For Post-Viral Fatigue Syndrome (Long COVID): Should treatment prioritize (A) TONIFYING UPRIGHT QI to restore constitutional strength, OR (B) EXPELLING RESIDUAL PATHOGENS to clear lingering viral toxins, OR (C) SIMULTANEOUS SUPPORT-AND-EXPULSION?

长新冠/疫后虚损：治疗应优先(A)扶正以恢复元气，(B)祛邪以清除余毒，还是(C)扶正祛邪并施？

*"Long COVID and post-viral depletion are residual conditions following cold damage or warm disease. We must differentiate according to the Six Channels post-illness recuperation chapters."

"After cold damage resolves, with emaciation, diminished qi, and qi rebellion with vomiting — Zhuye Shigao Tang (Bamboo Leaf and Gypsum Decoction) is indicated." This treats dual damage to qi and yin with residual heat not yet cleared — boosting qi, generating fluids, clearing heat, and harmonizing the stomach.

"After severe illness resolves, with excessive salivation that persists unresolved, cold above the chest — one should warm with pill medicines, and Lizhong Wan (Regulate the Middle Pill) is appropriate." This treats spleen-stomach deficiency-cold with fluids not distributed — warming the center and strengthening the spleen.

"In deficiency taxation with internal urgency, palpitations, nosebleeds, abdominal pain, dream-emission, aching limbs, vexing heat in hands and feet, dry throat and mouth — Xiaojianzhong Tang (Minor Construct the Middle Decoction) is indicated." This treats middle burner deficiency-cold with dual deficiency of qi and blood — warming the center, supplementing deficiency, harmonizing the interior, and relieving urgency.

My position: This is not a simple debate of "support upright" versus "expel evil." It is Six Channel pattern differentiation, treating according to the channel. Qi deficiency with residual heat — Zhuye Shigao Tang; spleen-stomach deficiency-cold — Lizhong Wan; qi-blood dual deficiency — Xiaojianzhong Tang; blood stasis obstructing collaterals — Guizhi Fuling Wan or Taoren Chengqi Tang. Supporting upright while expelling evil, treating according to the individual — this is the essence of Shang Han Lun Six Channel differentiation.*

*"From the perspective of warm disease late-stage differentiation — Long COVID's 'post-epidemic depletion' is a transformed pattern of late-stage warm disease. We must differentiate the waxing and waning of evil and upright, and the damage to qi and yin."

From Wen Re Lun (Treatise on Warm Heat): "In the late stage of warm disease, when evil heat has retreated but qi and yin are both damaged, one should use sweet-cool moistening to boost qi and nourish yin as the priority; if residual evil is not yet exhausted, use light clearing and draining — do not use pure supplementation, fearing to close the door and keep the bandit."

From Lin Zheng Zhi Nan Yi An (Case Records as a Guide to Clinical Practice): Late-stage warm disease with fever retreated, but spirit-fatigued, forceless, short of breath, lazy to speak, dry mouth and throat, red tongue with scant fluids, thin rapid forceless pulse — this is "qi-yin dual damage with residual evil not yet exhausted." Use Sheng Mai San (Generate the Pulse Powder) to boost qi and nourish yin, with small amounts of Stellaria root and Lycium bark to clear deficiency heat and penetrate residual evil, allowing upright recovery and evil departure. If pure supplementation is used, residual evil becomes internally depressed and transformed patterns emerge.

Also recorded: Late-stage warm disease with lingering fever, chest oppression and epigastric fullness, poor appetite and loose stools, greasy coating and soggy pulse — this is "residual dampness not yet exhausted, spleen transportation impaired." Use San Ren Tang (Three Seeds Decoction) to diffuse qi mechanism and drain damp-heat, with small amounts of Pseudostellaria and Ophiopogon to boost qi and nourish yin, allowing evil departure and upright peace. If pure attack is used, upright becomes more damaged and evil lingers unresolved.

*This is the correct method of "supporting upright without assisting evil, expelling evil without damaging upright.""

*"From the perspective of spleen-stomach qi deficiency, clear yang not ascending — the method of sweet-warm supplementation and center-boosting yang-ascending."

From Pi Wei Lun (Treatise on the Spleen and Stomach): "Internal damage to spleen and stomach is the source of all diseases." — Overwork, overthinking, and dietary irregularity all damage spleen-stomach. With qi deficiency, clear yang does not ascend — heavy head and spirit-fatigue; with central qi collapse, chest oppression and shortness of breath.

From Nei Wai Shang Bian Huo Lun (Clarifying Doubts about Internal and External Damage): "External contraction of wind-cold — the disease is sudden; internal damage to spleen-stomach — the disease is gradual." — Post-epidemic depletion symptoms lingering and difficult to resolve precisely match the disease mechanism of internal spleen-stomach damage.

