仲景伤寒论曰。凡人有疾。不时即治。隐忍冀瘥。以成痼疾。小儿女子。益以滋甚。时气不和
。盒饭早言。若不早治。真气失所。邪方萌动。无惮劬劳。不避晨夜而即治之。则药饵针艾之效。
必易为之。不然患人忍之。数日乃说。邪气极盛而病极。成而后施治。必难为力。内经曰。其善治
者治皮毛。其次治肌肤。其次治六腑。其次治五脏。治五脏者、半死半生矣。正以谓此。昔桓侯怠
以皮肤之微疾。以至骨髓之病。虽悔何及。戊午春。桃李始华。雨雪浓寸许。一园叟遽令举家执梃
击树。尽堕其雪。又焚束草于其下以散其寒。使冲和之气
未伤而复。是年他家果皆不成熟。独此园大熟。噫。果木之病。治之尚有不损。况人之有病。可不
早治乎。故金匮玉函云。生候长存。形色未病。未入腠理。针药及时。脉浮调节。委以良医。病无
不愈者矣。
罗谦甫先生卫生宝鉴一书。分门别类。纤悉俱备。惟治伤寒之法。虽纪述一二而不全录。盖以
其一门理趣幽深。未易殚举。况其玄机妙旨。已备于仲景以下历代名医书中。先生之意。欲使可医
者究心寻绎。庶得其奥。今犹恐遐方僻壤。临病仓卒。医者欲求全书检阅。岂可得乎。故
粗述仲景诸公治内伤外感经验方。并中暑方。附刊卷末。名曰补遗。庶免卤莽灭裂之辈。妄投匕剂。
误伤于人耳。若欲究其极致。则仲景治外感三百九十七法。一百一十三方。东垣治内伤国中末三法。
及历代名医方论。具有全书。诚能刻意推求。以施治疗而全人生。亦仁者之用心也。兹不能尽述云
。
张仲景在《伤寒论》中说：大凡人生病，如果不及时治疗，隐忍病情希望自愈，就会演变成顽固难愈的疾病。这种情况对于小儿和女子来说，更是会日益加重。如果身体与时令之气不和，应当尽早告知医生。如果不及时治疗，人体的真气就会受损，邪气开始萌动。此时不应畏惧辛劳，不避早晚，立即进行治疗，那么药物、针灸的效果，必定容易显现。否则，患者忍耐数日才诉说病情，此时邪气已经极盛，病情发展到极点，再施以治疗，必定难以奏效。《黄帝内经》说：善于治病的人，在病邪尚在皮毛时就治疗；其次是在肌肤层面治疗；再次是在六腑层面治疗；最次是在五脏层面治疗。治疗五脏疾病的患者，一半死亡，一半存活。正是说的这个意思。从前关羽（桓侯）因为轻视皮肤上的微小疾病，最终导致病入骨髓，即使后悔又有什么用呢？戊午年春天，桃花李花刚开始开放，却下了浓密的雪，积雪有一寸多厚。一位老园丁立刻让全家拿起棍棒击打树木，抖落树上的积雪，又在树下焚烧捆扎好的草束来驱散寒气，使树木的冲和之气没有受到损伤而得以恢复。这一年，其他果园的果实果然都没有成熟，唯独这位老园丁的果树大丰收。唉，果木生病，及时治疗尚且不造成损失，何况人有了疾病，能不早点治疗吗？所以《金匮玉函经》说：生命征象长久存在，形体神色尚未表现出病态，病邪尚未进入腠理，及时使用针药调理，脉象浮浅易于调节，委托给良医，疾病没有不能治愈的。
罗谦甫先生的《卫生宝鉴》一书，分门别类，细致详尽。只是关于治疗伤寒的方法，虽然记述了一部分，但没有全部收录。大概是因为这一门的道理意趣幽深，不容易详尽列举。况且其中的玄机妙旨，已经在张仲景及历代名医的书中备全了。先生的本意，是希望懂医术的人用心探究寻绎，或许能掌握其中的奥妙。如今仍然担心偏远地区，遇到突发疾病时匆忙失措，医生想要寻找全书查阅，怎么可能呢？所以粗略叙述张仲景等各位前辈治疗内伤外感的经验方，以及中暑的方剂，附刊在卷末，命名为“补遗”，以免那些鲁莽粗疏的人，胡乱投药，误伤人命。如果想要探究其极致，那么张仲景治疗外感的三百九十七法、一百一十三方，李东垣治疗内伤的初、中、末三法，以及历代名医的方论，都有完整的书籍。如果能刻意推求研究，用来实施治疗以保全人的生命，也是仁者的用心啊。这里就不一一尽述了。
Zhang Zhongjing stated in the *Treatise on Cold Pathogenic Diseases* (*Shanghan Lun*): "When a person falls ill, if it is not treated promptly, and one endures the condition hoping for spontaneous recovery, it will develop into an entrenched disease. This aggravation is even more pronounced in children and women. When the body's constitution is out of harmony with the seasonal qi, one should inform the physician early. If treatment is not initiated promptly, the healthy qi (*Zhenqi*) will be depleted, and pathogenic factors (*Xieqi*) will begin to stir. At this stage, one should not fear labor or avoid day and night, but treat immediately; then the efficacy of herbal medicine (*Yaowu*), acupuncture (*Zhenjiu*), and moxibustion (*Ai*) will surely be easily achieved. Otherwise, if the patient endures for several days before reporting the illness, the pathogenic factors will be at their peak, and the disease will be at its most severe stage. Treatment applied after such progression will inevitably be difficult to effect. The *Yellow Emperor's Inner Canon* (*Huangdi Neijing*) states: 'The skilled healer treats when the pathogen is in the skin and hair (maopi); the next best is treating when it is in the muscles and skin (jifu); then when it is in the six fu organs (liufu); and lastly when it is in the five zang organs (wuzang). Those whose diseases reach the five zang organs have a fifty-fifty chance of survival.' This is