Yin and Yang Wei Vessels
Updated 2026-08-01
INTRODUCTION
English translation pending.
CORE DEFINITION
The Yin and Yang Wei vessels are two of the eight extraordinary vessels in Chinese medicine. Wei means to bind or link: the Yang Wei vessel connects and holds all the yang channels, which govern the exterior, while the Yin Wei vessel binds all the yin channels, which govern the interior. The key qualification is that when this binding function fails, the whole system feels unheld, producing alternating chills and fever and, in the case of the Yin Wei, internal symptoms such as heart pain.
SCAFFOLDING EFFECT
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- Whole-system check: suspect these vessels when symptoms feel diffuse and the body seems to lack cohesion. - Exterior-interior split: use Yang Wei for surface-level instability and Yin Wei for internal complaints. - Reinforcement move: treat by tightening the net using the confluent points of the eight vessels.
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Individual channels handle local function, but a system also needs connective tissue that keeps the parts coordinated. The Wei vessels supply that coordination by linking all yang channels on the exterior and all yin channels on the interior. When the linking fails, the parts still work individually but no longer hold together, which is why the symptoms are systemic and shifting rather than localized. Tightening the binding restores coherence.
MINIMUM ACTION
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