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If a patient suffers from severe vomiting and finds it difficult to swallow medicine, it must be administered slowly, one spoonful at a time, and not too hastily. (*Medical Beginner*)

Medicines for tonifying the Lung should be taken in the early hours of Wugeng (around 3-5 AM), before speaking. This is because the Lung Qi opens during Wugeng; once speech or coughing/sputtering begins, the Lung Qi closes. Taking medicine in silence when the Lung Qi is open yields particularly potent effects. (*Ren Zhi Zhi Zhi*)

Whether a disease is cured depends not only on whether the prescription matches the syndrome, but even if the prescription is correct, improper administration methods can result in no efficacy and even harm. This is something that cannot be ignored. For example, with dispersing agents intended to drive out Wind-Cold, they must be taken hot, and the body covered warmly to allow the medicinal qi to circulate through Ying and Wei (Nutritive and Defensive levels), ensuring heat permeates the whole body, carrying the Wind-Cold out through sweating. If taken lukewarm, while sitting in drafts or standing, or lying quietly still, the medicine will remain in the stomach and intestines without inducing sweat; there is no mechanism for the Wind-Cold to dissipate secretly, and the Ying Qi may instead be damaged by the wind-dispersing drugs. Similarly, with purgative/diuretic agents intended to resolve stagnation and guide downward, they must be taken on an empty stomach in one dose to stimulate the medicinal properties, pushing turbid waste out via defecation. If mixed with food, old and new contents mix, medicinal qi interferes with food, the medicinal nature becomes unfocused, and food stagnation becomes more stubborn. Therefore, books like *Shanghan Lun* discuss various administration methods: some suitable for hot, warm, cool, or cold temperatures; some for slow or rapid intake; some for large or small doses; some for early or late timing; some after meals or on an empty stomach; and distinctions between decoctions vs. powders, powders vs. pills, pastes vs. pills. The principles of light/heavy, large/small, upper/lower, and exterior/interior are all profound. Deep contemplation of these meanings will surely yield insights. (Xu Lingtai)

Syndrome patterns such as Cold Damage, Summerheat Injury, Warm diseases, and Cool diseases all involve pathogenic factors bullying healthy Qi. Using medicine is like fighting an enemy: as medicine enters, pathogens gradually retreat; when medicinal power fades, pathogens flare up again. Within one shichen (two-hour period) after a dose, one must carefully observe the condition and palpate the pulse. If the medicine matches the syndrome, administer three to five doses continuously day and night, aiming primarily for the retreat of pathogens and stabilization of the illness. This method is recorded only in Zhang Changsha's *Shanghan Lun* and Sun Simiao's *Qianjin Fang*. Sun said: In summer, take three doses at Wugeng; in winter, take five doses at San Ye (midnight). Continue until the disease recedes. It is like driving away enemies: the more you drive them, the more elite they become; only after total pacification do you return. (Zhou Yuzai)

Medicine Guides (Yin)

