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Any formula that belongs to resolving both exterior and interior simultaneously, combining warming and cooling, dispersing with bitter and acrid flavors, applying tonification and purgation together, calming recurrence and sequelae, and regulating Qi and Blood is called the Harmonizing Method (He Fa). The Harmonizing Method refers to compound formulas that treat both sides simultaneously, decomposing concurrent and complicated symptoms, as well as small or mild formulas that regulate recurrent conditions and sequelae. Warm-heat latent pathogens (Wen Re Fu Xie) initially emerge from within to the exterior, often triggered by a recent contraction of Wind-Cold, Summer-Heat, or Dampness. Among these, the onset of Warm diseases is mostly caused by Wind-Cold; the onset of Heat diseases is more severe when complicated by Summer-Heat and Dampness. Complications with Wind and Summer-Heat are Yang in nature and light in Qi, allowing latent pathogens to disperse easily; complications with Cold and Dampness are Yin in nature and suppressive in Qi, causing latent pathogens to stagnate and be difficult to reach. Therefore, some cases are suitable for simultaneous resolution of exterior and interior, while others are suitable for the combination of warming and cooling. Such diseases often transmit with complications, such as food retention, phlegm-fluids, water-dampness, and blood stasis, which bind with latent pathogens and obstruct the membrane networks in the chest, hypochondrium, epigastrium, and abdomen. This causes the latent pathogens to become depressed and unable to penetrate outward; if they cannot penetrate outward, how can they be resolved from the exterior? Whenever double-resolution methods fail, one must observe what pathogen is complicated, and add herbs for digesting food, resolving phlegm, draining water, and removing stasis into the double-resolution method. Only then will the efficacy be swift and the disease eliminated. Thus, treatment should employ the method of bitter-acrid dispersion. Furthermore, if there is deficiency of both Qi and Blood, and depletion of both Yin and Yang—as Wu Keyang described as "Four Damages and Four Insufficiencies"—and the patient contracts warm-heat latent pathogens again, it often results in internal collapse of healthy Qi and deeper penetration of pathogens; or there may be prior injury to Yin with independent hyperactivity of Yang. As stated in the *Neijing*, death occurs in warm diseases when healthy Qi is extremely deficient; this is such a case. Therefore, treatment should employ simultaneous tonification and purgation. Additionally, due to patients' lack of hygiene awareness and families' neglect of care, one often sees recurrences due to overexertion (Lao Fu), improper diet (Shi Fu), self-neglect (Zi Fu), or anger (Nu Fu); there are also cases where residual pathogens remain uncleaned, leading to successive sequelae due to lack of regulation or violation of taboos. Thus, treatment should calm recurrences and sequelae and regulate Qi and Blood, which is the crucial post-treatment method for the middle and late stages of warm-heat diseases. All these harmonizing methods, although named "Harmonizing," actually contain the intentions of sweating, purging, warming, clearing, digestion-promoting, and tonifying methods. These represent the subtle and miraculous infinite variations of the Harmonizing Method. Their strategies are detailed below:

1. Simultaneous Resolution of Exterior and Interior has approximately three principles:
First, releasing the muscle layer and clearing the interior, such as Baihu Jia Guizhi Tang (Cinnamon Twig Decoction plus White Tiger Decoction, from *Shanghan Lun*), Zhimu Jiemo Tang, Gegen Jupi Tang, Sanhuang Shigao Tang (Three Yellows and Gypsum Decoction, from *Waitai Miyao*), Shigao Daqing Tang (Gypsum and Saposhnikovia Decoction, from *Qianjin Fang*), Jiashan Sanhuang Shigao Tang, Zengsun Sanhuang Shigao Tang, Xinjia Maxing Shigan Tang, Zhichi Qinge Tang, etc.
Second, inducing sweating and promoting urination, such as Liutong Shenjie San (Six Miraculous Penetration Powder, from *Ju Fang*), Liangge San minus Mangxiao and Dahuang combined with Tiansan San, Liuyi Congchi Tang, Wuye Lugeng Tang, Ranzhao Tang, Huopo Xialing Tang, Xinding Dayin Yin, etc.
Third, releasing the exterior and attacking the interior, such as Shanfan Xiangchi Tang, Xu's Dahuang Tang, Beiji Heini Wan, Liangge San, Fangfeng Tongsheng San, Shuangjie San, Jiashan Fangfeng Tongsheng San, Zengsun Shuangjie San, Jiawei Liangge San, etc.
