虚火者，饥饱劳役，正气受伤，阳陷入阴，发热神疲，饮食减少。东垣于此等证，用补中益
气汤，以升、柴升举阳气，又为之补脾和胃，此正有得于《内经》虚者温其气之旨，故甘温能除大
热，开治阳虚一大法门。无如世之学东垣者，不辨阴阳虚实，虽阴虚发热及上实下虚者，动辄升、
柴，祸不旋踵矣。因自制和中养胃汤，以明宗东垣者当师其意云。
和中养胃汤（自制）
黄 （二钱） 人参（一钱） 茯苓（二钱） 白术（一钱） 甘草（四分）
当归（二钱） 料豆（四钱） 柴胡（一钱） 薄荷（一钱） 广陈皮（一钱）
砂仁（一钱） 苡仁（四钱） 枣（二枚） 姜（三片）
此方即补中益气汤，去升麻加薄荷以代之，有逍遥散之意。再加茯苓以和脾，料豆以安肾，砂
仁、苡仁以和中化湿，升中有降，不犯下焦，用东垣意而不执其法，制方煞费苦心。祖怡注。
燥火者，血虚之所致也。血能养气则气不妄动，而阴阳得其平。营血一亏，则内失所养，而脏
腑皆燥，火亦随生，令人毛发衰脱，肌肤枯槁，身热咽干，雪乳汤主之。
雪乳汤（自制）
生地（三钱） 当归（一钱五分） 白芍（一钱） 麦冬（一钱五分） 熟地（三钱）
五味子（五分） 天冬（一钱五分） 玉竹（四钱） 山药（三钱） 人乳（一大杯）
藕汁（一大杯） 水二钟煎服。
血不养气，气不化津，脏腑皆燥，土焦水涸，二地、二冬、玉竹、山药、当归、白芍，所以养
血壮水者至矣。而方名以雪乳，用人乳、藕汁，润至极矣，而更以五味之酸收以敛之，是合固本、
生脉于一方，于肺燥肺火外，又别出手眼也，神乎技矣。祖怡注。
Deficient fire arises from irregular eating habits, overwork, and fatigue, which injure the righteous qi (vital energy). Yang qi sinks into the Yin, resulting in fever, mental fatigue, and reduced appetite. Dongyuan Li treated such syndromes with Buzhong Yiqi Tang (Tonify the Middle and Augment the Qi Decoction), using Shengma (Rhizoma Cimicifugae) and Chaihu (Radix Bupleuri) to raise and lift the Yang qi, while simultaneously tonifying the Spleen and harmonizing the Stomach. This precisely aligns with the principle in *Neijing* (The Yellow Emperor's Classic of Internal Medicine) that "deficiency is warmed by its qi." Thus, sweet-warm herbs can eliminate great heat, opening a major method for treating Yang deficiency. Unfortunately, those in the world who study Dongyuan's theories fail to distinguish between Yin/Yang and deficiency/excess. Even in cases of Yin deficiency with fever or upper excess and lower deficiency, they indiscriminately use Shengma and Chaihu, bringing disaster upon themselves swiftly. Therefore, I formulated Hezhong Yangwei Tang (Harmonize the Middle and Nourish the Stomach Decoction) to clarify that those who revere Dongyuan should learn his intent rather than merely imitating his methods.
Hezhong Yangwei Tang (Self-formulated)
Huangqi (Astragali Radix, 2 qian)
Renshen (Ginseng Radix, 1 qian)
Fuling (Poria, 2 qian)
Baizhu (Atractylodis Macrocephalae Rhizoma, 1 qian)
Gancao (Glycyrrhizae Radix et Rhizoma, 4 fen)
Danggui (Angelicae Sinensis Radix, 2 qian)
Daodou (Phaseoli Semen, 4 qian)
Chaihu (Bupleuri Radix, 1 qian)
Bohe (Menthae Haplocalycis Herba, 1 qian)
Guangchenpi (Citri Reticulatae Pericarpium, 1 qian)
Sharen (Amomi Fructus Rotundus, 1 qian)
Yiren (Coicis Semen, 4 qian)
Zao (Jujubae Fructus, 2 pieces)
Jiang (Zingiberis Rhizoma Recens, 3 slices)
This formula is essentially Buzhong Yiqi Tang (Tonify the Middle and Augment the Qi Decoction), with Shengma removed and replaced by Bohe, incorporating the concept of Xiaoyao San (Free and Easy Wanderer Powder). Fuling is added to harmonize the Spleen, Daodou to calm the Kidney, and Sharen and Yiren to harmonize the Middle Jiao and transform dampness. It raises while descending, avoiding the Lower Jiao; it employs Dongyuan's intent without being bound by his specific methods, showing considerable ingenuity in formulation. (Annotated by Zuyi)
Dry fire is caused by blood deficiency. Blood nourishes Qi, preventing Qi from moving recklessly, thereby maintaining Yin-Yang balance. Once Ying-Blood (Nutritive Blood) is deficient, internal nourishment is lost, leading to dryness in all Zang-Fu organs, and fire arises accordingly. This causes hair loss, withered skin, body heat, and dry throat. Xueru Tang (Snow Milk Decoction) is the primary treatment.
Xueru Tang (Snow Milk Decoction, Self-formulated)
Shengdi (Rehmanniae Radix Recens, 3 qian)
Danggui (Angelicae Sinensis Radix, 1.5 qian)
Baishao (Paeoniae Radix Alba, 1 qian)
Maidong (Ophiopogonis Radix, 1.5 qian)
Shudi (Rehmanniae Radix Preparata, 3 qian)
Wuweizi (Schisandrae Chinensis Fructus, 0.5 qian)
Tian dong (Asparagi Radix, 1.5 qian)
Yuzhu (Polygonati Odorati Rhizoma, 4 qian)
Shanyao (Dioscoreae Rhizoma, 3 qian)
Renru (Human Milk, one large cup)
Ou zhi (Nelumbinis Nelumbo Rhizoma Juice, one large cup)
Decoct with two zhong of water and take orally.
When blood fails to nourish Qi, Qi cannot transform fluids, leading to dryness in all Zang-Fu organs, scorched Earth, and dried-up Water. Shengdi, Shudi, Tian dong, Maidong, Yuzhu, Shanyao, Danggui, and Baishao are excellent for nourishing blood and strengthening Water. The formula is named Snow Milk because it uses human milk and lotus root juice, providing extreme moistening. Furthermore, the astringent property of Wuweizi is used to consolidate and gather. This combines Gu Ben Tang (Solidify the Root Decoction) and Sheng Mai San (Generate the Pulse Powder) into one formula. Beyond addressing Lung dryness and Lung fire, it demonstrates unique insight and divine skill. (Annotated by Zuyi)