考上元县志∶戴天章，字麟郊，邑庠生；少师林青雷，习举子业，好学强记，所读经史，能通部逆背，
如瓶泻水；壮为文，干禄不足，于是求有用之学；自天官、地理、算数、射弋，以及书、画、琴、棋之类，
无不探微极要；尤精医理，博览深思，活人无算，谢之金、挥不受，四方淹雅名流至，必下榻请教。课诸子，
督以勤苦力学；晚号北山，学人称北山先生。长子瀚，字巨川；雍正元年，癸卯一甲第二人，覃恩，敕赠文
林郎、翰林院编修；乾隆辛卯，孙翼子官御史，再遇覃恩，赠如其官。乃孙谏议公祖启曰∶先大父北山先生，
以通儒邃医学，所论著伤寒、杂病诸书，及咳论注、疟论注、广瘟疫论，凡十数种；皆先世父雪村先生行楷细
字，录存于家。近坊中有瘟疫明辨四卷，祖启购阅之，即先大父存存书屋广瘟疫论也。虽易其名，未曾改窜其
文，不知何误刻为歙县郑某之书∶在先大父固不争此，子孙见之，不容不正。因出存存书屋原本，较而刻之，
以纠伪传、而广先德。观此二则，想见其为人，惜不得见其全书而卒读耳！
己酉春，南京濮凤笙君，邮寄广温热论抄本一册，嘱予校勘付印，余因诊务忙，任事多，日不暇给，暂置
高阁；嗣为濮君驰书屡促之，不获已，勉承其乏，将原书一一浏览，始知其书即戴氏广瘟疫论∶而陆氏九芝为
之删订，改定其名曰广温热论者也。见其论温热症甚精，论温热病中种种发现之症尤极明晰，洵当今最有实用
之书。
故陆氏九芝原序云∶北山此书，以温热与伤寒辩，条分缕晰，逐病疏明，伤寒之治，不混于温热；温热之
治，不混于伤
寒；诚于秦越人四曰热病、五曰温病之异于二曰伤寒者，分疆划界，不得飞越一步矣。然其书明是论温热，
而其书名则曰广瘟疫；篇中或称疫疠，或称时疫，或单称疫，一若自忘其为论温热者。是伤寒之与温热，北山
能辩之，而温热之与瘟疫，北山亦混之矣。余爱其论之精，而惜其名之误，乃于凡所称时行疫疠者，悉改之曰温
热，或曰伏邪。其开首云∶世之治伤寒者，每误以温热治之，治温热者，又误以伤寒治之。四语则余所缀也，
有此一提，而所以作书之意，乃先于卷端揭清∶即为之改题曰广温热论。则此书实足为温热病正法眼藏矣！其
言如此。
然余细玩原书，见其于湿温、燥热二症，言之甚略，尚少发明，即用药选方，亦多未尽善处，此非余一人
之偏见也。试述陆氏九芝原评曰∶此书明辨温热与伤寒，朗若列眉，实足为度世金针。而温热与瘟疫，仍混同
无别，因为之改正其文；命儿子润庠手录之，然屡次删改，而终不能惬意也。次述邴氏味清原评曰∶此书各论，
均有至理；即当在伤寒论中选方，乃见大家作用；惜多采后人夹杂之方，未免有悖经旨，且既知不可用辛温，
而总不出羌活汤、败毒散之范围；将经方辛凉之法弃而不用，先生殆亦趋时太甚耳。又次述李氏鹤访新评曰∶
此书未将风温、湿温、春温、冬温等厘清，而概称时行，未免含混∶至列大青龙九味羌活，沿古治温病之方，
则尤疏矣。夫温热病，热从内发，岂可用大青龙中麻、桂，猛发其汗耶？若九味羌活汤，皆一派辛燥雄烈，夹
入生地，引邪入阴，真杂而不精之方也。
合三说以观之，北山此书，虽经陆氏删定，而终不能惬心贵当者，九芝先生自认之。而列方之纯杂互收，
邴、李二家已发其蒙。故余不揣 昧，爰为悉心重订；将原书缺者补之，讹者
删之；更择古今历代名医之良方，而为余所历验不爽者，补入其间。务使后之阅者，知此书专为伏气温热而设，
非为新感温暑而言，辨症精、用药当，庶几与戴氏结撰之精心，陆氏删订之苦心，心心相印，永垂久远，而余
心始慊。呜呼！莫为之前，虽美不彰；莫为之后，虽盛不传。世之博雅君子，应亦谅我苦衷乎。
黄帝纪元四千六百九年十月望，何炳元廉臣识于越中之宣化坊。
查阅《上元县志》记载：戴天章，字麟郊，是县学的生员；年轻时师从林青雷，研习科举学业，勤奋好学且记忆力超群，所读经史书籍，能够通篇倒背如流，如同瓶中倒水般顺畅；成年后撰写文章，为了谋求功名尚且不足（指仅靠文章难以满足志向），于是转而追求实用的学问；从天文、地理、算术、射箭狩猎，以及书法、绘画、琴棋等技艺，无不探究其精微和要点；尤其精通医理，博览群书并深入思考，救治的人无数，拒绝接受酬金，四方博学高雅的名流来到，必定留宿请教。他教导子女，督促他们勤奋刻苦地学习；晚年自号北山，学者们称他为北山先生。长子戴瀚，字巨川；雍正元年（癸卯年），考中一甲第二名（榜眼），因朝廷恩荫，被敕封为文林郎、翰林院编修；乾隆辛卯年，孙子戴翼子担任御史，再次遇到朝廷恩荫，赠官与其官职相当。他的曾孙谏议公祖启说：我的祖父北山先生，以通达儒学和深奥的医学著称，所论述撰写的关于伤寒、杂病等方面的书籍，以及《咳论注》、《疟论注》、《广瘟疫论》，共有十几种；都是先伯父雪村先生用行楷细字抄录保存在家中的。最近坊间有《瘟疫明辨》四卷本，公祖启购买阅读后，发现那就是我祖父在存存书屋收藏的《广瘟疫论》。虽然换了书名，但未曾改动原文，不知为何误刻为歙县郑某的书稿：对于我祖父来说固然不在乎这个，但子孙见到这种情况，不容许不加以纠正。因此拿出存存书屋的原版，校对后刊刻，以纠正错误的流传，并弘扬祖先的德行。通过这两则记载，可以想见他的为人，可惜没能看到他的全书而读完它！
己酉年春季，南京濮凤笙君邮寄来《广温热论》抄本一册，嘱咐我校勘付印，我因为诊疗事务繁忙，任职众多，每日时间不够用，暂时将其搁置在高阁之上；后来因为濮君多次驰信催促，不得已，勉强承担这项任务，将原书一一浏览，才知道这本书就是戴氏的《广瘟疫论》：而陆九芝对其进行了删减修订，改定书名为《广温热论》。看到书中论述温热症非常精辟，论述温热病中各种出现的症状也极其清晰，确实是当今最有实用价值的书籍。
