天下事至变者病，而可见者恃乎形；至精者医，而可据者恃乎理。极精以穷变必本见微知着之旨，就形而求
理尤赖慎思明辨之功，是以疾在腠理扁鹊论其易治，病居膏肓秦缓知其难效。若夫河内出蛇之奇，海陵走獭之变，
伯宗之徙痈于柳，秋夫之针鬼于茅，要皆病之变者，亦即医之精也。唯能神而明之，自可习而化之耳。
医道一端，茫无涯 ，始于黄岐，圣于仲景，递演相传，名家辈出，撰述千百，阐发靡遗。降及今日，斯道
凌夷，或剽窃肤辞，或拘泥古法，偶阅本草，粗记成方，既盲于心，复昧于目，本以活人之术，转为杀人之具，
吁可叹也，亦可畏也。闽侯陈君守真，今之知名医也，兹以所着《儿科萃精》一书，不弃浅陋而来求序于余，余
不敏黍长卫生职司锁钥，长城日坏， 焉忧之，正欲领导群伦同遵正轨，务期挽救民生咸登寿域，方在整理之中，
猝遇济世之筏，披阅再四，喜慰无量。窃爱其命名儿科独具只眼，题曰萃精别有会心，融化圣经贤训，吸其精华，
采取名言要诀，倾其糟粕，深具得医之意，犹善察脉之真，择焉既精，语焉亦详，何异龙宫之获，宁非金匮之钞。
行见苏耽救疫，常满橘井之泉；将使董奉赈贫，偏多杏林之树。陆宣公道在活人，范文正志在济众，余知斯书之
出也或莫非其意也欤，是为序。
民国十八年十二月朔日汉口特别市卫生局长李博仁序
天下的事物中，变化最复杂的是疾病，而判断病情则依赖于对形体症状的观察；医学最为精妙，而其依据则在于医理。要达到极致的精微以穷尽疾病的变数，必须以“见微知著”（从细微的迹象推知事物的本质和发展）为宗旨；在观察形体的基础上探求医理，尤其依赖审慎思考、明辨事理的功夫。因此，当病邪尚在皮肤纹理之间时，扁鹊便论述其容易治疗；当病邪深入膏肓（心尖脂肪与膈膜之间的部位，喻指病位深重难治），秦缓（即医缓）便知道它难以见效。至于像河内出现蛇的奇异现象、海陵走獭的病变，伯宗将痈疽转移到柳树上，秋夫针刺鬼怪于茅草中的故事，这些虽然属于疾病变化的奇闻，但也体现了医术的精妙。只有能够神妙地领悟并阐明医道，自然可以学习并化用这些道理。
医学这一领域，浩瀚无涯，始于黄帝和岐伯（传说中医学的始祖），由张仲景达到圣境，代代演变相传，名家辈出，著作千百部，阐发医理毫无遗漏。到了今天，这门学问日渐衰微，有人剽窃肤浅的言辞，有人拘泥于古法，偶尔翻阅《本草》，粗略记住现成的方子，既在心智上盲目，又在见识上昏昧。本是用来救活人的技术，却变成了杀人的工具，真是令人叹息，也令人畏惧啊。
闽侯人陈守真君，是当今知名的医生。他将自己所著的《儿科萃精》一书，不嫌弃我浅薄陋劣，来请求我为之作序。我才能低下，虽长期担任卫生行政职务，掌管关键事务，但如同长城日益崩坏，我深感忧虑。我正欲领导众人共同遵循正轨，务必期望挽救民生，使大家都能进入长寿的境界，目前正处于整理规划之中，突然遇到了这艘济世的方舟，反复阅读多次，欣喜欣慰之情无法言表。我私下喜爱其命名“儿科”独具慧眼，题名为“萃精”别有会心，融汇了经典圣贤的训诫，吸取其精华，采纳名言要诀，倾吐其糟粕，深得医学的真意，犹如善于洞察脉象的真谛，选择既精当，论述也详尽，这与在龙宫获得珍宝有何不同？难道不是金匮（古代收藏重要文献的地方）中的抄录吗？
由此可见，苏耽（传说中药农）救疫、常璩（或指常山）橘井泉香的故事将会重现；将使董奉（东汉名医，种杏林）救济贫苦，杏林之树更加繁茂。陆宣公（陆贽）的道义在于救人，范文正（范仲淹）的志向在于救济大众，我知道这本书的出版，或许无不体现着这种心意吧。这就是序言。
民国十八年十二月一日，汉口特别市卫生局长李博仁 作序
Among all affairs in the world, diseases are the most complex and variable, yet their manifestation relies on physical signs; medicine is the most subtle and profound, yet its foundation rests upon medical principles. To attain ultimate precision and exhaustively understand variations, one must adhere to the principle of "perceiving the significant from the minute" (inferring the nature and development of things from subtle clues). Seeking principles based on physical forms particularly requires the effort of prudent reflection and clear discrimination. Therefore, when a pathogen resides in the skin and hair follicles (the superficial layer), Bian Que discussed its ease of treatment; when a disease occupies the *gaohuang* (a deep anatomical region between the heart diaphragm, implying a severe and difficult-to-treat condition), Qin Huan knew it would be hard to effect a cure. As for the extraordinary occurrences such as snakes appearing in Henei, otters walking in Hailing, Bo Zong transferring carbuncles to willow trees, and Qiufu needling ghosts in thatch, these are indeed examples of disease variations, but they also reflect the subtlety of medicine. Only by divinely comprehending and illuminating these can one naturally learn and transform them.
The medical path is boundless, beginning with Huangdi (Yellow Emperor) and Qibo, reaching sainthood with Zhang Zhongjing, passed down through generations, producing numerous famous masters, with thousands of writings elucidating theories without omission. Descending to the present day, this way has declined. Some plagiarize superficial words, others stick rigidly to ancient methods; having casually read the *Bencao* (Materia Medica) and roughly memorized established prescriptions, they are blind in mind and obscure in vision. What was originally an art to save lives has turned into an instrument of killing. Alas, this is both sigh-worthy and fearful.
Chen Shouzhen of Minhou is a renowned physician today. He presented his work, *Erke Cuijing* (Essence Collection of Pediatrics), not disdainful of my shallowness, seeking a preface from me. Though I am untalented, having long served in health administration and holding key responsibilities, seeing the Great Wall daily crumbling, I worry deeply. I intend to lead the masses to follow the correct path, striving to rescue the people's livelihood and ensure everyone enters the realm of longevity. While I am in the midst of organizing these efforts, suddenly encountering this raft for saving the world, I have read it repeatedly, feeling immeasurable joy and comfort. I privately appreciate that naming it "Pediatrics" shows unique insight, and titling it "Cuijing" (Gathering Essence) reveals special understanding. It melts classical sage teachings, absorbing their essence, adopting famous quotes and key instructions, while discarding the dregs. It deeply embodies the true meaning of medicine, akin to truly observing pulse diagnosis. Having selected with precision, the language is also detailed. How is this different from obtaining treasures in the Dragon Palace? Is it not a copy from the Golden Cabinet (ancient repository of important texts)?
It is foreseeable that the stories of Su Dan curing epidemics and Chang Qu's well of orange bark will reappear; it will make Dong Feng's apricot grove more abundant for aiding the poor. Lu Xiangong's (Lu Zhi) righteousness lies in saving people, Fan Wenzheng's (Fan Zhongyan) ambition lies in benefiting the multitude. I know that the publication of this book likely reflects these intentions. Thus, the preface.
On the first day of the twelfth month of the 18th year of the Republic of China, Li Boren, Director of the Health Bureau of Hankou Special Municipality, wrote the preface.