伤寒之不明也，以中寒乱之。瘟疫之不明也，以伤寒乱之。能于其中划然分析，则其于治伤寒
瘟疫也，思过半矣。伤寒自仲景而下，承承继继，各有专家。着书立说者，无虑数十种。独至瘟疫，
则略而不讲焉。间有谈及者，不过寥寥数语。核焉而不精，语焉而不详。遂至瘟疫一症，靡所指归，
往往以治伤寒法治之。非大用温散，即过投苦寒，欲病之愈也难矣。先大人引岚公，一生精于医理，
南北宦游，虽簿书鞅掌，间闻人疾苦，莫不竭力拯救。余公聆庭训，非伊芳朝夕。且龆年善病，因得
于暇日，取家藏岐黄书纵观之，故颇有会心处。因念瘟疫一门，非他症可比，不能迟之岁月，缓为调
理。其见效在一二剂之内，其痊愈在三五日之间。不可不亟为讲究，以共登宝筏。昔吴又可《瘟疫论》
一书，较之诸家俱见卓识，独辟蚕业，业已盛行海内。故其方论，兹集一概不录。第就自所经历者，
聊纾管见，以羽
翼又可，当亦谈疫者之所不斥也。夫疫病所包甚广，而瘟疫特其一耳。又添杂疫、寒疫，各着方论，
而症治始备，随编辑酌定，分为六卷。曰述古，曰论治，曰杂疫，曰辨疑，曰诸方，曰运气，
亦庶几成一家言焉。第是书之成，锦儿之力居多。其曰《松峰说疫》者，明乎其不敢擅为己有，以成
善则归亲之意云尔。其中分伤寒与瘟疫，皎若列眉，而理路治法亦颇审慎，不敢掩古人所长而袭为己有。
亦不敢震前贤名望而为其所愚。第疫症千变万化，治之不可胶执，亦不可师心所顾。同志君子，神明
而变通之是，则余之浓望也。夫是为序。
伤寒病之所以难以明晰，是因为中寒（感受寒邪）混淆了它。瘟疫病之所以难以明晰，是因为用伤寒的方法来混淆它。如果能在这两者之间清晰地加以区分，那么治疗伤寒和瘟疫的道理，就掌握了一大半了。自张仲景之后，关于伤寒的研究代代相传，各有专门研究的专家。撰写著作阐述学说的人，不少于几十种。唯独对于瘟疫，则简略而不加探讨。偶尔有谈及的，也不过寥寥数语。考察得不够精确，论述得也不够详细。以至于瘟疫这一病症，没有明确的归属指向，往往用治疗伤寒的方法来治疗它。不是大量使用温散药物，就是过度投用苦寒药物，想要使疾病痊愈是很困难的。我的父亲刘引岚公，一生精通医理，在南北各地做官游历，虽然公务繁忙，但偶尔听到百姓疾苦，无不竭力拯救。我聆听父亲的教诲，并非朝夕之间的事。而且我年少时多病，因此得以在闲暇之日，取家中收藏的岐黄（中医经典）书籍广泛阅读，所以颇有心得领会之处。于是想到瘟疫这一门类，不同于其他病症，不能拖延岁月、缓慢调理。其见效在一两剂药之内，其痊愈在三五日之间。不可不急于研究探讨，以便共同登上救度的宝筏。昔日吴又可的《瘟疫论》一书，比起各家都见识卓越，独辟蹊径，已经在海内外盛行。所以他的方剂和论述，本集一概不收录。只是就自己亲身经历的经验，略微抒发浅见，以辅助吴又可的理论，这应当也是谈论瘟疫者所不会排斥的。疫病所包含的范围很广，而瘟疫只是其中的一部分罢了。又增添了杂疫、寒疫，各自撰写方论，这样症状和治疗才完备。随即编辑斟酌确定，分为六卷。分别是：述古、论治、杂疫、辨疑、诸方、运气，也差不多可以自成一家之言了。只是这本书的完成，锦儿（作者女儿或亲属名）的功劳居多。书名为《松峰说疫》，是表明不敢擅自据为己有，以体现善行归于亲人的意思。其中将伤寒与瘟疫区分开来，像眉毛一样清晰分明，而理路治疗方法也颇为审慎，不敢掩盖古人的长处而据为己有。也不敢凭借前贤的名望而被其所愚弄。只是疫病症状千变万化，治疗不可固执拘泥，也不可随心所欲。志同道合的君子，若能神妙地运用并灵活变通，那就是我的深切期望了。这就是序言。
The reason why Shanghan (Cold Damage) is not clearly understood is that Zhonghan (contracting cold pathogens) confuses it. The reason why Wenyi (Plague/Epidemic Disease) is not clearly understood is that Shanghan confuses it. If one can clearly distinguish between them, then regarding the treatment of Shanghan and Wenyi, more than half of the understanding has been attained. Since Zhang Zhongjing, the study of Shanghan has been passed down generation after generation, with each having its own specialists. There are no less than dozens of books written to expound theories. Yet, regarding Wenyi, it is often neglected and not discussed. Occasional mentions consist of only a few words. The examination is imprecise, and the discussion is not detailed. Consequently, for the syndrome of Wenyi, there is no clear direction, and it is often treated using methods for Shanghan. Either large doses of warm-dispersing herbs are used, or bitter-cold herbs are overdosed, making it difficult for the disease to heal. My father, Liu Yinlan, was proficient in medical principles throughout his life. He served as an official in both the north and south; although burdened with administrative duties, whenever he heard of people's suffering from illness, he spared no effort to save them. I listened to my father's teachings, not merely day and night. Moreover, being prone to illness since childhood, I had the opportunity during leisure time to extensively read the Qi-Huang (Traditional Chinese Medicine classics) books collected by my family, thus gaining many insights. I realized that the category of Wenyi cannot be compared to other syndromes; it cannot be delayed for years or managed with slow regulation. Its efficacy appears within one or two doses, and recovery occurs within three to five days. It is imperative to study it urgently so that we may jointly board the raft of salvation. In the past, Wu Keyou's *Wenyi Lun* (Treatise on Plague) demonstrated superior insight compared to other schools, carving out a unique path, and it has already become popular throughout China and abroad. Therefore, his formulas and discussions are not included in this collection. Instead, I briefly express my humble views based on personal experience to assist Wu Keyou, which I believe will not be rejected by those discussing epidemics. Epidemic diseases encompass a broad range, while Wenyi is but one part thereof. I have added Zayi (Miscellaneous Epidemics) and Hanyi (Cold Epidemics), writing formulas and discussions for each, thereby completing the symptomatology and treatment. After editing and refining, the work is divided into six volumes: Shugu (Discussing Antiquity), Lunzhi (Discussing Treatment), Zayi (Miscellaneous Epidemics), Bianyi (Resolving Doubts), Zhu Fang (Various Formulas), and Yunqi (Climate and Qi). This allows it to roughly form a school of thought of its own. However, the completion of this book owes much to Jin'er. The title *Songfeng Shuo Yi* indicates that I dare not claim it as my own, reflecting the intention to attribute merit to my elders. It clearly distinguishes between Shanghan and Wenyi, as distinct as eyebrows, and the theoretical approach and treatment methods are quite cautious. I dare not obscure the strengths of the ancients and claim them as my own, nor dare I be misled by the reputation of former sages. However, epidemic symptoms change in thousands of ways; treatment must not be rigidly adhered to, nor should it be done arbitrarily. It is my earnest hope that gentlemen of like mind will apply divine wisdom and flexible adaptation. This is the preface.