治前证服药后，外感之火已消，而渴与泻仍未全愈。或因服开破之药伤其气分，致滑泻不止。其人或兼
喘逆，或兼咳嗽，或自汗，或心中怔忡者，皆宜急服此汤。
生山药（两半） 怀熟地（两半） 野台参（八钱） 滑石（五钱） 生杭芍（五钱） 甘草（二钱）
酸石榴（一个，连皮捣烂）
上药七味，用水五盅，先煎酸石榴十余沸，去滓再入诸药，煎汤两盅，分二次温饮下。若无酸石榴，可
用牡蛎（ 研）一两代之。汗多者，加山萸肉（去净核）六钱。
寒温诸证，最忌误用破气之药。若心下或胸胁疼痛，加乳香、没药、楝子、丹参诸药，腹疼者加芍药，皆
可止疼。若因表不解，束其郁热作疼者，解表清热，其疼自止。若误服槟榔、青皮、郁金、枳壳诸破气之品，
损其胸中大气，则风寒乘虚内陷，变成结胸者多矣。即使传经已深，而肠胃未至大实，可降下者，则开破与寒
凉并用，亦易使大便滑泻，致变证百出。愚屡见此等医者误人，心甚恻怛。故与服破气药而结胸者，制荡胸汤
以救其误。服破气药而滑泻者，制此汤以救其误。究之，误之轻者可救，误之重者实难挽回于垂危之际也。
治胸中素蕴实热，又受外感。内热为外感所束，不能发泄。
时觉烦躁，或喘、或胸胁疼，其脉洪滑而长者。
连翘（一两） 生石膏（六钱，捣细） 蝉蜕（二钱，去足土） 牛蒡子（二钱，炒捣）
喘者，倍牛蒡子。胸中疼者加丹参、没药各三钱。胁下疼者，加柴胡、川楝子各三钱。
此方所主之证，即《伤寒论》大青龙汤所主之证也。然大青龙汤宜于伤寒，此则宜于温病。至伤寒之病，
其胸中烦躁过甚者，亦可用之以代大青龙，故曰犹龙也。
一妇，年三十余。胸疼连胁，心中发热。服开胸、理气、清火之药不效。后愚诊视，其脉浮洪而长。知其
上焦先有郁热，又为风寒所束，则风寒与郁热相搏而作疼也。治以此汤，加没药、川楝子各四钱，一剂得汗而愈。
一叟，年过七旬。素有劳病。因冬令伤寒，劳病复发，喘而且咳，两三日间，痰涎壅盛，上焦烦热。诊其
脉，洪长浮数。投以此汤，加玄参、潞参各四钱，一剂汗出而愈。
门人刘××，曾治一人，年四十。外感痰喘甚剧。四五日间，脉象洪滑，舌苔白而微黄。刘××投以此汤，
方中石膏用一两，连翘用三钱。一剂周身得汗，外感之热已退，而喘未全愈。再诊其脉，平和如常，微嫌无力。
遂用拙拟从龙汤，去苏子，加潞参三钱，一剂全愈。愚闻之喜曰∶外感痰喘，小青龙汤所主之证也。拙拟犹龙
汤，原以代大青龙汤，今并可代小青龙汤，此愚之不及料也。将方中药味轻重，略为加减，即能另建奇功，以
斯知方之运用在人，慧心者自能变通也。
按∶连翘原非发汗之药，即诸家本草，亦未有谓其能发汗者。惟其人蕴有内热，用至一两必然出汗，且其
发汗之力缓而长。为其力之缓也，不至为汪洋之大汗，为其力之长也，晚睡时服之，可使通夜微觉解肌。且能
舒肝气之郁，泻肺气之实，若但目为疮家要药，犹未识连翘者也。用连翘发汗，必色青者方有
力。盖此物嫩则青，老则黄。凡物之嫩者，多具生发之气，故凡发汗所用之连翘，必须青连翘。
To treat the aforementioned condition, after taking the medicine, the external pathogenic fire has dissipated, yet thirst and diarrhea remain unresolved. This may be due to the damage of the Qi aspect (the functional activities of the body) caused by the ingestion of Qi-breaking medicines (herbs that break up stagnation and consume Qi), resulting in unceasing slippery diarrhea (involuntary loose stools). If the patient additionally presents with panting and rebellious Qi, or cough, or spontaneous sweating, or palpitations, this decoction should be administered urgently.
Raw Dioscoreae Rhizoma (Shanyao) [75g]
Prepared Rehmanniae Radix (Shudi) [75g]
Wild Taishen Ginseng (Taishen) [24g]
Talcum (Huashi) [15g]
Raw Paeoniae Radix Alba (Baishao) [15g]
Licorice Root (Gancao) [6g]
Pomegranate (Suan Shiliu) [1 whole, crushed with peel]
The above seven ingredients are boiled in 1000ml of water. First, boil the pomegranate for about ten boiling cycles, remove the dregs, then add the remaining herbs. Decoct until 400ml remains, divide into two doses, and take warm. If pomegranate is unavailable, Oyster Shell (Muli) [30g, powdered] can be used as a substitute. For excessive sweating, add Cornus Fruit (Shanzhuyu) [18g, pits removed].