所以陆九芝在原序中说：北山先生的这本书，以温热与伤寒进行辨析，条理分明，逐病梳理明确，伤寒的治疗，不与温热混淆；温热的治疗，不与伤寒混淆；确实像秦越人所说“热病”、“温病”不同于“伤寒”那样，划分界限，不得逾越一步。然而这本书明明是论述温热，但书名却叫《广瘟疫》；篇中有时称疫疠，有时称时疫，有时单称疫，仿佛自己忘记了这是论述温热的著作。这说明伤寒与温热，北山先生能辨析清楚，而温热与瘟疫，北山先生却将它们混淆了。我喜爱他的论述精辟，而惋惜书名的错误，于是将所有称为时行疫疠的地方，全部改为温热，或称为伏邪。开篇的话：“世上的治疗伤寒者，常误用温热的方法来治；治疗温热者，又误用伤寒的方法来治。”这四句话是我添加的，有了这一提示，作书的意图便在卷首澄清：于是为之改题为《广温热论》。那么这本书确实足以成为温热病的正宗法度了！他的话就是这样。
然而我仔细研读原书，发现其中对湿温、燥热两种病症，论述非常简略，尚少发明之处，即用药选方，也有很多不尽善尽美的地方，这并非我一人的偏见。试陈述陆九芝的原评：这本书明辨温热与伤寒，清晰得如同眉毛一样分明，确实足以作为救世的金针。但温热与瘟疫，仍然混同没有区别，因此我为之改正了文中的错误；命令儿子润庠手抄录入，然而经过多次删改，始终不能令人满意。接着陈述邴味清的原评：这本书的各篇论述，都有至理；即使应当在《伤寒论》中选方，才能见到大家的气魄；可惜多采用后人夹杂的方剂，未免违背经典宗旨，而且既然知道不可用辛温之法，却始终不出羌活汤、败毒散的范围；放弃了经方中辛凉的方法不用，先生恐怕也是趋时太甚吧。再次陈述李鹤访的新评：这本书未将风温、湿温、春温、冬温等厘清，而一概称为时行，未免含混；至于列出大青龙汤、九味羌活汤，沿袭古代治疗温病的方剂，那就更疏漏了。夫温热病，热邪从内发出，岂可用大青龙汤中的麻黄、桂枝，猛烈发汗呢？如果九味羌活汤，都是一派辛燥雄烈之药，夹入生地，引邪入阴，真是杂乱而不精妙的方剂。
综合这三种说法来看，北山先生的这本书，虽然经过陆氏删定，但最终不能让人心意满足、贵当合适的，陆九芝先生自己承认了。而列方纯杂互收的问题，邴、李二家已经指出了端倪。所以我斗胆愚昧，于是悉心重新订正；将原书缺失的补上，错误的删除；更选择古今历代名医的好方，并且为我亲自验证无误的，补充在其中。务必使后来的读者知道，这本书专为伏气温热而设，不是为新感温暑而言，辨证精确、用药得当，差不多能与戴氏撰写的精心、陆氏删订的苦心，心心相印，永垂久远，而我的心才感到满足。唉！没有人做前导，虽然美好也不显扬；没有人做后继，虽然兴盛也不流传。世上的博学高雅君子，应该也能体谅我的苦衷吧。
黄帝纪元四千六百九年十月十五日，何炳元廉臣识于越中的宣化坊。
According to the *Shangyuan County Annals*: Dai Tianzhang, courtesy name Linjiao, was a student (Xiangsheng) of the county school. In his youth, he studied under Lin Qinglei, pursuing the scholarly curriculum for imperial examinations. He was diligent in learning and had an excellent memory; he could recite entire chapters of the classics and histories backwards, as smoothly as water pouring from a bottle. As an adult, writing essays alone was insufficient for seeking official rank (Ganlu), so he sought practical knowledge. From astronomy, geography, mathematics, archery, and hunting, to calligraphy, painting, the lute, and chess, he explored every subtlety and essential point. He was especially proficient in medical principles, reading extensively and thinking deeply, saving countless lives. He refused monetary rewards. When elegant scholars from all over arrived, they would stay overnight to consult him. He taught his children, urging them to study diligently and hard. In his later years, he styled himself Beishan, and scholars referred to him as Mr. Beishan. His eldest son, Dai Han, courtesy name Juchuan, ranked second in the first class (Bangyan) in the Gui Mao year of the first year of the Yongzheng reign. By imperial grace, he was posthumously conferred the title