一、医籍浩如烟海，求其搜罗赅备，分析详明，莫如《准绳》一书。兹编务期简括，俾观者豁目爽心，
故径途各出。
一、仲景《伤寒》，宜参各家辨论，兹但取《医学心悟》数条，不能备载。
一、春温夏热两症，多伏气伤寒，邪从肾出，此即经所云∶冬伤于寒，春必病温，冬不藏精，春必病
温者也。与口鼻吸入之邪，伏于募原，浅深异治，学人当分别观之。
一、时疫症张景岳既失之温补，吴又可又但主急下。《张氏医通》揭明地气郁蒸一义，最宜参究。
一、香岩叶先生所传《临症指南》，案随诊立，不暇修饰。然如脾脏胃腑，历来混治，先生独因经旨，
喜燥喜凉，悟出脏主守、腑主通二义。论东垣补中益气治在脾，仲景急下存阴治在胃，何等超妙！即如不食一
症，粗工但知燥脾，愈燥愈结，先生独议养胃阴，遵治辄验，此类皆素所服膺。
一、肝风眩晕，与类中风相近，原可并为一门，兹根据《指南》例，另为拈出，意在醒目。
一、目、喉、乳俱系专科，病症治法繁琐，不能备辑，兹但撮其要。
一、各症宗经立论，酌古用方，列纲分目，皆层层推勘而出。但方中品味，未能一一商订，皆垂暮精
神不能周浃之故，阅者谅之。
一、论中于精要处用“。”，提纲处用“、”，俾阅者得其意旨，一目了然。
一、方名重复者，则不注药味，但书见某卷某症。至于方名同而药味不同者，则仍载原方。
一、外科另属一门，今附论数篇，列于卷末，俾阅者略知要领。
1. Medical classics are as vast as the sea and sky; to find a work that is comprehensive in collection and detailed in analysis, none surpasses *Zhunsheng* (Standard of Diagnosis). This compilation strives for conciseness, aiming to make the reader's vision clear and mind refreshed; thus, the approaches taken vary.
2. Regarding Zhang Zhongjing's *Shanghan Lun* (Treatise on Cold Damage), it is advisable to consult the辨证 (pattern differentiation) discussions of various schools. Here, only a few excerpts from *Yixue Xinyu* (Medical Enlightenment) are selected, and it is impossible to record them all.
3. Spring-warmth (Chunwen) and summer-heat syndromes often involve latent-cold cold damage (Fuqi Shanghan, where pathogenic cold lies dormant within the body and manifests later). The pathogen emerges from the Kidney. This corresponds to the classic statement: "If one is injured by cold in winter, one will inevitably suffer from warmth diseases in spring; if one fails to store essence in winter, one will inevitably suffer from warmth diseases in spring." This differs from pathogens inhaled through the mouth and nose, which lie dormant at the Mu Yuan (Moyuan, the space between the exterior and interior); their depth varies, and treatments differ accordingly. Students should observe and distinguish them separately.
4. In the treatment of seasonal epidemic diseases (Shiyi Zheng), Zhang Jingyue erred by overusing warming and tonifying methods, while Wu Keyou focused solely on urgent purgation (Jixia). *Zhangshi Yitong* (Comprehensive Essentials of Zhang) elucidates the concept of earth qi stagnation and steaming (Diqi Yuzheng, where damp-heat qi stagnates and steams), which is most worthy of reference and study.
5. Mr. Ye Tianshi (Ye Xiangyan) transmitted the *Linzheng Zhinan* (Guidelines for Clinical Practice). These case records were established according to diagnoses and consultations, leaving no time for refinement. However, regarding the Spleen and Stomach organs, which have historically been treated indistinguishably, Mr. Ye alone followed the principles of the classics, noting that the Spleen prefers dryness and the Stomach prefers coolness. He realized two key meanings: "Zang organs govern retention (Shou), while Fu organs govern unblocking (Tong)." He discussed how Li Dongyuan's Buzhong Yiqi Tang targets the Spleen, while Zhang Zhongjing's urgent purgation to preserve Yin targets the Stomach—how profound and exquisite! For instance, in cases of anorexia (Bushí), crude practitioners only know to dry the Spleen, leading to greater stagnation with more drying. Mr. Ye alone advocated nourishing Stomach Yin, and following his treatment yielded consistent results. Such insights are what I have long held dear and firmly believed in.
6. Liver wind dizziness is similar to stroke-like syndromes (Lei Zhongfeng) and could originally be grouped into one category. Here, following the example of the *Zhinan*, it is singled out separately to draw attention.
7. Eye disorders, throat diseases, and breast diseases all belong to specialized departments. Their symptoms and treatments are complex and cumbersome, making it impossible to compile them fully. Here, only their essentials are summarized.
8. Discussions on various syndromes are based on classical theories, and ancient formulas are carefully selected for use. Outlines and sub-items are derived through layer-by-layer deduction. However, the specific ingredients in the formulas could not be verified one by one, due to my declining energy in old age. Readers are asked to understand this.
9. In the text, periods "." are used for essential points, and enumeration marks "、" are used for outline points, so that readers can grasp the intent at a glance.
10. For repeated formula names, drug ingredients are not annotated, but rather noted as appearing in a specific volume and syndrome. For formulas with the same name but different ingredients, the original formulas are still recorded.
11. Surgery belongs to a separate discipline. A few essays on surgery are now appended at the end of the volume, so that readers may briefly understand the essentials.