大黄（二两） 水蛭（二十枚） 虻虫（二十五枚） 桃仁（二十五枚）
上四味杵分为四丸以水一升煎一丸取七合服之 时当下血若不下者连服
伤寒中风一日太阳二日阳明三日少阳四日太阴五日少阴六日厥阴日传一经六日而遍此定数也诸所谓不传者言不传脏
腑并非不传经络伤寒惟传经一事讹谬百出道理未为难解自是医法不明耳
太凡病若发汗若吐若下若亡血若亡津液阴阳自和者必自愈
发汗吐下亡血亡津不无损伤而邪退正复阴阳调和不至偏胜必自愈也病非阴胜则阳胜和而不偏所以自愈
太阳头痛至七日以上自愈者以行其经尽故也若欲再作经者针足阳明使经不传则愈
七日以上自愈者即发于阳者七日愈之谓六日六经俱尽故至七日自愈素问热论所谓七日太阳病衰头痛少愈也阳莫盛于
阳明阳明之经阳郁热盛则六经俱遍而郁热未衰虽不入腑而经邪犹旺不肯外发势必再传六经针足阳明之经泻其郁热则经不
再传自然愈矣
风家表解而不了了者十二日愈
素问热论七日巨阳病衰头痛少愈八日阳明病衰身热少愈九日少阳病衰耳聋微闻十日太阴病衰腹减如故则思饮食十一
日少阴病衰渴止不满舌干已而嚏十二日厥阴病衰囊纵少腹微下大气皆去病已愈矣中风表解自当即愈设不了了则余热未尽
俟至十二日经邪尽解无不愈矣风寒与温热之病里气不同而其经脉之络属伤受之日期无有不同也
大黄（二两） 水蛭（二十枚） 虻虫（二十五枚） 桃仁（二十五枚）
将以上四味药捣碎研细，分成四丸。用水一升煎煮其中一丸，取汁七合服用。此时应当有瘀血排出，如果未排出，则连续服用。
伤寒或中风，第一天传太阳经，第二天传阳明经，第三天传少阳经，第四天传太阴经，第五天传少阴经，第六天传厥阴经，每天传一经，六天传遍六经，这是固定的规律。所谓“不传”，是指不传入脏腑，并非指不传入经络。伤寒唯独在传经这一件事上谬误百出，道理其实并不难理解，只是因为医理不明罢了。
大凡疾病，无论是发汗、催吐、泻下，还是失血、津液亏损，只要阴阳能够自行调和，必定自愈。
发汗、催吐、泻下导致失血和津液亏损，虽然难免造成损伤，但只要邪气退去、正气恢复，阴阳调和且没有偏胜，必定自愈。疾病如果不是阴胜阳衰，就是阳胜阴衰，只有平和而不偏颇，所以才能自愈。
太阳头痛，到了七天以上会自愈，是因为病邪在经脉中运行已尽的缘故。如果想要防止它再次传变进入下一经，可以针刺足阳明经的穴位，使病邪不再传变，这样就会痊愈。
七天以上自愈，就是指“发于阳者七日愈”的说法。因为六天六经都已传遍，所以到第七天自愈。《素问·热论》所说：“第七天太阳病衰退，头痛减轻。”阳气没有比阳明经更盛的，如果阳明经阳气郁结而热盛，那么六经都会遍布邪气，且郁热未消，即使病邪没有入腑，但经络中的邪气依然旺盛，不肯向外发散，势必会再次传遍六经。此时针刺足阳明经以泻除郁热，病邪就不再传变，自然就会痊愈。
患风病的人，表证解除后如果仍然感觉身体不适（神志不清爽），需要十二天才能痊愈。
《素问·热论》说：第七天巨阳（太阳）病衰退，头痛减轻；第八天阳明病衰退，身热减轻；第九天少阳病衰退，耳聋稍有好转；第十天太阴病衰退，腹部胀满消退，像以前一样，开始想吃饭；第十一天少阴病衰退，口渴停止，腹胀消失，舌干好转并出现打喷嚏；第十二天厥阴病衰退，阴囊松弛，小腹轻微舒适，大气（邪气）都去除，病就好了。中风患者表证解除后本应立即痊愈，如果仍然感觉身体不适，说明余热未尽，等到第十二天经络中的邪气完全解除，没有不痊愈的。风寒与温热病的里气不同，但它们经脉的络属关系及受邪日期是没有不同的。
Da Huang (Rhei Radix et Rhizoma) (2 liang), Shui Zhi (Hirudo) (20 pieces), Meng Chong (Ophryogenia) (25 pieces), Tao Ren (Persicae Semen).