The severity varies, and urgency differs; use them flexibly according to symptoms. Based on my experience, for early-stage warm-heat diseases, regardless of Wind or Cold complication, floating or tight pulse, aversion to wind or cold, but with intense external heat, where treatment should focus on the exterior, generally use Shuangjie San with Congchi, or Liangge San minus Mangxiao and Dahuang with Congchi, to harmonize and resolve internal and external heat pathogens, achieving rapid results. If after sweating, there is no aversion to cold but aversion to heat, spontaneous sweating, delirium, constipation, dry throat, and abdominal fullness, with intense internal heat, where treatment should focus on the interior, urgently use Xu's Dahuang Tang to purge and harmonize, or use Ju Fang Liangge San or Jiawei Liangge San in large doses to reduce heat, preventing critical danger. After sweating or purging, if residual heat remains, causing irritability, insomnia, dry mouth, thirst, and slight fever, use Duanju Maogen Tang combined with Yiyuan San to clear and drain for harmonization; if severe, use Jiawei Daochi San for particularly swift effects.

2. Combining Warming and Cooling is called "Harmonizing" because cold pathogens require warming to dissipate, and damp pathogens require warming to transform, whereas heat pathogens require cooling to clear, and fire pathogens require cooling to purge. Famous doctors throughout history: Song Dynasty's *Heji Ju Fang* primarily used Liutong Shenjie San; Jin Dynasty's Liu Hejian primarily used Fangfeng Tongsheng San; Qing Dynasty's Zhang Luyu primarily used Liangge San combined with Tiansan San; You Zaijing primarily used Dahuang Yinzi. These formulas release the exterior and attack the interior, vent the upper and guide the lower, attend to both Qi and Blood, ensuring comprehensive coverage, allowing Wind-Cold, Dampness, and Heat to be resolved simultaneously from the exterior, interior, and Triple Burner. This is indeed a swift method of harmonization; however, it is only suitable for patients with solid constitution and excess syndromes complicated by Wind-Cold, Summer-Heat, or Dampness. If suffering only from Wet-Warmth or Damp-Heat, treatment should follow the Triple Burner differentiation: Upper Burner requires aromatic and bland opening and venting, such as Wuye Lugeng Tang, Jiawei Erchen Tang, Jiawei Wuling San, Huopo Erchen Tang, Huopo Xialing Tang, etc.; Middle Burner requires bitter descending and acrid unblocking, such as Zhishi Zhichi Tang, Baihu Jia Cangzhu Tang, Huanglian Wendan Tang, Huoxiang Zuojin Tang, Lianpo Yin, etc.; Lower Burner requires bitter-cold and bland渗 (permeating), such as Yichen Wuling San, Longdan Xiegan Tang, Jiawei Bazhen San, Qingre Shenshi Tang, Xuanqing Daozhuo Tang, etc. For those with innate Yin deficiency complicated by Damp-Heat, common among the wealthy who consume rich foods, the treatment differs significantly from ordinary Damp-Heat. Using wind-dispelling herbs may cause deficient fire to flare upward; using bland-draining herbs may cause Yin fluids to escape; focusing solely on drying dampness will exhaust true Yin; using purely yin-nourishing herbs will instead assist phlegm-dampness to obstruct upwards. One must ensure appropriate moistening and drying, coordination of rigid and soft, and light-clear harmonization to gradually achieve results. Examples include Yuanmi Jian (Fried Jiangxi Atractylodes macrocephala half qian, soaked in second rice-washing water for six hours, remove herb and decoct), Shenmai Donggua Tang (Beishashen, Yuandongdong, Huangcao Chuhu, fried Pipaye, fresh Dongguapi and Dongguazi), Jiawei Daochi San, Jiagan Ganlu Yin, which nourish Yin and expel dampness, excelling in both aspects. Master Fan prefers Tongbian Sicao Tang (Fresh Maogen root, fresh Cheqiancao each 1 liang, fresh Sanbaicao 3 qian, fresh Biqicai 2 qian, clear child urine 1 cup, Guang Yujin juice 4 spoons, mixed evenly, taken in two doses), which is also steady and effective.