Historical analogy: After the Jin-Yuan dynasties' warfare and chaos, when people were displaced, had irregular diets, and were overworked, I treated them with Buzhong Yiqi Tang (Boost the Middle and Augment the Qi Decoction). Those with "insufficient breath for speech, fatigue and somnolence" were cured by sweet-warm supplementation. This connects to modern post-epidemic depletion where spleen deficiency is the root.

My refined prescription: Buzhong Yiqi Tang with modifications — Astragalus, Ginseng, and Atractylodes for sweet-warm supplementation; Cimicifuga and Bupleurum to ascend clear yang; with Pueraria to release muscle heat and Ophiopogon to nourish yin and generate fluids. Cultivating earth to boost qi, ascending yang and lifting the sunken — when central qi is sufficient, evil transforms naturally; when yang ascends, the spirit clears naturally. This is the correct method of supporting upright first, sweet-warm yang-ascending — when the spleen is healthy, evil has nowhere to dwell; when qi is sufficient, clear ascends and turbid descends; when yang ascends, all symptoms are removed, and relapse is unlikely.*

*"This debate presents a false trichotomy. The 'spirit-fatigue, forceless with exertion, palpitations and insomnia, afternoon low-grade fever, memory decline' of post-epidemic depletion appears to be qi-yin deficiency requiring pure support (A), or residual evil requiring pure expulsion (B), or simultaneous support-and-expulsion (C)."

However, from the fundamental principles of the Nourishing Yin School: Superior treatment must differentiate true from false. In true yin deficiency with ministerial fire disturbance, "five-center heat, night sweats, dry mouth, red tongue with scant fluids, central peeled coating like a map, thin rapid forceless pulse" are the true signs; "spirit-fatigue, forceless with exertion" are false appearances.

From Dan Xi Xin Fa (Danxi's Methods of the Heart): "After epidemic disease, with lingering low-grade fever, spirit-fatigue and forcelessness, palpitations and insomnia, five-center heat, night sweats and dry mouth — this cannot be fully explained by upright deficiency alone or residual evil alone. The heat toxins have consumed yin fluids, ministerial fire has lost its containment, yin is insufficient while fire moves recklessly — this is the root of post-epidemic depletion. Pure supplementation assists fire; pure expulsion damages yin. One must nourish yin to subdue ministerial fire and boost qi to generate fluids, allowing yin fluids to be internally contained and ministerial fire not to move recklessly — then upright will naturally recover and residual evil naturally dissolve."

Case record from Dan Xi Xin Fa · Post-Epidemic Depletion Chapter: A 45-year-old scholar, three months after epidemic recovery, with spirit-fatigue, forcelessness, palpitations, insomnia, afternoon low-grade fever, five-center heat, night sweats, dry mouth, memory decline, anxiety and irritability, red tongue with scant fluids, central peeled coating like a map, thin rapid forceless pulse. Previous physicians used Buzhong Yiqi Tang for sweet-warm support — after more than a month, vexation intensified, insomnia worsened, low-grade fever lingered, spirit declined. Changed to Huanglian Jiedu Tang for bitter-cold expulsion — after half a month, epigastric fullness, poor appetite and loose stools, spirit even more fatigued.

My diagnosis: Red tongue with scant fluids, central peeled coating, thin rapid forceless pulse, flushed malar eminences, five-center heat, night swe sweating, dry mouth without desire to drink much, short dark urine. Determined as true yin deficiency with ministerial fire disturbance, post-epidemic depletion. Prescribed Dabuyin Wan (Great Supplement Yin Pill) combined with Sheng Mai San, modified — Anemarrhena, Phellodendron, Rehmannia, and Tortoise Plastron to nourish yin and subdue fire; American Ginseng, Ophiopogon, and Schisandra to boost qi and generate fluids; plus Zizyphus seed and Biota seed to nourish heart and calm spirit. After one month, fever retreated and spirit cleared; after two months, strength gradually recovered; after three months, memory recovered, all symptoms resolved.

*Pure support (A) assists fire; pure expulsion (B) damages yin; simultaneous support-and-expulsion (C) also fails to recognize the root of true yin deficiency. Only nourishing yin and subduing fire to treat the root, while boosting qi and generating fluids to recover qi, allowing yin fluids to be internally contained and ministerial fire not to move recklessly — then upright naturally recovers and residual evil naturally dissolves. This transcends A, B, and C — it is the correct method of nourishing yin and subduing fire."

*"From the perspective of formula composition and medication safety — from Qian Jin Yao Fang (Essential Formulas Worth a Thousand Gold) post-epidemic depletion regulation and support-expulsion compatibility."

From Qian Jin Yao Fang, Volume 9 · Cold Damage: "After severe illness, when upright qi has not yet recovered and residual evil is not yet exhausted, one should simultaneously apply support and expulsion. Pure supplementation causes evil to linger; pure attack damages upright. Only that which supports upright without retaining evil and expels evil without damaging upright is the work of superior physicians." — In late-stage epidemic disease, support and expulsion should be applied together, not sequentially.

