Stroke Order
cái
HSK 4 Radical: 木 7 strokes
Meaning: material
词组 · Compounds

📚 Character Story & Explanation

材 (cái)

Trace 材 back to its earliest form in bronze inscriptions (c. 11th–3rd century BCE), and you’ll spot a clear pictograph: a tree (木) with an extra horizontal stroke cutting across its trunk — like a saw mark or a measured section. That slash wasn’t decoration; it signaled 'a usable piece cut from the whole'. Over centuries, the tree radical stabilized at left, while the right side evolved from that pragmatic cut into the modern 财 (cái) component — not 'wealth', but a phonetic hint (both 材 and 财 share the c- sound and -ái rhyme). By the seal script era, the seven strokes were fixed: 木 (4 strokes) + the simplified right-hand part (3 strokes), visually echoing 'wood prepared for purpose'.

This origin explains everything: 材 wasn’t just 'wood' — it was *selected, processed, ready-to-use* wood. The Classic of Rites (Lǐjì) already used it metaphorically: 'A nobleman cultivates his moral 材' — meaning his inherent nature, like timber needing shaping. Mencius extended it further, calling people's innate goodness their 'moral timber' (仁材 rén cái). So from sawn logs to human potential, 材 has always been about latent capacity waiting for the right tool — whether axe or teacher. Its shape is literally a tree marked for transformation.

材 (cái) is all about raw potential — not just 'material' as inert stuff, but the *kind* of material that can be shaped, used, or even wasted. Its heart is 木 (mù), the 'tree' radical, which instantly roots it in the physical world: wood, timber, natural substance. That’s why 材 almost never means abstract 'material' like data or arguments (that’s usually 资料 zīliào or 内容 nèiróng); it’s tangible — lumber, talent (as 'raw human timber'), or even slang for 'a good catch' (e.g., 青年才俊 yǒngcái cái jùn). You’ll see it after measure words (一材木 yī cái mù? No! — it’s 一根木材 yī gēn mùcái), and crucially, it’s rarely standalone: you’ll say 建筑材料 (jiànzhù cáiliào, 'building materials'), not just *材料* as a vague noun without context.

Grammatically, 材 shines in compounds, especially with 料 (liào) to mean 'material', or in idioms like 因材施教 (yīn cái shī jiào, 'teach according to students’ aptitudes'). Learners often mistakenly use 材 where they need 才 (cái, 'talent' or 'only then') — homophone trap! Also, while English says 'raw material', Chinese says 原材料 (yuán cáiliào), not *原材*. And beware: 材 alone isn’t 'resource'; that’s 资源 (zīyuán). It’s specific, wooden, and practical.

Culturally, 材 carries quiet weight: in Confucian thought, a person’s innate endowment is their 材质 (cáizhì, 'natural disposition'), like uncarved wood awaiting the artisan. Modern usage keeps this duality — from construction sites ('steel beams') to HR departments ('talent acquisition'). A common slip? Writing 材 instead of 才 in 'only then' constructions — turning 'I only realized later' (我后来才明白) into nonsense. Remember: 木 = tangible; 才 = abstract timing or ability.

💬 Example Sentences

Common Compounds

💡 Memory Tip

Imagine a carpenter tapping a wooden beam (木) and saying 'Cái! This one’s CUT-ready!' — the 7 strokes are your mental tally: 4 for 木 + 3 for the 'cut-and-ready' marker on the right.

Similar Characters — Don't Mix These Up

Related words

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