一论证须明其所以然，则所当然者不言而喻。兹集务穷其源，故论证详而系方
略（如怒、太息等篇，并不系一方，但明其理，则方在其中，如必欲考古人成法，于
《准绳》等书检求可也。）
一论中所引古人成说，欲令读者易晓，不无修饰之处，即非古人原文，故多不
着其名氏，非掠美也，谅之。
一议论多出臆见，间与古人抵牾，不避不敏，求正有道，幸恕狂瞽。
一河间言暑火，乃与仲景论风寒对讲；丹溪言阴虚，乃与东垣论阳虚对讲，皆
以补前人所未备，非偏执也。后人动议刘、朱偏用寒凉，矫以温补，立论过当，遂
开酷烈之门。今日桂、附之毒，等于刀锯。梦瑶目睹时弊，不得不救正其失，初非
偏执，读者幸勿以辞害意。
一是集宦游所作，自粤西而辽左，十余年来，风 烟江，霜轮沙碛，偶
有所得，随付小史录之，以故体裁无定，亦欲改从画一，而多事仓卒，未能也。
一论目、方目各下注页数，而方目之前，复冠以门目两页，下注方目页数，使
先得方目页数，而后查诸方页数，皆以便检寻也。
一诸方有在论外者，（如《关格门》方全在论外，《虫门》取虫积，二方在论外是也。）检方目即得。
一论中主治诸方，隶别门者，注明见某门字样。其不注者，即本门方。或虽隶
别门，而一篇之中重出数见，亦但于首见者注之，余不复注。
一方下例系主治，以着本方之功，即以明用药之理。（知某药为某病设也。）凡品味 杂
者，必所治之证不一，丹溪所谓杂合之病，须用杂合之药治之也。本宜备录，以锓
板力绌删之，用方者当因病加减，更详考原方主治为佳。（诸方多从《准绳》录入，按
门索之。）
一药品分两轻重古今不同，炮制亦异，当酌宜用之。
一此书只论杂证，尚有《伤寒论近言》、《妇科辑要》、《幼科辑要》、《痘疹辑要》、
《本草韵语》、《针灸吹云集》等书，俟续刻呈教。
一五卷四诊，HT 思恩时辑以教邑医者，本自为一书，今附《医碥》之末，颇多
改窜，与旧本岐出，当以今刻为定。
Article 1: In discussing pathogenesis, one must elucidate the "so-why" (the underlying rationale), so that the "so-what" (the appropriate course of action) becomes self-evident. This collection strives to exhaustively investigate the source of disease; therefore, the discussion of syndromes is detailed, while the accompanying formulas are concise (e.g., in chapters such as "Anger" and "Sighing," no specific formula is directly listed; rather, the principle is clarified, implying the formula within. If one insists on verifying ancient established methods, they may consult texts like *Yixue Zhunsheng Liuyao* [Six Essentials of Medical Standards]).
Article 2: The ancient theories cited in this work have been polished to facilitate reader comprehension. Even if they are not verbatim quotes from the ancients, names are often omitted. This is not intended to claim others' achievements as one's own; readers are asked to understand this intention.
Article 3: The discussions herein largely stem from personal insights and occasionally contradict ancient views. I do not shy away from my own lack of talent, but seek correction through proper channels. I hope for forgiveness for my presumptuousness.
Article 4: Liu Wansu’s theory of Summerheat-Fire contrasts with Zhang Zhongjing’s discussion of Wind-Cold; Zhu Danxi’s theory of Yin Deficiency contrasts with Li Dongyuan’s discussion of Yang Deficiency. These contributions supplement what was previously incomplete and are not expressions of bias. Later practitioners often criticized Liu and Zhu for overusing cold and bitter herbs, leading them to overcorrect by advocating warm and tonifying methods. Their arguments were excessive, thereby opening the door to the abusive use of harsh and acrid drugs. Today, the toxicity of Cinnamon Twig (*Guizhi*) and Aconite Root (*Fuzi*) is likened to the injury caused by saws and axes. Witnessing these contemporary abuses, I felt compelled to correct these errors. My intent is not biased; readers are urged not to let literal meanings obscure the deeper intent.
Article 5: This collection was compiled during my official travels, from Western Guangdong to Liaoning. Over more than ten years, amidst wind, rain, rivers, frost, wheels, and desert sands, I recorded occasional insights in a small notebook. Consequently, the style is not uniform. Although I wished to standardize it, busy schedules prevented me from doing so.
Article 6: Page numbers are noted below each chapter title and formula list. Additionally, two pages precede the formula list under each category, noting the page range for the formulas, allowing readers to first locate the formula index page and then find specific formulas, facilitating easy retrieval.
Article 7: Some formulas appear outside their respective discussions (e.g., all formulas in the "Guan Ge" [Constrained and Rebellious] category are outside the text; two formulas for treating insect accumulation in the "Insect Accumulation" category are also outside). These can be found by consulting the formula index.
Article 8: For main formulas discussed in the text, if they belong to another category, a note "see Category X" is provided. If no note is present, the formula belongs to the current category. Even if a formula belongs to another category, if it appears multiple times within a single chapter, it is only noted at its first appearance, with subsequent mentions left unannotated.
Article 9: Below each formula, the primary indications are typically listed to highlight the formula’s efficacy and clarify the rationale for herb selection (knowing which herb is designed for which condition). Formulas with complex compositions treat diverse syndromes, aligning with Danxi’s principle that mixed diseases require mixed treatments. Ideally, all should be recorded, but due to limited engraving funds, some were deleted. Practitioners should modify formulas based on individual conditions and carefully study the original indications. (Most formulas are transcribed from *Yixue Zhunsheng Liuyao*; refer to the categories for access.)
Article 10: The weight measurements for herbs differ between ancient and modern times, and processing methods vary. Dosages should be adjusted appropriately according to circumstances.
Article 11: This book focuses solely on miscellaneous diseases. Other works include *Shanghan Lun Jinyan* [Near Words on Cold Damage Treatise], *Fuke Jiyao* [Essentials of Gynecology], *Youke Jiyao* [Essentials of Pediatrics], *Douzhen Jiyao* [Essentials of Smallpox], *Bencao Yuyu* [Rhymes of Materia Medica], and *Zhenjiu Chuiyun Ji* [Wind Cloud Collection of Acupuncture and Moxibustion]. These will be presented for instruction upon future publication.
Article 12: Volume Five, covering the Four Diagnostic Methods, was originally compiled by Mengyao during his tenure in Si’en Prefecture to teach local physicians. It was originally an independent work. Now attached to the end of *Yiquan*, it has undergone significant revision and differs from the old version. The current printed edition shall be considered definitive.