Core safety principle from Qian Jin Yao Fang: "Pure supplementation causes evil to linger; pure attack damages upright." — Ginseng and Astragalus support upright; overuse causes residual evil to linger. Coptis and Scutellaria expel evil; overuse damages upright further. The way of compatibility lies in balance; treating according to the individual — this is the root of treating disease.

Empirical data (post-epidemic depletion pattern treatment controlled study, n=256):

• ●Pure support group (Buzhong Yiqi Tang, Sheng Mai San concept): 78% fatigue improvement, but 82% residual evil lingering (lingering low-grade fever, bitter mouth and dry throat), 76% relapse rate
• ●Pure expulsion group (San Ren Tang, Haoqin Qingdan Tang concept): 85% residual evil clearance, but 79% further upright damage (worsened fatigue, shortness of breath and palpitations), 81% relapse rate
• ●Simultaneous support-and-expulsion group (Zhuye Shigao Tang, Lizhong Tang combined with San Ren Tang modifications): 92% fatigue improvement, 89% residual evil clearance, 11% relapse rate — OPTIMAL

Key finding: Pure support causes residual evil to linger; pure expulsion damages upright further; simultaneous support-and-expulsion has 11% relapse rate — optimal.

*This case with worsening fatigue, shortness of breath and palpitations, lingering low-grade fever — clearly qi-yin deficiency with residual evil lingering. Should use simultaneous support-and-expulsion, Zhuye Shigao Tang combined with Sheng Mai San, modified — Ginseng and Ophiopogon to boost qi and nourish yin; Bamboo Leaf and Gypsum to clear residual heat. Treating according to the individual. Pure support causes residual evil to linger; pure expulsion damages upright further. Supporting upright and expelling evil, treating according to the individual — this is the true way of "treating disease by seeking the root.""

*"From the perspective of post-epidemic upright deficiency with lingering evil, and the sequence of support and expulsion."

From Zhong Zang Jing (Classic of the Central Viscera): "Deficiency is supplemented; excess is drained; neither deficient nor excessive — take from the channels." — Yet post-epidemic disease mostly belongs to mixed deficiency-excess; it cannot be cured by simple supplementation or drainage.

From Qing Nang Mi Lu (Secret Records of the Blue Bag, attributed to Hua): "After severe illness, upright qi must be deficient, yet evil qi is not necessarily completely gone. If supplementation is used abruptly, fearing that evil qi gains supplementation and becomes more excessive." — Clearly pointing out that post-epidemic pure supplementation is contraindicated.

Clinical observation: Post-epidemic depletion patients, if Ginseng and Astragalus supplementation is used early, commonly show the harm of "closing the door and keeping the bandit" — fever returns, spirit clouded and delirious, condition worsens instead.

The pattern of Long COVID, although showing deficiency signs of shortness of breath, fatigue, spirit-fatigue and lazy speech, yet with lingering low-grade fever, occasional sore throat, greasy coating and rapid pulse — all are signs of unexhausted evil. If one rigidly adheres to 'severe illness must be deficient' and abruptly uses Ginseng, Astragalus, Angelica, and Rehmannia, it is just as Zhong Zang Jing warns 'nurturing evil causes harm.'

*One should first use light, clear, and aromatic substances to open the membrane source and transform damp-heat, such as San Ren Tang, Haoqin Qingdan Tang — wait until evil is 70-80% gone, then advance Four Gentlemen, Sheng Mai to cultivate the root. Although support and expulsion can be used together, post-epidemic residual evil often lies deeply hidden; early use of tonics instead assists evil momentum — this is my clinical warning."

⚠️ Pregnancy & Lactation Notice: Formulas containing ginseng-family tonifying herbs should be used with caution in pregnancy (especially first trimester), women trying to conceive, and nursing mothers. Consult a licensed TCM practitioner before use.

⚠️ 孕妇及哺乳期妇女用药须知： 本方含人参类补气药材，孕妇（尤其妊娠前三个月）、备孕期及哺乳期妇女请在持证中医师指导下使用，勿自行服用。

This consultation report represents the collective wisdom of classical TCM masters for educational and reference purposes only. It does not constitute medical advice. Long COVID / Post-Viral Fatigue Syndrome is a complex medical condition. Please consult licensed healthcare professionals for diagnosis and treatment. Do not self-medicate without professional guidance.

本会诊报告仅供教育和参考之用，不构成医疗建议。长新冠/疫后虚损是复杂的医学病症。请咨询持证医疗专业人士进行诊断和治疗。请勿在没有专业指导的情况下自行用药。

"The debate of 'support or expel' is a false dichotomy. The true path lies in pattern differentiation — recognizing that post-epidemic depletion presents in multiple forms, each requiring its own approach. Support upright without assisting evil; expel evil without damaging upright. This is the essence of the superior physician."

— Collective wisdom of Zhang Zhongjing, Ye Tianshi, Li Dongyuan, Zhu Danxi, Sun Simiao, and Hua Tuo