A decoction without a guide is like a boat without an oar. Ancients used decoctions with guides. For instance, Zhang Zhongjing's Guizhi Tang uses 3 liang of Shengjiang (Fresh Ginger) and 12 pieces of Dazao (Jujube), equal parts to the main herbs, which effectively induces sweating. Conversely, Li Dongyuan's Buzhong Yiqi Tang also uses Ginger and Jujube but does not induce sweating. This is because the dosage of Ginger and Jujube is small and their strength is weak, so they do not cause profuse sweating. Inferring from these two prescriptions, the role of medicine guides cannot be overlooked. Ancient and modern decoctions are countless, and medicine guides are infinite; one must choose appropriately according to circumstances. For example: use Fresh Ginger for releasing the exterior; baked Ginger for warming the middle; Ginger peel for reducing distension; Ginger juice for resolving phlegm. Use Dazao (Jujube) to harmonize Ying and Wei; Hongzao (Red Jujube) to clear fire and disperse wind. Use Longyan Rou (Longan Flesh) to tonify Qi and benefit the Lung; Dengxincao (Juncus Effusus) to clear fire and calm the mind. Congye (Scallion Leaf) for superficial release; Congbai (Scallion White) for releasing the muscle layer; Congjing (Scallion Stem) for releasing both interior and exterior. Huling (Lake Lotus Rhizome) for strengthening the Spleen; Shilian (Punica Granatum Seed) for stopping dysentery. Sangye (Mulberry Leaf) for treating Wind; Sangzhi (Mulberry Twig) for treating Dampness. Lianrui (Lotus Plumule) for securing the Kidney; Lianxu (Lotus Stamen) for astringing essence. Chenzhugen (Old Ramie Root) for protecting the fetus; Xianzhugen (Fresh Ramie Root) for calming the fetus. Qingheyeh (Green Lotus Leaf) to suppress Spleen stagnation; Kuhegeng (Withered Lotus Stem) to unblock Earth. Xin Xiaomai (New Wheat) to tonify the Heart; Fuxiaomai (Floating Wheat) to stop sweating. Qingzhuye (Young Bamboo Leaf) to clear heat and relieve vexation; Danzhuye (Light Bamboo Leaf) to promote urination and drain fire. Chitang (Brown Sugar) to resolve stasis and unblock menses; Yitang (Maltose) to relieve pain and warm the middle. Chenbitu (Old Wall Soil) to stabilize the middle and benefit the Spleen; Xinhuangtu (Fresh Yellow Earth) to stop vomiting and harmonize the Stomach. Oujie (Lotus Node) to resolve stasis; Cebaiye (Platycladi Cacumen) to stop bleeding. Shidi (Persimmon Calyx) to stop hiccups; Shishuang (Persimmon Frost) to cool the Large Intestine. Zhuli (Bamboo Juice) to resolve hot phlegm; Zhuru (Bamboo Shavings) to drain excess fire. Tongbian (Child's Urine) to guide deficient fire downward; Qiushi (Mineral Salt) to nourish True Yin. Songhuang (Pine Pollen) and Songzhi (Pine Resin) for longevity and disease prevention; Huangsongjie (Yellow Pine Joint) for dispelling Wind and relaxing sinews. Bai Kuihua (White Sunflower Flower) for stabilizing asthma; Chi/Bai Biandouhua (Red/White Lablab Flower) for treating dysentery. Hutao (Walnut) and Shujiao (Sichuan Pepper) for strengthening Yang; Aye (Donkey-hide Gelatin) for warming the Uterus. Jingmi (Rice) for deficiency vexation; Lugeng (Reed Rhizome) for heat and thirst. Lanye (Orchid Leaf) for stopping polydipsia; Lizhi (Pear Juice) for settling cough. Jinmo (Gold Ink) for stopping bleeding; Chen Zong (Old Palm Fiber) for treating metrorrhagia. Shiliupi (Pomegranate Rind) for treating intestinal wind; Hongqu (Red Yeast Rice) for red dysentery. Weijiang (Baked Ginger) for white dysentery; Jiuzi (Allium Tuberosum Seed) and Baiguo (Ginkgo Nut) for red-and-white leukorrhea. Pipaye (Loquat Leaf) for stopping vomiting and coughing; Baimaohua (White Imperata Flower) for epistaxis. Baicaoshuang (Herb Ash) for moving stasis; Huayangnao (Hongyang Brain) for facilitating birth. Gouti (Momordica Charantia Fruit) for inducing vomiting; Nuya (likely referring to specific part of plant for labor induction) for rapid delivery. Chukang (Rice Husk Ash) for treating dysphagia; Qianmeng (Lead and Mercury compound - *Note: Toxic, historical context only*) for asthma. Tieshi (Iron Slag) for jaundice; Chensha (Cinnabar) for calming the Heart. Xionghuang (Realgar) for warding off evil; Songziren (Pine Kernel) for moistening the intestines. Lizi (Lychee Seed) and Juzhe (Tangerine Seed) for treating hernia; Sunjian (Bamboo Shoot Tip) and Yingtao'e (Cherry Calyx) for promoting lactation. Pugongying (Dandelion) for extracting toxins; Tongcao (Tetrapanax Papyriferus Stem) for unblocking milk. Zi Bei Fu Ping (Purple-backed Duckweed) for inducing measles. Jizihuang (Egg Yolk) for treating restlessness and insomnia. There are many types of medicine guides, impossible to list completely. Here are merely a few common ones. Infer the rest from these examples; only skilled practitioners can master this. (*Medical Ladder*)

Contemporary physicians often write "a few slices" for Shengjiang (Fresh Ginger), "a few roots" for Dengxincao (Juncus Effusus), "a few petals" for Zhuye (Bamboo Leaf) and Juye (Tangerine Leaf), and "a few inches" for Congguan (Scallion Tube) and Hegeng (Lotus Stem). I argue that slices vary in thickness, roots in length, petals in size, and inches in coarseness. All such vague measurements must be standardized by weight. (*Collected Discussions of Wu Physicians*)

The editing of this collection began in the 57th year of Qianlong and was completed in the 6th year of Daoguang. Redundancies were deleted, omissions filled, and the manuscript revised multiple times. It compiled over 320 ancient and modern medical texts, and over 40 classics, histories, and philosophical works. The collection records over 650 interpretations of canonical meanings, over 5,000 famous sayings of sages, selects 284 medical cases, attaches 191 formulas, includes 5 diagrams, 4 prefaces, 2 self-identifications, and 12 general rules. The book is divided into 16 volumes, comprising 130 categories and 570 classes. 28 people reviewed it, 23 proofread and recorded it, 2 engravers worked on it, the labor cost exceeded 600 taels of silver, and there were over 800 woodblocks. Carving began in the 8th month of the 10th year of Daoguang and was completed in the 3rd month of the 13th year. It totals 1,592 pages and 654,077 characters. Signed by Guanquan.