MENTAL MODEL · M1216

Three Regions and Nine Levels

TechnicalHigh supportTraditional Chinese Medicine

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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

The earliest method of comprehensive pulse palpation. It divides the body into three regions: upper (head and face), middle (hands), and lower (feet), each with three levels corresponding to heaven, earth, and man. Diagnosis is made by palpating the arterial pulsations at nine locations across the body.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Distributed sensors. The current practice of palpating only the radial artery (Cunkou) at the wrist is a simplified version. In critical illness, one should also palpate the dorsalis pedis artery (Fuyang pulse), the carotid artery (Renying pulse), and the temporal artery. If the wrist pulse is absent but the dorsalis pedis pulse remains, it indicates that stomach qi is not exhausted and the patient can still be saved.

anchor

Anchor fast decisions

It replaces 'single-point sampling' with 'multi-point sampling': a single signal may fail or mislead, and sensors distributed at different locations provide redundancy and cross-checking. When the primary sensor (Cunkou) shows no signal, check whether backup sensors (Fuyang/Renying) still have signals to determine if the system is truly dead (if stomach qi remains, there is still hope). This embodies the idea of 'using redundancy to improve diagnostic robustness'.

MINIMUM ACTION

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Practice this model in one real situation:

Placement: Set up multiple observation points at key locations of the system (upper/middle/lower).
Sampling: At each point, collect signals from different dimensions (heaven/earth/man).
Cross-check: When a signal at one point is abnormal, use signals from other points for cross-validation to avoid misjudgment from a single point.
Determine survival: When the primary signal disappears, check backup signals to decide whether there is still hope or not.

Check to track your progress (stored locally)

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Source support: Explicit

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baike.baidu.comhttps://baike.baidu.com/item/%E4%B8%89%E9%83%A8%E4%B9%9D%E5%80%99%E8%AF%8A%E6%B3%95ZH · Explicit
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