In various conditions of Cold-Warm diseases (a general term for exogenous febrile diseases), it is most taboo to mistakenly use Qi-breaking medicines. If there is pain in the epigastrium or chest and hypochondrium, adding Frankincense (Ruxiang), Myrrh (Moyao), Fructus Toosendan (Chuanlianzi), and Salvia Miltiorrhiza Radix et Rhizoma (Danshen) can stop the pain; for abdominal pain, adding Paeoniae Radix Alba (Baishao) is effective. If the pain is caused by the exterior not being resolved, trapping stagnant heat, resolving the exterior and clearing heat will naturally stop the pain. However, if one mistakenly ingests Qi-breaking items such as Areca Seed (Binglang), Green Tangerine Peel (Qingpi), Curcuma Longa Rhizoma (Yujin), and Aurantii Fructus Immaturus (Zhiqiao), damaging the Great Qi (Zongqi) in the chest, wind-cold will sink inward through the deficiency, often transforming into Chest Binding (Jie Xiong, accumulation of phlegm-fluids in the chest/diaphragm). Even if the disease has transmitted deeply through the meridians, and the intestines and stomach have not reached a state of severe excess where purgatives are indicated, using Qi-breaking medicines together with cold-cooling medicines can easily cause slippery diarrhea, leading to myriad complications. I have frequently witnessed such physicians harming patients, feeling deep compassion. Therefore, for those who developed Chest Binding after taking Qi-breaking medicines, I formulated Dangxiong Tang (Chest-Sweeping Decoction) to remedy the error. For those who developed slippery diarrhea after taking Qi-breaking medicines, I formulated this decoction to remedy the error. Ultimately, mild errors can be remedied, but severe errors at a critical juncture are truly difficult to reverse.
To treat a condition where solid heat is originally accumulated in the chest, compounded by an external contraction. The internal heat is constrained by the external pathogen and cannot vent.
The patient occasionally feels irritability, or experiences panting, or chest/hypochondriac pain, with a pulse that is surging (Hong), slippery (Hua), and long (Chang).
Forsythiae Fructum (Lianqiao) [30g]
Raw Gypsum Fibrosum (Shi Gao) [18g, crushed]
Cicada Slough (Chantui) [6g, feet and soil removed]
Arctii Fructum (Niubangzi) [6g, stir-fried and crushed]
For panting, double the dosage of Arctii Fructum (Niubangzi). For chest pain, add Salvia Miltiorrhiza Radix et Rhizoma (Danshen) and Myrrh (Moyao), each 9g. For hypochondriac pain, add Bupleuri Radix (Chaihu) and Fructus Toosendan (Chuanlianzi), each 9g.
The condition primarily treated by this formula corresponds to the condition treated by Da Qing Long Tang (Major Blue Dragon Decoction) in the *Shanghan Lun* (Treatise on Cold Damage). However, Da Qing Long Tang is suitable for Shanghan (Cold Damage), whereas this formula is suitable for Wenbing (Warm Diseases). In cases of Shanghan where chest irritability is extremely severe, this formula can also be used to replace Da Qing Long Tang; hence the name "Youlong" (Resembling the Dragon).
A woman, over thirty years old, suffered from chest pain radiating to the hypochondrium and heat in the heart. Medicines for opening the chest, regulating Qi, and clearing fire were ineffective. Upon my examination, her pulse was floating, surging, and long. I determined that she had pre-existing stagnant heat in the Upper Jiao (Upper Burner), which was constrained by wind-cold, causing the wind-cold and stagnant heat to contend and produce pain. She was treated with this decoction, added with Myrrh (Moyao) and Fructus Toosendan (Chuanlianzi), each 12g. After one dose, she sweated and recovered.
An elderly man, over seventy years old, suffered from a chronic consumptive disease. Due to contracting cold in winter, his consumptive disease relapsed, presenting with panting and cough. Within two to three days, phlegm-saliva became abundant, and there was烦热 (irritability and heat) in the Upper Jiao. His pulse was surging, long, floating, and rapid. He was administered this decoction, added with Scrophulariae Radix (Xuanshen) and Codonopsis Radix (Lushen), each 12g. After one dose, he sweated and recovered.
My student Liu XX once treated a forty-year-old male with severe phlegm-panting due to external contraction. After four to five days, his pulse was surging and slippery, and his tongue coating was white with slight yellow. Liu XX prescribed this decoction, using 30g of Raw Gypsum (Shi Gao) and 9g of Forsythiae Fructum (Lianqiao). After one dose, he sweated profusely, the external heat subsided, but the panting was not fully resolved. Re-examining the pulse, it was peaceful and normal, though slightly weak. Subsequently, I used Conglong Tang (Following Dragon Decoction), removing Perillae Fructum (Suzi) and adding Codonopsis Radix (Lushen) 12g. After one dose, full recovery was achieved. Hearing this, I rejoiced and said: Phlegm-panting due to external contraction is the indication for Xiao Qing Long Tang (Minor Blue Dragon Decoction). My Youlong Tang was originally intended to replace Da Qing Long Tang, but now it can also replace Xiao Qing Long Tang. This was beyond my initial expectation. By slightly adjusting the heaviness and lightness of the herbal ingredients, remarkable efficacy can be achieved anew. This demonstrates that the application of formulas depends on the practitioner; those with wisdom can adapt flexibly.
Note: Forsythiae Fructum (Lianqiao) is inherently not a diaphoretic (sweat-inducing) herb, nor do various materia medica texts claim it induces sweating. Only when the person harbors internal heat does a dosage of 30g inevitably induce sweating, and its diaphoretic power is gentle yet prolonged. Because its power is gentle, it avoids profuse sweating; because its power is prolonged, taking it before sleep allows for a mild muscle-relieving effect throughout the night. Furthermore, it soothes Liver Qi stagnation and drains Lung Qi excess. To view it merely as an essential herb for sores and ulcers is to fail to truly understand Forsythiae Fructum. When using Forsythiae Fructum to induce sweating, green specimens must be used for potency. This herb is green when tender and yellow when mature. Generally, tender plants possess vigorous ascending and dispersing Qi; therefore, Forsythiae Fructum used for inducing sweating must be green Forsythiae Fructum.