MENTAL MODEL · M0441

The Eight Methods / Ba Fa

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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

The eight fundamental methods of treatment in traditional Chinese medicine, summarized by Cheng Zhongling of the Qing Dynasty. They are eight tactical actions taken according to different disease conditions (exterior/interior, cold/heat, deficiency/excess).

SCAFFOLDING EFFECT

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Tactical selection tree. No matter how many prescriptions there are, there are only these eight tactical actions. First determine the general direction: is it to eliminate toxins (sweating, vomiting, purging)? Or to strengthen (tonifying)? Or to regulate (harmonizing)?

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Cheng Zhongling of the Qing Dynasty summarized the eight methods of treatment, corresponding to the eight types of disease mechanism directions: exterior/interior (sweating, purging), upward/outward (vomiting), cold/heat (warming, clearing), deficiency/excess (tonifying, reducing), and harmonizing (harmonizing). Any complex disease can be reduced to one or a combination of these eight tactical actions, which is a 'tactical selection tree' rather than rote memorization of prescriptions.

MINIMUM ACTION

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Practice this model in one real situation:

When facing a problem, first identify the syndrome: if the disease is in the exterior, use sweating
if in the interior, use purging
if in the upper, use vomiting
if cold, warm
if hot, clear
if deficiency, tonify
if excess, reduce
if there is a mixture of exterior/interior, cold/heat, use harmonizing. First determine the general direction (eliminate, strengthen, or regulate), then choose specific measures.

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Source support: Explicit

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zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E4%B8%AD%E9%86%AB%E5%AD%B8%E5%8F%B2ZH · Explicit
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