戴人之常溪也，雪中冒寒，入浴重感风寒，遂病不起。但使煎通圣散单服之，一、二
日不食，惟渴饮水，亦不多饮，时时使人捶其股，按其腹，凡三、四日不食，日饮水一、二十度
，至六日，有谵语妄见。以调胃承气汤下之，汗出而愈。戴人常谓人曰∶伤寒勿妄用药，惟
饮水最为妙药，但不可使之伤，常令揉散，乃大佳耳！至六、七日，见有下证，方可下之，
有变异哉？奈何医者禁人饮水，至有渴死者。病患若不渴，强与饮水，亦不肯饮耳！戴人初
病时，鼻塞声重头痛，小便如灰淋汁，及服调胃承气一两半，觉欲呕状，探而出之，汗出
然，须臾下五、六行，大汗一日乃瘳。当日饮冰水时，水下则痰出，约一、二
碗，痰即是病也，痰去则病去也。戴人时年六十一。
戴人女僮，足有寒疡，俗云冻疮。戴人令服舟车丸、浚川散，大下之，其疮遂愈
。人或疑之。戴人曰∶心火降则寒消，何疑之有？
一妇人，心下脐上结硬如斗，按之如石。人皆作病胎，针灸毒药，祷祈无数，如
捕风然。一日，戴人见之曰∶此寒痰。诊其两手，寸脉皆沉，非寒痰而何？以瓜蒂散吐之，
连吐六、七升，其块立消过半。俟数日后再吐之，其涎沫类鸡黄，腥臭特殊，约二、三升。
凡如此者三。后以人参调中汤、五苓散调之，腹已平矣。
戴人（张从正的号）常去一条小溪，曾在雪中冒着严寒，进入浴池后又感受了风寒，于是病重不起。只需让他煎服防风通圣散单独服用，一两天内不进食，只是口渴时喝水，但也不多喝，时常让人捶打他的大腿，按压他的腹部，总共三四天不进食，每天喝水一二十次，到了第六天，出现胡言乱语和幻觉。用调胃承气汤攻下，出汗后痊愈。戴人常对人说：患伤寒不要胡乱用药，只有饮水是最妙的药，但不可让水停滞伤身，常令揉散，这才是最好的！到了六七天，见到有可下的证候，才可以攻下，难道会有变异吗？奈何医生禁止病人饮水，以至于有渴死的。病人如果不渴，强行给饮水，他也不肯喝啊！戴人初病时，鼻塞声音沉重头痛，小便像灰淋的汁液，等到服用调胃承气汤一两半，感觉想呕吐，探吐出来，汗出淋漓，一会儿大便五六行，大汗一天后病愈。当天喝冰水时，水下去则痰出来，大约一两只碗，痰就是病邪，痰去则病去啊。戴人当时六十一岁。
戴人的女仆，脚上有寒性疮疡，俗称冻疮。戴人让她服用舟车丸、浚川散，大泻之下，她的疮便痊愈了。有人对此感到疑惑。戴人说：心火下降则寒气消除，有什么好疑惑的？
有一位妇人，心窝到脐上结块坚硬如斗，按之如石头。人们都当作妊娠胎病，针灸毒药，祈祷无数，如同捕风一样。一天，戴人见到她说：这是寒痰。诊察她的两手，寸脉皆沉，不是寒痰是什么？用瓜蒂散催吐，连续吐出六七升，那个肿块立刻消减了一半。等几天后再吐一次，她吐出的涎沫像鸡黄，腥臭特殊，大约二三升。像这样的情况共进行了三次。后来用人参调中汤、五苓散调理，腹部已经平复了。
Dairen (Zhang Congzheng's courtesy name) often visited a small stream. Once, braving the cold in the snow, he entered a bathhouse and subsequently contracted wind-cold again, leading to a severe illness that seemed incurable. It was only necessary to decoct and administer Fangfeng Tongsheng San (Wind-Dispersing Universal Benefit Decoction) alone. For one or two days, he ate nothing, drinking only when thirsty, but not excessively. People were instructed to frequently beat his thighs and press his abdomen. After three or four days of fasting, drinking water twenty times a day, on the sixth day, he developed delirium and visual hallucinations. He was purged with Tiaowei Chengqi Tang (Stomach-Regulating Downward-Pouring Decoction), sweated, and recovered. Dairen often told people: "When suffering from Shanghan (Cold Damage), do not use drugs recklessly; drinking water is the best medicine, but it must not stagnate and injure the body. Frequently rubbing and dispersing it is excellent! Only after six or seven days, if signs of interior excess requiring purgation appear, should one purge. Why would there be variations? Alas, physicians forbid patients from drinking water, resulting in deaths from thirst. If a patient is not thirsty, forcing them to drink will result in refusal." When Dairen first fell ill, he had nasal congestion, heavy voice, and headache, and his urine resembled the fluid of Hui Lin (Ashy Strangury). After taking 1.5 liang of Tiaowei Chengqi Tang, he felt nauseous, induced vomiting, sweated profusely, and had five or six bowel movements shortly after. A massive sweat occurred, and he recovered within a day. On that day, when drinking ice water, phlegm emerged as the water went down, about one or two bowls. Phlegm is the pathogen; when phlegm leaves, the disease leaves. Dairen was sixty-one years old at the time.
Dairen's female servant had a cold sore on her foot, commonly known as frostbite. Dairen prescribed Zhouche Wan (Boat Cart Pill) and Xunchuan San (River-Clearing Powder) to induce severe purgation, and her sore healed. Some people doubted this approach. Dairen said, "When Heart Fire descends, cold dissipates. What is there to doubt?"
A woman had a hard mass from the epigastrium to above the umbilicus, as hard as a beanbag and stone-like upon palpation. Others treated it as a pregnancy tumor, using acupuncture, toxic drugs, and countless prayers, futilely chasing the wind. One day, Dairen saw her and said, "This is Cold Phlegm." Palpating both wrists, he found the Cun (inch) pulses deep. How could it not be Cold Phlegm? He administered Gengdi San (Melon Seed Powder) to induce vomiting, expelling six or seven sheng continuously. The mass immediately reduced by more than half. After a few days, he vomited again. The expelled saliva and foam resembled chicken yolk, with a peculiar fishy and foul odor, totaling about two or three sheng. This process was repeated three times. Later, he regulated her condition with Renshen Tiaozhong Tang (Ginseng Middle-Regulating Decoction) and Wuling San (Five-Ling Powder), and her abdomen became flat.