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This syndrome generally is not due to excess heat stagnation in the intestines and stomach, but rather extreme dryness and depletion of Lung Yin (Lung Yin). It is appropriate to use Xuanbai Chengqi Tang (Chest White Purging Decoction) with added nourishing herbs; otherwise, use Wu Jutong's Zengye Chengqi Tang (Increase Fluids Purging Decoction). However, harsh purgatives must be avoided.

This syndrome may be caused by Spleen Heat, as described in the *Neijing* (Inner Canon): "Heat struggle leads to abdominal fullness and diarrhea." The aforementioned methods for correcting misdiagnosis can be used. Alternatively, it may be due to severe Liver Wind stirring internally, requiring heavy use of Yijia Jian (One Shell Decoction).

This is actually a critical condition of collapse and exhaustion, mostly incurable. However, occasionally there are cases where phlegm and Qi are congested and knotted, preventing Qi from descending. Fresh Radish Juice (Xian Laifu Zhi) can be used, or Zhang's Xiaodu Wan (Detoxification Pill) may be employed to attempt a remote possibility of success.

This is a necessary manifestation during the critical collapse stage of Diphtheria (Baihou). This indicates that treatment must focus heavily on the Hand-Taiyin Lung Meridian. If there is congestion of Phlegm-Fire, Da Xinliang (Great Acrid-Cool) formula with added Niuhuang (Calculus Bovis, Bezoar) etc. can be used. Or, due to mismanagement causing excessive Lung Fire, condensing fluids into phlegm, even Niuhuang may appear too bitter and drying. In such cases, large doses of Sweet, Salty, and Cold herbs must be used. One must not casually use Acrid-Drying herbs just because phlegm is present.

This syndrome often results from the spread of Fire-Toxin or overuse of drastic purgatives. Nevertheless, many cases have been effective. My eldest daughter suffered from these syndromes mentioned above; she took three doses of a large dose of Sanjianglong Dan (Three-Subduing Dragon Pill) combined with Yijia Jian and recovered. One must not declare this syndrome incurable simply upon seeing it.

This syndrome often arises when Fire-Toxin sinks into the Foot-Taiyin Spleen Meridian, as described in the *Neijing*: "Spleen Heat disease presents with heavy head, swollen cheeks, and bluish complexion." It may also occur when Liver Fire is extremely excessive, revealing its true color.

This is truly an extremely severe condition, mostly incurable. If it is due to congestion of phlegm and Qi, Xiaodu Wan (Detoxification Pill) can be used directly to hope for a remote possibility of success.

This is a syndrome of dried-up Lung Yin with internal heat, suitable for treating with Fire-Purging and Yin-Nourishing methods. My eldest daughter experienced this similarly; due to the misuse of Xilei San (Tin Category Powder) blown into the throat, her voice became hoarse immediately. Later, all other symptoms completely resolved, and only after more than half a month did she feel gradually clear and bright. When encountering this syndrome, herbs like Bird's Nest (Yanwo) and Donkey-Hide Gelatin (Ejiao) should be incorporated.

Having clarified the differentiation of symptoms for Diphtheria (Baihou), the primary emphasis is on medication. Naixiu's listed tables of Primary Generals, Fierce Generals, Secondary Generals, and four layers of medications, along with dietary and medicinal taboos, are chosen quite appropriately and concisely. However, the selection of herbs is limited, which inevitably restricts the perspective of later practitioners, and the discussions are largely not grounded in classics, making it difficult to guide students. Here, I take his intent and analyze it in detail.

Naixiu states: "The method of treatment lies only in using heavy and dense medicines to suppress the upper layer, and cooling medicines to moisten the lower layer." These two sentences alone reveal a major error. Generally, when physicians prescribe medicine, diseases in the Upper Jiao (Upper Burner) require light and clear herbs, while diseases in the Lower Jiao (Lower Burner) require heavy and turbid herbs. Therefore, dosages for the Upper Jiao should be light and suited for dispersion; dosages for the Lower Jiao should be heavy and suited for pills. Upper Jiao medicines should be lightly decocted and taken frequently; Lower Jiao medicines should be strongly decocted and taken in one dose. How can there be a principle of using heavy/dense medicines to suppress the upper layer and cooling/moistening medicines to lubricate the lower layer? Any person involved in medicine knows this clearly without needing to extensively study books. Among the upper-layer medicines he collected, such as Dongdi (Ophiopogonis Radix, Maidong) is essential for nourishing Yin; Shigao (Gypsum Fibrosum, Gypsum) is specifically for clearing dry fire; Danshen (though text says Danscao/Danshen context implies Longdan Cao Gentianae Radix, here interpreted as Gentianae Radix for Shaoyang) is for draining excess fire of the Foot-Shaoyang Gallbladder Meridian; Chuanbai (Phellodendri Cortex, Huangbai) is for draining excess fire of the Hand-Shaoyin Heart Meridian; Xijiao (Rhinocerotis Cornu, Rhinoceros Horn - note: modern substitutes used) is the specialized herb for clearing deficient fire of the Hand-Shaoyin Heart Meridian. These secretly match the pathology, but they are not "suppressing" as he claims. If considered suppression, then Fen Ge (Puerariae Lobatae Radix, Kudzu Root) in the secondary-general layer greatly raises Stomach Yang and moves Stomach Yin, which is the most contraindicated item for Diphtheria; how can this be called suppression? In the second-layer medicines, such as Loubei (Fritillariae Bulbus et Trichosanthis Fructus), Mudanpi (Moutan Cortex), Banlangen (Isatidis Radix), Sangye (Mori Folium), Pipaye (Loquat Leaf), Zhizi (Gardeniae Fructus), Mutong (Akebiae Caulis), etc., are key herbs for unblocking meridians to treat both root and branch of this syndrome; they are not "moistening" as he claims. If considered moistening, then Loupi (Trichosanthis Pericarpium), Mutong, Zhizi, and Doulou (Stemonae Radix) are bitter and assist dryness; how can this be called moistening? The Zhiqiao (Aurantii Fructus), Houpo (Magnoliae Officinalis Cortex), Shenqu (Medicated Leaven), Sharen (Ziziphi Spinosae Semen processed or Hawthorn fruit context implies Shanrou Crataegi Fructus), and Chenpi (Citri Reticulatae Pericarpium) in the middle and lower layers are either due to chronic damp-phlegm stagnation in the Spleen and Stomach, or due to sudden intake of cold/cloying medicines causing failure of Middle Qi transformation; thus they can be used, but this is not standard practice. Otherwise, Chaoya (Malto Fermented, Fried Malt) can also raise Fire potential; how can it be lightly administered? As for Xiaosh (Natrii Sulfas, Mirabilite) and Huanglian/Huangqin/Huangbo/Dahuang context implies Dahuang Rheum Radix et Rhizoma, here specifically Dahuang), they are even harder to use. They can only be considered if there is accumulated excess heat in the intestines and stomach, presenting the ancient signs of Pi (Glomus), Man (Fullness), Zao (Dryness), Shi (Solid), Jian (Hardness), and Tong (Pain). Only then can they be used cautiously. Never try them lightly. My opinion is that at the initial stage of this syndrome, or after mismanagement or transmission, one must clearly identify the disease source (whether Dry-Fire acts alone or Wind-Fire combines) and carefully differentiate the meridians (whether Hand-Taiyin acts alone or Shaoyang/Shaoyin combine). Prescribing according to the syndrome will naturally fit perfectly. One must not be vague or general, nor limit the perspectives of later generations with mere few words.