凡非风而有兼证者，则通经佐使之法本不可废。盖其脉络不通，皆由血气，血气兼证，
各有所因∶如因于风者必闭郁。因于寒者必凝涩。因于热者必干涸。因于湿者必壅滞。因于
虚者必不营运。诸如此者，皆能阻塞经络，此佐使之法所以亦有不同也。凡风闭者，宜散而
通之，如麻黄、桂枝、柴胡、羌活、细辛、白芷之属是也。寒凝者，宜热而通之，如葱、椒
、桂、附、干姜之属是也。热燥者，宜凉而通之，如芩、连、栀、柏、石膏、知母之属是也
。湿滞者，宜温利而通之，如苍术、浓朴、茵陈、萆 、五苓之属是也。血滞者，宜活而通
之，如芎、归、牛膝、红花、桃仁、大黄、芒硝之属是也。气滞者，宜行而通之，如木香、
香附、乌、沉、枳、藿之属是也。痰滞者，宜开而通之，如南星、半夏、牛黄、天竺黄、朱
砂、海石、玄明粉之属是也。气血虚弱者，宜温补而通之，如参、 、归、术、熟地、枸杞
、杜仲、牛膝之属是也。凡此通经之法，若乎尽矣，然虚实之异犹当察焉。盖通实者，各从
其类。使无实邪，而妄用通药，则必伤元气，反为害矣。通虚者，则或阴或阳，尤当知其要
也。如参 所以补气。而气虚之甚者，非姜附之佐，必不能追散失之元阳；归地所以补精血
，而阴虚之极者，非桂附之引，亦不能复无根之生气。寒邪在经，而客强主弱，非桂附之勇
则血脉不行，寒邪不去。痰湿在中而土寒水泛者，非姜附之暖，则脾肾不健，痰湿不除。此
通经之法，大都实者可用寒凉，虚者必宜温热也。但附子之性，刚勇而热，凡阴虚水亏而多
热多燥者，自非所宜；若无燥热，但涉阳虚，而诸药有不及者，非此不能达也。古人云∶附
子与酒同功，义可知矣。今人谓附子有毒，多不敢用，不知制用得宜，何毒之有，此诚奇品
，其毋忽之。
凡是非风病（中风类疾病）兼有其他证候的，那么运用通经佐使药的方法本来是不可废弃的。因为经络脉络不通，都是由血气问题引起的，而血气的兼夹证候，各自有不同的成因：如果是因为风邪导致的，必然导致气机闭郁；如果是因为寒邪导致的，必然导致气血凝滞涩痛；如果是因为热邪导致的，必然导致津液干涸；如果是因为湿邪导致的，必然导致气机壅塞停滞；如果是因为虚损导致的，必然导致气血运行无力。诸如此类的情况，都能阻塞经络，这就是为什么使用佐使药的方法也各不相同的原因。
凡是风邪闭阻的，适宜用发散药物来疏通，比如麻黄、桂枝、柴胡、羌活、细辛、白芷这一类药物。寒邪凝滞的，适宜用温热药物来疏通，比如葱白、花椒、肉桂、附子、干姜这一类药物。热邪燥结的，适宜用凉性药物来疏通，比如黄芩、黄连、栀子、黄柏、石膏、知母这一类药物。湿邪停滞的，适宜用温燥利湿药物来疏通，比如苍术、厚朴、茵陈、萆薢、五苓散这一类药物。血行瘀滞的，适宜用活血药物来疏通，比如川芎、当归、牛膝、红花、桃仁、大黄、芒硝这一类药物。气机阻滞的，适宜用行气药物来疏通，比如木香、香附、乌药、沉香、枳实、藿香这一类药物。痰浊停滞的，适宜用化痰开窍药物来疏通，比如天南星、半夏、牛黄、天竺黄、朱砂、海浮石、玄明粉这一类药物。气血虚弱的，适宜用温补药物来疏通，比如人参、黄芪、当归、白术、熟地黄、枸杞子、杜仲、牛膝这一类药物。
以上这些通经的方法，似乎已经详尽无遗了，然而虚实性质的差异仍然应当仔细辨别。对于实证进行疏通，要顺应其病邪的性质；如果没有实邪，却胡乱使用通泻药物，必然会损伤元气，反而造成危害。对于虚证进行疏通，则或针对阴或针对阳，尤其应当掌握关键要点。比如人参、黄芪用来补气，但是气虚非常严重的，如果没有干姜、附子的辅助，一定不能追回散失的元阳；当归、熟地用来补益精血，但是阴虚到了极点的，如果没有肉桂、附子的引导，也不能恢复无根的生气。寒邪在经络中，且客邪强盛而正气虚弱，如果没有肉桂、附子的刚猛之力，血脉就不能通行，寒邪就不能去除。痰湿在中焦，且脾土寒冷水湿泛滥的，如果没有干姜、附子的温暖作用，那么脾肾就不强健，痰湿就不能清除。这些通经的方法，大都是实证可以用寒凉药，虚证必须宜用温热药。
只是附子的药性，刚猛勇烈且大热，凡是阴虚水亏而多热多燥的人，自然不是它适用的对象；如果没有燥热，只是涉及阳虚，而且其他药物力所不及的时候，不用附子是不能达到的。古人说：附子和酒的功效相似，其中的道理就可以知道了。现在的人认为附子有毒，大多不敢使用，不知道如果炮制和使用得当，有什么毒性呢？这确实是奇特的珍品，不要轻视它。
In cases of non-wind diseases (stroke-like disorders) accompanied by concurrent syndromes, the method of using adjuvant and guiding herbs to unblock the meridians should not be discarded. This is because the obstruction of meridian collaterals stems from issues with Blood and Qi. The concurrent syndromes of Blood and Qi have various causes: if caused by Wind, there must be closure and depression; if caused by Cold, there must be coagulation and stagnation; if caused by Heat, there must be drying and depletion; if caused by Dampness, there must be congestion and stasis; if caused by Deficiency, there must be failure of circulation. All such conditions can block the meridians, which is why the methods for using adjuvants and guides differ accordingly.