3. Bitter-Acid Dispersion is also called Harmonizing because warm-heat condensed pathogens are in the interior; without bitter-acrid opening and venting, the interior condensation cannot be resolved; without dispersing complicated pathogens, the latent pathogens cannot be resolved. There are distinctions in severity and urgency: If complicated pathogens are heavy and disease progression is acute, first administer Feima Jindan (Spit-and-Purge Pill), using both emetic and purgative methods to remove complicated pathogens, then treat the primary warm-heat disease. If complicated pathogens are light and disease progression is slow, observe the type of complicated pathogen and use digestive herbs to harmonize, such as Zhishi Zhichi Tang combined with Lu's Runzi Wan, Xiaoxianzhong Tang combined with Puhuang Wan to disperse phlegm-food retention, Jiawei Xiaoxianzhong Tang, Jiaban Banxia Xiexin Tang, Jiawei Lianru Juban Tang, Jiawei Zhishi Zhichi combined with Xiaoxianzhong Tang to disperse phlegm-fire, Changyang Xiexin Tang, Xiaoxianzhong Tang combined with Jiaban Banxia Xiexin Tang to disperse damp-heat-phlegm-fire, Loulu Jupi Tang, Jiawei Xiaoxianzhong Tang combined with Kongyan Dan to disperse phlegm-water, Jiashan Xiao Chaihu Tang, Zengsun Xiao Chaihu Tang, Sini San combined with Baiwei Tang to disperse blood-heat. Use them according to symptoms with consistent success. Others like Chenxiang Baixiao Qu are good at digesting food, phlegm, water, and stasis, with rapid effects, usable as adjuncts. However, for post-illness fluid depletion, rebellious Qi, and Liver Fire rushing up, common in the wealthy, which is hardest to resolve, use Wuzhi Simo Yin (Watermelon juice, sugarcane juice, pear juice, fresh Shengdi juice, Jin juice each one ladle, Guang Yujin, Guang Muxiang, Shang Chenxiang, Wuyao each ground juice one tea spoon, mixed with half boiled water) which is excellent. Various juices nourish stomach fluids, acrid-aromatics scatter rebellious Qi. For treating Yin deficiency with Qi stagnation, one can imitate this medication for harmonization.

4. Simultaneous Tonification and Purgation is used because the patient is usually weak or has chronic internal injuries, and upon contracting warm-heat latent pathogens, one must treat both pathogen and healthy Qi, addressing both root and branch. Thus, there are methods of combining tonification and purgation, purging before tonifying, and incorporating purgation within tonification. Examples: Renshen Su Yin, Renshen Baidu San, Canglin Tang (tonify Qi and release exterior); Qiwei Congbai Tang, Duanju Maogen Tang, Jiawei Weirui Tang (nourish Yin and release muscle); Renshen Baizhu Tang, Zhuye Shigao Tang, Jiashan Zhuye Shigao Tang (tonify Qi and clear heat); Huanglian Ejiao Tang, Qianjin Shengdihuang Jian, Xijiao Dihuang Tang (nourish Yin and purge fire); Shuijie San, Tao's Huanglong Tang (tonify righteousness and drive out pathogens); Buzhong Yiqi Tang, Tiaozhong Yiqi Tang (tonify Qi and vent pathogens); Sanhuang Jizhu Wan, Zhishi Daoli Wan (tonify Qi and promote digestion); [Missing Character] Tang (tonify Qi and moisten intestines); Yixue Runchang Wan (nourish Blood and moisten downward); Yangrong Chengqi Tang (nourish Blood and unblock bowels); Zhuling Tang, Jiawei Daochi San (nourish Yin and promote urination); Tao's Xiaoyao Tang (clear-tonify Yin and drive out stale essence); Daochi San combined with Jiawei Huzhang San, Zhuling Tang combined with Shushi San (nourish Yin, promote urination, and drive out stale essence). These are methods of combining tonification and purgation.
