Tang (Polyporus Decoction) is used to guide out heat, moisten dryness, and expel the Stomach pathogen downwards. Wenli San (Clam Shell Powder), Zhuling San (Polyporus Powder), and Wuling San (Five-Ingredient Powder with Poria), these four items were erroneously included by the compiler.
[You Zaijing] Regarding "desire to drink water," there are five cases in the original text. One case with floating pulse, fever, and dysuria uses Wuling San (Five-Ingredient Powder with Poria) because water and heat are bound together; one case uses Zhuling Tang (Polyporus Decoction) because water and...