precisely what is meant. In the past, Guan Yu (Marquis Huanhou) neglected a minor ailment in his skin, which eventually led to disease penetrating to the bone marrow. What use would regret be then? In the spring of the Wuwu year, peach and plum blossoms had just begun to bloom, yet heavy snow fell, accumulating to about one cun thick. An old gardener immediately instructed his entire family to take sticks and beat the trees, shaking off all the snow. He also burned bundles of straw beneath them to dissipate the cold, ensuring that the harmonious qi (*Chonghe zhi qi*) of the trees was not injured and could recover. That year, the fruits of other orchards indeed failed to mature, while only this gardener's trees yielded a bumper harvest. Alas, if fruit trees' ailments can be managed without loss through timely treatment, how much more so should human illnesses be treated early? Thus, the *Jinkui Yufan Jing* states: 'As long as the vital signs remain stable and the physical appearance has not yet manifested pathological changes, and the pathogen has not entered the couli (interstices), timely application of acupuncture and herbs can regulate the floating pulse. Entrusting oneself to a competent physician ensures that no disease remains incurable.'
Mr. Luo Qianfu’s book, *Weisheng Baojian*, categorizes topics meticulously and covers details comprehensively. However, regarding methods for treating cold damage (*Shanghan*), although some are recorded, they are not fully included. This is likely because the principles and subtleties of this category are profound and difficult to exhaustively enumerate. Moreover, the profound mysteries and essential teachings are already fully contained in the works of Zhang Zhongjing and famous physicians of subsequent generations. Mr. Luo’s intention was to encourage those knowledgeable in medicine to study and explore deeply, thereby hopefully grasping the core secrets. Nevertheless, he remained concerned that in remote regions, when sudden illnesses occur, physicians might struggle to find the complete text for reference. Therefore, he briefly listed empirical formulas from Zhang Zhongjing and others for treating internal injury (*Neishang*) and external contraction (*Waigan*), as well as formulas for heatstroke (*Zhongshu*), appending them to the end of the volume under the title "Supplementary Material" (*Buyi*). This aims to prevent rash and careless individuals from administering drugs blindly and harming patients. For those wishing to explore the subject to its utmost extent, there exist complete texts containing Zhang Zhongjing’s 397 methods and 113 formulas for external contraction, Li Dongyuan’s three stages (early, middle, late) of treatment for internal injury, and the formula discussions of famous physicians throughout history. Diligent study and application of these treatments to preserve life embody the heart of a benevolent practitioner. It is not possible to recount everything here.