The above four herbs are pounded and divided into four pills. One pill is decocted in one sheng of water until the volume reduces to seven he, then taken orally. At this time, blood stasis should be discharged; if not, continue taking it.
In Shanghan (Cold Damage) or Fengzhong (Wind Strike), on the first day, the disease transmits to the Taiyang (Greater Yang) meridian; on the second day, to the Yangming (Bright Yang) meridian; on the third day, to the Shaoyang (Lesser Yang) meridian; on the fourth day, to the Taiyin (Greater Yin) meridian; on the fifth day, to the Shaoyin (Lesser Yin) meridian; and on the sixth day, to the Jueyin (Terminal Yin) meridian. It transmits one meridian per day and completes the cycle through all six meridians in six days; this is a fixed number. The so-called "non-transmission" refers to non-transmission to the Zang-Fu organs (viscera and bowels), not that it does not transmit to the meridians. Regarding the transmission of meridians in Shanghan, there have been countless errors and misconceptions. The principle is actually not difficult to understand; these errors arise merely from a lack of clarity in medical theory.
Generally speaking, whether due to sweating, vomiting, purging, loss of blood, or depletion of body fluids, if Yin and Yang achieve self-harmony, the disease will necessarily heal itself.
Sweating, vomiting, and purging leading to loss of blood and body fluids inevitably cause damage. However, as long as the pathogenic factor recedes and the healthy qi recovers, with Yin and Yang harmonized and without excess or deficiency, the disease will necessarily heal itself. If a disease is not characterized by Yin excess overcoming Yang, then it is Yang excess overcoming Yin. Only when it is balanced and unbiased can it heal itself.
Headache due to Taiyang disease will heal itself after seven days because the pathogenic factor has exhausted its course within the meridian. If one wishes to prevent further transmission to the next meridian, needling the Foot-Yangming meridian can stop the transmission, resulting in recovery.
Healing after seven days refers to the statement "those originating in Yang heal in seven days." Since the six meridians are fully traversed in six days, healing occurs on the seventh day. As stated in *Suwen: Re Lun* (Plain Questions: Treatise on Heat): "On the seventh day, the Taiyang disease declines, and the headache lessens." Yang energy is most abundant in the Yangming meridian. If Yangqi stagnates and heat becomes excessive in the Yangming meridian, the pathogenic factor pervades all six meridians. Even if the pathogen does not enter the Fu organs, the exogenous pathogen in the meridians remains vigorous and refuses to dissipate outward, inevitably transmitting again through the six meridians. Needling the Foot-Yangming meridian to drain the stagnant heat prevents further transmission, leading to natural recovery.
Patients suffering from Wind diseases, after the exterior syndrome resolves but still feel unwell (lacking clarity of spirit), will heal after twelve days.
*Suwen: Re Lun* states: On the seventh day, the JuYang (Taiyang) disease declines, and the headache lessens; on the eighth day, the Yangming disease declines, and the body heat lessens; on the ninth day, the Shaoyang disease declines, and deafness slightly improves; on the tenth day, the Taiyin disease declines, abdominal distension subsides as before, and appetite returns; on the eleventh day, the Shaoyin disease declines, thirst stops, fullness disappears, dry tongue improves, and sneezing occurs; on the twelfth day, the Jueyin disease declines, the scrotum relaxes, the lower abdomen feels slightly comfortable, the vital qi (pathogenic factor) is expelled, and the disease heals. In Fengzhong (Wind Strike), once the exterior syndrome resolves, recovery should be immediate. If the patient still feels unwell, it indicates that residual heat remains. By the twelfth day, when the meridian pathogens are completely resolved, recovery is inevitable. Although the interior qi differs between Cold-Wind and Warm-Heat diseases, their meridian connections and the timeline of pathogen acquisition remain the same.