For cases of Wind closure, it is appropriate to use dispersing agents to promote flow, such as Ephedrae Herba (Mahuang), Cinnamomi Ramulus (Guizhi), Bupleuri Radix (Chaihu), Notopterygii Rhizoma et Radix (Qianghuo), Asari Radix et Rhizoma (Xixin), and Angelicae Dahuricae Radix (Baizhi). For Cold coagulation, it is appropriate to use hot agents to promote flow, such as Allii Fistulosi Bulbus (Congbai), Zanthoxyli Pericarpium (Jiaopao), Cinnamomi Cortex (Rougui), Aconiti Lateralis Radix Praeparata (Fuzi), and Zingiberis Rhizoma (Ganjiang). For Heat dryness, it is appropriate to use cool agents to promote flow, such as Scutellariae Radix (Huangqin), Coptidis Rhizoma (Huanglian), Gardeniae Fructus (Zhizi), Phellodendri Cortex (Huangbai), Gypsum Fibrosum (Shigao), and Anemarrhenae Rhizoma (Zhimu). For Dampness stasis, it is appropriate to use warm and diuretic agents to promote flow, such as Atractylodis Macrocephalae Rhizoma (Cangzhu), Magnoliae Officinalis Cortex (Houpo), Yinchenhao, Dioscoreae Hypoglaucae Rhizoma (Bixie), and Wuling San (Five-Ling Powder). For Blood stasis, it is appropriate to use blood-activating agents to promote flow, such as Chuanxiong Rhizome (Chuanxiong), Angelicae Sinensis Radix (Danggui), Achyranthis Bidentatae Radix (Niuxi), Carthami Flos (Honghua), Persicae Semen (Taoren), Rheum Palmatum Radix et Rhizoma (Dahuang), and Mirabilite (Mangxiao). For Qi stagnation, it is appropriate to use Qi-moving agents to promote flow, such as Aucklandiae Radix (Muxiang), Cyperi Rhizoma (Xiangfu), Linderae Fructus (Wuyao), Aquilariae Lignum Resinatum (Chenxiang), Aurantii Fructus Immaturus (Zhishi), and Agastaches Herba (Huoxiang). For Phlegm stasis, it is appropriate to use phlegm-resolving and orifice-opening agents to promote flow, such as Pinelliae Tuber Preparatum (Nanxing), Pinelliae Tuber (Banxia), Bos Calculus (Niuhuang), Bambusae Spica (Tianzhuhuang), Cinnabaris (Zhusha), Lithostes (Haishi), and Natrii Sulfas Exsiccatus (Xuanmingfen). For Qi and Blood deficiency, it is appropriate to use warming and tonifying agents to promote flow, such as Ginseng Radix et Rhizoma (Renshen), Astragali Radix (Huangqi), Angelicae Sinensis Radix (Danggui), Atractylodis Macrocephalae Rhizoma (Baizhu), Rehmanniae Radix Praeparata (Shudihuang), Lycii Fructus (Gouqi), Eucommiae Cortex (Duzhong), and Achyranthis Bidentatae Radix (Niuxi).
These methods for unblocking the meridians seem exhaustive, yet one must still carefully distinguish between Excess and Deficiency. To treat Excess, one follows the nature of the pathogen; without Excess pathogens, the reckless use of purgative/unblocking drugs will inevitably damage Yuan Qi (Original Qi), causing harm instead. To treat Deficiency, whether targeting Yin or Yang, one must grasp the key principles. For instance, Ginseng Radix et Rhizoma (Renshen) and Astragali Radix (Huangqi) are used to tonify Qi; however, in severe Qi deficiency, without the assistance of Zingiberis Rhizoma (Ganjiang) and Aconiti Lateralis Radix Praeparata (Fuzi), it is impossible to retrieve scattered Yuan Yang (Original Yang). Angelicae Sinensis Radix (Danggui) and Rehmanniae Radix Praeparata (Shudihuang) are used to tonify Essence and Blood; however, in extreme Yin deficiency, without the guidance of Cinnamomi Cortex (Rougui) and Aconiti Lateralis Radix Praeparata (Fuzi), it is impossible to restore the life force rooted in nothingness. When Cold pathogens reside in the meridians and the exogenous pathogen is strong while the host is weak, without the bold action of Cinnamomi Cortex (Rougui) and Aconiti Lateralis Radix Praeparata (Fuzi), the blood vessels cannot circulate, and the Cold pathogens cannot be expelled. When Phlegm and Dampness are in the Middle Jiao and the Earth element is cold with Water overflowing, without the warmth of Zingiberis Rhizoma (Ganjiang) and Aconiti Lateralis Radix Praeparata (Fuzi), the Spleen and Kidney will not be robust, and the Phlegm and Dampness will not be eliminated. Generally, these methods for unblocking meridians indicate that Excess patterns may use Cool/Cold herbs, while Deficiency patterns must use Warm/Hot herbs.
However, the nature of Aconiti Lateralis Radix Praeparata (Fuzi) is bold, fierce, and hot. It is naturally unsuitable for those with Yin deficiency and fluid depletion who suffer from much Heat and dryness. If there is no dryness or heat, but only Yang deficiency, and other herbs are insufficient, Fuzi is indispensable. The ancients said that Fuzi shares the same efficacy as wine, the meaning of which is clear. Modern people believe Fuzi is toxic and dare not use it, unaware that if processed and administered properly, what toxicity could there be? This is indeed a unique treasure; do not neglect it.