予始于攸宁堂中，与秦先生周旋，见其简易古朴，坦然帖适，而议论斩斩，不务为影响
迎合，既悚然重之。进而探其底蕴，则浩乎若秋水之时，至决川灌河而四达也。涣乎若春
冰
某某者如彼而又愈矣。遂爱焉而乐与交。予室抱沉 二载，几疑难起，秦先生为予处方，投
之立效，第辍则旋作，今服药已数斤许矣，疾亦去八九矣。先生固见之真，予亦自谓信之专
也。秦先生故业儒，其洋洋洒洒之机，间流露于口颊，而是编也，研精殚思，条分缕析，绝
不欲炫其文采。秦子曰∶医虽活人事乎？终小道耳，乌用震而惊之耶。是编也，使初习其事
者，视之了然，若指诸掌；即冥心高契者，玩轩岐之妙言，而未归实地，虽口以为笙蹄，心
未尝不于此收鱼兔也。吾知利于物而己，奚缘饰为，昔许学士抱技通神，或劝之立言，笑而
应曰，若谓书真有用耶，受椟而还珠者比比也。吾悉其奇以告人，未获吾益，且加损焉，故
曰托诸空言，不如见诸实事，俯仰之间，皆陈迹也。达哉，学士之论乎，五方风气不齐，古
今运气大别，朱、张、刘、李四家之言，善用之，亦各极其胜，专泥之则不能无偏者，皆以
为大中至正，百世无弊之道，而不知有随时之义在其中也。是编也，就证而审因，就因而审
脉，就脉而审治，各求其故，无成见之设，原不过补缀前人，若谓立言，则吾岂敢，先生为
予言，予嘿然而受其教，退而思之，其真进乎技，不矜乎名者耶。故既为之于前，复为之
述于后，诚重之也，诚爱之也。
康熙四十七年戊子蕤宾朔日年家眷晚弟顾冒朝佩声氏拜题。
我起初在攸宁堂中，与秦先生交往，见到他的医理简易古朴，坦然舒适，而且议论果断，不刻意迎合世俗，这让我肃然起敬。进而探究他的医学底蕴，那气势浩大如同秋水涨满之时，决开川流灌注黄河而四通八达；又涣散开来如同春冰消融，那些像他一样的人也都痊愈了。于是我爱慕他并乐于与他结交。我家中有人患沉疴两年，几乎疑难杂症丛生，秦先生为我开具处方，服药后立即见效，只是停药后随即复发，如今服药已数斤左右，疾病也去除了八九成。先生确实见解真切，我也自认为信任专一。
秦先生原本从事儒业，他那滔滔不绝的机锋妙语，偶尔流露于言谈之间，但这本著作，他钻研精微、耗尽思虑，条理分明地分析，绝不想炫耀自己的文采。秦先生说：“医学虽然能救活人事，终究是‘小道’罢了，何必用惊世骇俗来震慑人呢？”这本书，让初学医术的人，看了就能明白，如同指着手掌看东西一样清楚；即使是潜心领悟、与古人精神契合的高人，玩味轩岐（黄帝与岐伯）的妙言，却未回归实地应用，虽然嘴上把经典当作捕鱼的筌和捉兔的蹄（比喻工具），心里却无不从这里收获真知。我知道这书利于实用而已，何须修饰？过去许学士拥有通神的技艺，有人劝他著书立说，他笑着回答说：“如果说书真的有用吗？那种得到装书的匣子却归还珍珠（舍本逐末）的人比比皆是。”我把我的奇术告诉别人，不仅没获得益处，反而有所减损，所以说寄托于空泛言论，不如体现在实际事务中，俯仰之间，都成了陈迹。许学士的论断真是通达啊！五方的风气不同，古今的运气差异很大，朱、张、刘、李四家的学说，善于运用它，也能各自发挥其优势，如果专门拘泥于它，则难免有偏颇。大家都认为这是大中至正、百世无弊的道理，却不知道其中包含有随时变化的义理。这本书，针对病症审查病因，针对病因审查脉象，针对脉象审查治法，各求其根本，没有固定的成见设立，原本不过是补缀前人的不足，如果说要创立学说，那我岂敢当？先生对我说了这些，我沉默地接受了他的教诲，退下来思考，他确实是精进于技艺，而不矜持于名声啊。所以我在前面为他作序，又在后面为他记述，确实是重视他，确实是喜爱他。
康熙四十七年戊子年蕤宾朔日（农历五月一日），年家眷晚弟顾冒朝佩声氏拜题。
I first interacted with Master Qin in the Youning Hall, observing that his medical principles were simple and unadorned, calm and comfortable, and his discussions were decisive, not striving to flatter or conform to trends. This filled me with awe and respect. As I delved deeper into his profound understanding, it seemed vast as autumn waters in flood, bursting from streams and pouring into rivers, reaching in all directions; and dissipating like spring ice melting, where those similar to him also recovered. Thus, I admired him and delighted in associating with him. A severe chronic illness (Chenji) had afflicted my household for two years, presenting nearly insurmountable difficulties. Master Qin prescribed a formula for me; upon administration, immediate efficacy was observed. However, symptoms recurred upon cessation of medication. Having consumed several jin of medicine now, the disease has been alleviated by eight or nine parts. Master Qin indeed possesses true insight, and I consider myself to have held exclusive faith in him.
Master Qin originally pursued Confucian studies; his eloquent wit occasionally surfaced in conversation, yet this compilation reflects his meticulous research and exhaustive thought, analyzed item by item, without any desire to display literary flair. Master Qin stated: "Although medicine can save lives, it is ultimately a 'minor art'; why use shock and awe?" This book allows beginners to understand clearly, as if pointing at their palm; even those who meditate deeply and align with the ancients, playing with the subtle words of Xuanyuan and Qibo but failing to return to practical application, though regarding classics merely as tools (like fish traps or rabbit snares), will inevitably find spiritual sustenance here. I know it serves practical utility, what need for embellishment? In the past, Scholar Xu possessed divine skill; when advised to write, he laughed and replied, "If books are truly useful, there are countless cases of returning the pearl while keeping the box." Sharing my unique methods with others yielded no benefit and caused loss. Hence, it is said that empty words are inferior to concrete actions; within moments, everything becomes history. Scholar Xu's argument is indeed profound. The climates of the five regions differ, and the Qi-Yun (vital energy and luck) of ancient and modern times vary greatly. The theories of the four schools—Zhu, Zhang, Liu, and Li—if applied well, each achieves its excellence; but rigid adherence leads to bias. All regard these as the great central and upright path, flawless for generations, yet fail to realize the principle of adapting to changing times. This book examines causes based on symptoms, pulses based on causes, and treatments based on pulses, seeking the root without preconceived notions. It essentially supplements predecessors; claiming to establish new doctrines would be presumptuous. Master Qin taught me thus, which I accepted silently. Reflecting later, I see he advances in technique without boasting of fame. Therefore, I wrote before and narrate after, truly honoring and loving him.
Inscribed by Gu Maochao, courtesy name Peisheng, humble younger brother and family friend, on the first day of the fifth lunar month (Ruibin朔日) of the Wuzi year, the 47th year of the Kangxi reign.