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Fugu Ju (Deep-seated bone abscess) may arise from exposure to cold and wind due to sleeping outdoors, where pathogenic factors deeply invade the bones; it may result from damage to physical constitution and vital qi, preventing the expulsion of pathogens; it may stem from the excessive use of purgative or attacking agents, which deplete yuan qi (original qi), hindering the emergence of toxins; or it may be caused by the external application of cold-natured medicines, leading to blood coagulation internally. In all such cases, moxibustion and warming therapy should be applied to the affected area to dissipate toxic heat, supplement and reconnect yang qi, with a primary focus on warming and tonifying the spleen and stomach. If the patient's diet remains normal, Xianfang Huoming Yin (Immortality Elixir Decoction) should be used first to resolve toxicity and disperse stagnation, followed by Liujunzi Tang (Six Gentlemen Decoction) to tonify and support ying qi (nutritive qi). If the body feels fatigued and appetite is reduced, only the aforementioned decoction (Liujunzi Tang) should be used to nourish the zang organs, ensuring that righteous qi prevails over pathogenic factors. If pus has already formed, immediate needle drainage is required to prevent internal invasion of toxins. Needle puncture even through intact skin is permissible; if fire needles are used, pain is minimized, and wound healing is facilitated. Garlic-separated moxibustion can resolve toxicity and promote qi circulation, while scallion-warming therapy can assist yang qi in resolving stagnation. Although these methods are not recorded in standard medical formularies, I frequently employ them with great efficacy. Their full merits cannot be exhaustively described, except that they are contraindicated for patients with severe deficiency and collapse of qi and blood.

Clinical Cases:
Wang Jingshan, a Southern Sima (Military Officer), presented with leg swelling and pain, alternating chills and fever, thirst, normal diet, and a surging, rapid, and forceful pulse. This was diagnosed as damp-heat stagnation in the three yang meridians of the foot. An external application was used, followed by two doses of Xianfang Huoming Yin (Immortality Elixir Decoction), which alleviated the pain. Subsequently, Bazhen Tang (Eight Treasures Decoction) was administered with added Chaihu (Bupleurum Root), Shanzhi (Gardenia Fruit), and Danpi (Moutan Cortex), resulting in the cessation of pain. Later, due to overwork, he experienced fatigue, anorexia, heavy legs, and dizziness, indicating spleen-stomach qi deficiency failing to raise clear yang. Bu Zhong Yi Qi Tang (Tonify the Middle and Augment the Qi Decoction) with added Manjingzi (Vitex Fruit) stabilized the condition.

A scholar presented with slight swelling of the left leg, unchanged muscle color, and reduced appetite/mental desire. This indicated deficiency of true qi with internal invasion of dampness. Since all qi is derived from the stomach, the treatment principle should be to tonify... [Text incomplete].

Another scholar presented with swelling and pain in both legs, unchanged muscle color, aversion to cold, fever, reduced appetite, limb fatigue, insufficient spleen qi, and downward pouring of damp-phlegm. Two doses of Bu Zhong Yi Qi Tang (Tonify the Middle and Augment the Qi Decoction) with added Fuling (Poria), Banxia (Pinellia Rhizome), and Shaoyao (Peony Root) resolved the chills, fever, swelling, and pain. After more than ten additional doses, the spleen and stomach strengthened, and the physique became robust.

A man contracted this disease after sexual intercourse, resulting in hard swelling of both arms and obstruction of urination and defecation. I stated: The kidneys open into the two yin orifices; this indicates liver-kidney deficiency. Liuwei Wan (Six-Ingredient Pill with Rehmannia) formula with Cheqianzi (Plantago Seed) and Niuxi (Achyranthes Root) restored normal excretion. Bu Zhong Yi Qi Tang (Tonify the Middle and Augment the Qi Decoction) resolved the hardness and swelling. Fortunately, his youth contributed to his survival.

A Shangshe (Imperial Academy Student) suffered from internal pain like a cone piercing, unchanged muscle color, sallow complexion, anorexia, severe pain causing vomiting, indicating pain damaging stomach qi. Liujunzi Tang (Six Gentlemen Decoction) was used to strengthen the spleen and stomach... [Text incomplete].

A man carried heavy loads and had irregular diet, causing chest pain, which was mistakenly identified as carbuncle toxin. He took Dahuang (Rhubarb Rhizome) and other purgatives, resulting in right thigh swelling with unchanged muscle color, headache, aversion to cold, panting, thirst, fever, and a surging but forceless pulse. This resulted from labor injuring yuan qi (original qi) and medications damaging stomach qi. Four doses of Bu Zhong Yi Qi Tang (Tonify the Middle and Augment the Qi Decoction) were given, followed by several doses of Shiquan Dabu Tang (Ten Complete Tonifying Decoction). Fortunately, his youth led to recovery.