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This is Da Jian Zhong Tang (Greatly Building the Middle Decoction) added with Baizhu (Atractylodis Rhizoma), Baifuling (Poria Cum Ramo et Substrato), Shudi (Rehmanniae Radix Praeparata), Chuanxiong (Ligustici Chuanxiong Rhizoma), Maidong (Ophiopogonis Radix), and Roucongrong (Cynomorii Herba) (in equal parts).

Baizhu (Atractylodis Rhizoma), Fuzi (Aconiti Lateralis Radix Praeparata, processed), Chenpi (Citri Reticulatae Pericarpium), Cangzhu (Atractylodis Rhizoma, prepared), Houpo (Magnoliae Officinalis Cortex, prepared), Banxia (Pinelliae Tuber, soaked in decoction), Fuling (Poria Cum Ramo et Substrato, peeled), Zexie (Alismatis Rhizoma) (each 1 liang), Zhuling (Polyporus, peeled, 0.5 liang), Rougui (Cinnamomi Cortex, 4 qian). Each dose is 5 qian, boiled with one zhan of water and three slices of fresh ginger, until half a zhan remains. Take warm before meals, adjusting dosage according to the patient's deficiency or excess.

Huangqi (Astragali Membranacei Radix, 1 qian), Renshen (Ginseng Radix), Gancao (Licorice Root, honey-fried), Danggui (Angelicae Sinensis Radix), Baizhu (Atractylodis Rhizoma) (each 0.5 qian), Baishao (Paeoniae Radix Alba), Chaihu (Bupleuri Radix), Shengma (Cimicifugae Rhizoma) (each 3 fen), Jupi (Citri Reticulatae Pericarpium, 2 fen), Wuweizi (Schisandrae Chinensis Fructus) (15 berries). Boil with two zhong of water until one zhong remains, remove dregs, and take warm before meals.

Chaihu (Bupleuri Radix, 8 qian), Fangfeng (Saposhnikoviae Radix, 2.5 qian), Gegen (Puerariae Lobatae Radix), Shengma (Cimicifugae Rhizoma), Qianghuo (Notopterygii Rhizoma et Radix), Duhuo (Angelicae Pubescentis Radix), Renshen (Ginseng Radix), Baishao (Paeoniae Radix Alba) (each 5 qian), Shenggancao (Licorice Root, raw, 2 qian), Zhigancao (Licorice Root, honey-fried, 3 qian). Each dose is 5 qian, boiled with ginger and jujube.

Renshen (Ginseng Radix, 2 qian), Huangqi (Astragali Membranacei Radix, 3 qian), Zhigancao (Licorice Root, honey-fried, 1 qian). Boil with water and take.

(This is Siwu Tang (Four Substance Decoction) added with Danpi (Moutan Cortex) and Digupi (Lycii Cortex).)

Rougui (Cinnamomi Cortex), Gancao (Licorice Root), Shaoyao (Paeoniae Radix), Huangqi (Astragali Membranacei Radix), Danggui (Angelicae Sinensis Radix), Chuanxiong (Ligustici Chuanxiong Rhizoma), Renshen (Ginseng Radix), Baizhu (Atractylodis Rhizoma), Fuling (Poria Cum Ramo et Substrato), Shudihuang (Rehmanniae Radix Praeparata) (in equal parts). Make into coarse powder. Each dose is two large qian, boiled with one zhan of water, three slices of fresh ginger, and two jujubes, until seven-tenths remain. Take warm at any time.

Baishao (Paeoniae Radix Alba, 1.5 qian), Renshen (Ginseng Radix), Chenpi (Citri Reticulatae Pericarpium), Huangqi (Astragali Membranacei Radix, honey-fried), Guixin (Cinnamomi Cortex), Baizhu (Atractylodis Rhizoma), Danggui (Angelicae Sinensis Radix), Gancao (Licorice Root, honey-fried) (each 1 qian), Shudihuang (Rehmanniae Radix Praeparata), Wuweizi (Schisandrae Chinensis Fructus, stir-fried and pounded), Fuling (Poria Cum Ramo et Substrato) (each 0.75 qian), Yuanzhi (Polygalae Radix, 0.5 fen, heart removed). Add ginger and jujube, boil with water and take.

(This is the following formula added with Fuzi (Aconiti Lateralis Radix Praeparata) and Rougui (Cinnamomi Cortex).)
Rougui (Cinnamomi Cortex) and Fuzi (Aconiti Lateralis Radix Praeparata) can tonify all fire (Mingmen Fire). Guided by Liuwei Dihuang Wan (Six-Ingredient Pill with Rehmannia), they specifically tonify Mingmen Fire. Why? Because Fuzi (Aconiti Lateralis Radix Praeparata) circulates through all meridians, moving without staying; Rougui (Cinnamomi Cortex) also has a penetrating and dispersing nature. (When combined with yang-tonifying herbs, it induces sweating; when combined with blood-invigorating herbs, it warms and moves.) Both are difficult to control and must be guided by Liuwei Dihuang Wan (Six-Ingredient Pill with Rehmannia) to descend downward, avoiding the danger of hyperactivity rising upward. Nowadays, people do not understand this principle and often claim that Rougui (Cinnamomi Cortex) and Fuzi (Aconiti Lateralis Radix Praeparata) guide fire back to its source, using them alone without Liuwei Dihuang Wan (Six-Ingredient Pill with Rehmannia). This results in harshness damaging the middle and upper jiao, scorching and drying up the three yin meridians, causing great harm. (Mingmen fire should be slight, not strong; therefore, Rougui (Cinnamomi Cortex) and Fuzi (Aconiti Lateralis Radix Praeparata) are limited to one liang each. Slight fire generates qi, which is why the *Jinkui Yaolue* names this Shenqi Wan (Kidney Qi Pill).) Reducing the eight ingredients to six originated from Qian Yizhi’s treatment of children, because children have tender yang and pure qi, so Rougui (Cinnamomi Cortex) and Fuzi (Aconiti Lateralis Radix Praeparata) were removed. Xue Ji realized from this that for adults with yin deficiency and hyperactive fire, if Zhu Danxi’s method of nourishing yin fails, this formula works immediately. (Zhu Danxi used Siwu Tang (Four Substance Decoction) to nourish yin, which tonifies the acquired, tangible blood; this formula tonifies the congenital, intangible water. Therefore, for those with water deficiency, this formula is indispensable.) Since then, it has been widely praised as a divine formula for nourishing yin. *Yi Guan* further expanded its principles, applying them broadly to handle infinite variations. However, fundamentally, these are designed for severe depletion of the root. If the disease does not involve the kidney, it should certainly not be used. Nowadays, people fail to grasp the essence of *Yi Guan*, prescribing this indiscriminately for any disease, thereby delaying treatment and causing errors. Thus, Zhang Jieshi stated that *Yi Guan*’s use of Liuwei Dihuang Wan (Six-Ingredient Pill with Rehmannia) for treating Shanghan (Cold Damage) is like talking in one’s sleep, yet doctors and patients still consider it safe and mild, which is indeed laughable.