筋
Character Story & Explanation
In daily life, 筋 appears in food terms like niújīn (beef tendon), prized for its chewy texture and collagen content—common in Sichuan hotpot and Cantonese braised dishes. It also features in idioms: jīn pí lì jìn (筋疲力尽), meaning 'exhausted to the last sinew', used since the Tang dynasty (attested in Complete Tang Poems) to describe utter physical depletion.
The character’s earliest confirmed form appears in seal script (c. 3rd century BCE), showing ⺮ (bamboo radical) + jīn phonetic (巠). It is *not* a pictograph—it evolved graphically, not visually. Modern usage leans into its dual role: anatomical (e.g., ‘tendon’) and metaphorical (e.g., ‘essence’ or ‘vital fiber’ of a system).
As an archaeologist sifting through bamboo slips from the Warring States period, I found 筋 etched in ink on medical manuscripts—never as mere ‘muscle’, but as ‘sinew’: the resilient, fibrous tissue binding bone to movement. Early texts like the Huangdi Neijing treat 筋 as a vital channel for qì, linking physical strength to energetic integrity. Its radical ⺮ (bamboo) hints not at vegetation, but at tensile flexibility—like bamboo stalks bending without breaking.
This character reveals ancient China’s holistic anatomy: no sharp divide between muscle, tendon, and ligament. In excavated Mawangdui silk texts (c. 168 BCE), 筋 appears alongside meridian diagrams, governing posture, martial readiness, and even emotional restraint—‘tightening the sinews’ meant mastering self-control. It was never just biology; it was discipline made anatomical.
Later dynastic commentaries refined its meaning under Confucian and Daoist lenses: Confucians linked strong 筋 to moral fortitude (‘upright sinews reflect upright virtue’); Daoists saw relaxed 筋 as essential for spontaneous action (zìrán). Even today, acupuncture points named with 筋 (e.g., Yánglíngquán) target fascial junctions—not isolated muscles—proving this ancient biomechanical insight remains clinically relevant.
Example Sentences
Common Compounds
Similar Characters — Don't Mix These Up
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