of Wenlin Lang and Compiler at the Hanlin Academy. In the Xinmao year of the Qianlong reign, his grandson, Dai Yizi, served as a Censor. Upon encountering imperial grace again, he was granted a title equivalent to his office. His great-grandson, Jianyi Gong Zuqi, stated: "My grandfather, Mr. Beishan, was a Confucian scholar profound in medicine. The books he discussed and wrote regarding Cold Damage (Shanghan), miscellaneous diseases, as well as the *Annotations on Cough*, *Annotations on Malaria*, and *Guang Wenyi Lun* (Expanded Treatise on Plague-Warmth), numbered more than ten kinds. All were copied by my late uncle, Mr. Xuecun, in fine running-script characters and preserved at home. Recently, a four-volume work titled *Wenyi Mingbian* (Clear Distinction of Plague) appeared in the book markets. I purchased and read it, and found it to be exactly my grandfather's *Guang Wenyi Lun* stored in the Cun Cun Study. Although the title was changed, the text was not altered. It is unknown why it was mistakenly printed as the work of a certain Zheng from Shexian County. While my grandfather certainly did not contend for this, seeing it as descendants, we cannot allow it to remain uncorrected. Therefore, I produced the original version from the Cun Cun Study, collated it, and had it printed to correct false transmissions and propagate our ancestor's virtue." Observing these two records, one can imagine his character. It is a pity that I could not see his complete works and finish reading them!
In the spring of the Jiyou year, Mr. Pu Fengsheng from Nanjing mailed me a manuscript copy of *Guang Wenre Lun* (Expanded Treatise on Warm-Heat), requesting that I collate and print it. Because I was busy with clinical duties and held many positions, lacking sufficient time each day, I temporarily placed it on a high shelf. Later, due to repeated urgent letters from Mr. Pu, I reluctantly agreed to take on the task. After browsing through the original book one by one, I realized that this book was indeed Dai's *Guang Wenyi Lun*, which had been edited and revised by Lu Jiuzhi, who changed its title to *Guang Wenre Lun*. I saw that its discussion of Warm-Heat syndromes (Wenre Zheng) was very refined, and its explanation of various symptoms appearing in Warm-Heat diseases was extremely clear. It is truly the most practical book of the current era.