Furthermore, if the primary disease involves Yin deficiency with fire hyperactivity, compounded by Wind-Warmth or Wind-Heat, wind aids fire and depletes Yin severely. Urgently use acrid-cool to scatter wind for the branch, Congchi Tang with child urine is safest; if severe, use He-Xing-Shi-Gan Tang to quickly dispel pathogens, followed by Wuzhi Simo Yin or Qianjin Shengdihuang Jian to nourish Yin and descend fire for the root. If compounded by Summer-Dampness or Damp-Heat, damp-fire煎熬 injures Yin further. Urgently nourish Yin and expel dampness for the branch, Zhuling Tang and Jiawei Daochi San are safest; if severe, Tongbian Sicao Tang can be considered, followed by Shenmai Donggua Tang or Jiagan Ganlu Yin to nourish Yin and clear interior for recovery. If the primary disease involves Yang deficiency with Qi stagnation, compounded by Wet-Warmth or Damp-Heat, Middle Qi becomes more depressed and damp suppresses heat. Urgently use aromatic-bland to drain dampness, Jiawei Erchen Tang is most appropriate, followed by Jiawei Wuling San to vent pathogens, then Xiangsha Liling Tang (Xiangsha Lizhong Tang combined with Wuling San) to soothe Middle, tonify Qi, and use acrid-bland to transform dampness for the root; Yichen Weiping Tang also addresses both root and branch. These are methods of purging before tonifying.
If internal injury involves Lung Tuberculosis (Fei Lao) in the mid-stage, encountering Wind-Warmth and Damp-Heat causes external and internal injuries to scorch each other, branch pathogens and primary disease entangle. Wind induces asthma, Dampness assists phlegm, Heat increases cough and bleeding. Without careful diagnosis, mistaking primary disease worsening and using blind tonification (using Atractylodes/Cangzhu to stagnate Qi, Rehmannia/Shudi to cloy Blood, Bai Shao/Wuweizi to trap pathogens) is dangerous. Acute cases are like splitting a dead tree with two axes, collapsing immediately; slow cases are like a mouse entering a bull's horn, going deeper and harder to exit. Emergency treatment should primarily tonify deficiency and treat the root, but must also lightly address branch symptoms. For example, Ge's Baohe Tang using Bohe and Zisu, Yangyin Qingfei Tang using Bohe and Jiegeng can lightly resolve Wind-Warmth; Jiagan Ganlu Yin using Yichen, Huangqin, Zhishi, Shashen Maidong Tang using heavy Dongguapi and Dongguazi can clear Damp-Heat. These are methods of incorporating purgation within tonification.
In summary, internal injury with external contraction involves deficiency with excess and excess with deficiency. Treatment must be agile but first determine if the body is Qi/Blood deficient, both Qi and Blood deficient, Essence/Spirit deficient, or both Spirit and Essence deficient. Then differentiate if the injury is from sexual exhaustion, mental depression, medical error, or dietary mishap. Analyze the severity of contracted pathogens. In acute cases, treat the branch first to remove pathogens; once pathogens are gone, healthy Qi settles. In chronic cases, treat the root to nourish healthy Qi; once healthy Qi is sufficient, pathogens depart.

5. Calming Recurrence/Sequelae and Regulating Qi and Blood is used because the main force of latent pathogens has subsided but residual pathogens remain. Small or mild formulas are used to calm recurrent and sequelae conditions for harmonization, as Dai Beishan described as "calming hyperactivity." Methods include reducing dosages of exterior-releasing, interior-attacking, or digestive formulas combined with regulation, or changing decoctions into pastes, powders, pills, or elixirs using cooling and tonifying methods. Many methods exist, detailed in the General Discussion on Recurrence and Sequelae, so not repeated here. Only for recurrence due to anger with pre-existing fluid-pain (Yin Tong), chest distension, epigastric oppression, where other methods fail, Yipiao used Qianjin Wuxiang Tang (Qianjin Frost 1 qian decocted, grinding Chenxiang, Guang Muxiang, Mu Dingxiang, Bai Tanxiang, Zi Jiangxiang each one spoon) repeatedly to drain fluid-dampness and cure. I have verified this consistently, so I specially highlight it. Regarding symptoms: alternating chills and fever, night sweats, bitter taste, desire to vomit, dry throat, vertigo, thick white tongue coating slightly yellow, irritability and thirst, chest/hypochondrium fullness and pain, deafness, yellow urine, vomiting/diarrhea with epigastric pain, dry mouth/stiff tongue with aversion to cold, constipation/dysuria with chills/fever, chest diaphragm stuffiness with palpitations, free urination/defecation with sticky tongue coating, frail physique with slippery-thick tongue coating.
For the above symptoms suitable for harmonization, these few examples are cited, others can be inferred. Methods are comprehensive, but the key is prescribing according to symptoms.