Therefore, in Lu Jiuzhi's original preface, it states: "Mr. Beishan's book distinguishes between Warm-Heat and Cold Damage, analyzing them clearly item by item and clarifying each disease. The treatment of Cold Damage is not confused with Warm-Heat; the treatment of Warm-Heat is not confused with Cold Damage. This truly draws a boundary between 'Hot Diseases' and 'Warm Diseases' (as described by Qin Yue Ren) and 'Cold Damage', without allowing any transgression. However, although the book clearly discusses Warm-Heat, its title is *Guang Wenyi Lun*. In the text, it sometimes refers to Yi Li (plague pathogens), sometimes Shi Yi (seasonal plague), and sometimes simply Yi (plague), as if forgetting that it is discussing Warm-Heat. Thus, while Mr. Beishan could distinguish Cold Damage from Warm-Heat, he confused Warm-Heat with Plague. I admired the precision of his arguments but regretted the error in the title. Therefore, I changed all references to seasonal epidemics to 'Warm-Heat' or 'Latent Pathogens'. The opening sentence, 'Those who treat Cold Damage often mistakenly use Warm-Heat methods, and those who treat Warm-Heat often mistakenly use Cold Damage methods,' was added by me. With this prompt, the intention of writing the book is clarified at the beginning. Thus, I retitled it *Guang Wenre Lun*. This book is indeed worthy of being the orthodox canon for Warm-Heat diseases!" Such were his words.
However, upon careful study of the original book, I found that its discussion of Damp-Warmth (Shi Wen) and Dry-Heat (Zao Re) syndromes was very brief, lacking further elucidation. Moreover, the selection of herbs and formulas was not entirely perfect. This is not merely my personal bias. Let me quote Lu Jiuzhi's original critique: "This book clearly distinguishes Warm-Heat from Cold Damage, as clear as listing eyebrows, truly worthy of being a golden needle for saving the world. However, Warm-Heat and Plague are still conflated without distinction, so I corrected the text. I ordered my son Runxiang to hand-copy it, but despite multiple revisions, it never fully satisfied me." Next, let me quote Bing Weiqing's original critique: "The discussions in this book contain profound truths. Even selecting formulas from the *Treatise on Cold Damage* (*Shanghan Lun*) reveals the style of a master. Unfortunately, it adopts too many mixed formulas from later generations, which somewhat contradicts the essence of the classics. Furthermore, since it knows that acrid-warm methods should not be used, yet remains within the scope of Qianghuo Tang and Baidu San, abandoning the acrid-cool methods of classic formulas, Mr. Beishan may have been too inclined to follow trends." Again, let me quote Li Hefang's new critique: "This book fails to clarify Wind-Warmth, Damp-Warmth, Spring-Warmth, and Winter-Warmth, instead generally calling them 'seasonal occurrences,' which is vague. Listing Da Qing Long Tang and Jiu Wei Qiang Huo Tang, following ancient formulas for treating Warm diseases, is even more negligent. Warm-Heat diseases involve heat originating from within; how can one use Ephedrae Herba (Mahuang) and Cinnamon Twig (Guizhi) from Da Qing Long Tang to induce violent sweating? As for Jiu Wei Qiang Huo Tang, it consists entirely of acrid-dry and potent herbs. Adding Rehmanniae Radix Preparata (Shu Dihuang) here draws pathogens into the Yin level. It is truly a mixed and imprecise formula."
Considering these three critiques, although Mr. Beishan's book has been edited by Mr. Lu, the fact that it ultimately fails to satisfy completely is acknowledged by Mr. Jiuzhi himself. The issue of mixing pure and impure formulas has been pointed out by Messrs. Bing and Li. Therefore, I, presumptuously and humbly, have carefully re-edited it. I supplemented missing parts, deleted errors, and selected excellent formulas from famous physicians of past and present dynasties that I have personally verified to be effective, adding them to the text. My goal is to ensure that future readers know this book is specifically designed for Latent Warm-Heat (Fu Qi Wenre), not for newly contracted Warmth and Summer-Heat (Xin Gan Wen Shu). With precise syndrome differentiation and appropriate medication usage, it will resonate with the meticulous effort of Dai's composition and Lu's editorial diligence, lasting forever, thereby satisfying my heart. Alas! Without a predecessor, beauty does not shine; without a successor, prosperity does not spread. I hope learned gentlemen of the world will understand my bitter intentions.
On the 15th day of the 10th month of the 4609th year of the Yellow Emperor's Era, He Bingyuan Lianchen recorded at Xuanhua Fang in Yuezhong.