Tools & Metal — 钅/石/玉/工

A radical tour of the hardware namespace

Before Chinese had a word for 工程 (engineering), it had four radicals that quietly built the whole toolkit. Metals, stones, jade, and labor — the four material categories a Bronze Age civilization needed to name — became the four namespaces that every piece of modern hardware vocabulary still draws from. Learn them once and terms like 钢笔 (fountain pen), 铅笔 (pencil), and 铁路 (railway) stop looking like arbitrary compounds and start looking like obvious descriptions.

If a character's radical is 钅, it is made of metal. If it's 石, it is stone or stone-hard. If it's 玉, it is jade or precious. If it's 工, it is crafted, manufactured, or engineered.

// The hardware namespace, imported piece by piece.
import { iron, silver, gold, steel }  from "钅";   // metals module
import { stone, hard, ore, brick }    from "石";   // mineral module
import { jade, pearl, ring, sphere }  from "玉";   // precious module
import { work, skill, tool, craft }   from "工";   // labor module

1. The radical map

Four radicals, one workbench. Anchors jump to each section below.

6. Compound tech vocabulary

With the four radicals in hand, the modern engineering lexicon decomposes on sight.

7. Engineering-adjacent vocabulary

Two-character compounds that show up everywhere in technical text — datasheets, papers, product pages.

8. Sentence patterns

Five sentences built from the vocabulary above. SVO, no conjugation, measure words mandatory between numbers and nouns.

// 这 个 工具 很 好用。
// zhège gōngjù hěn hǎoyòng
// "This tool is easy to use." (好 + verb = "easy to X")
thisTool.usability === "good";

// 我 买 了 一 台 新 电脑。
// wǒ mǎi le yī tái xīn diànnǎo
// "I bought a new computer." (台 = measure word for machines)
me.bought(new Computer());

// 铁 很 硬。
// tiě hěn yìng
// "Iron is hard." (adjective sentence, no verb "to be")
iron.hardness === "hard";

// 他 是 一 个 工程师。
// tā shì yī gè gōngchéngshī
// "He's an engineer."
him instanceof Engineer;

// 钥匙 在 桌子 上。
// yàoshi zài zhuōzi shàng
// "The key is on the table." (在 = location verb, 上 = on top)
key.location === table.top;

9. Next steps

Four radicals, maybe fifty characters, and the entire engineering vocabulary of modern Chinese is within reach.

• Browse tech & engineering vocabulary — filtered by tag
• Start a review session — lock in the metals set first
• Back to: The Body — for the 月, 扌, 𧾷 radicals referenced above
• Module 9: Tech Chinese — the full curriculum for engineering Mandarin
• Module 4: Composition — the theory of radicals

Next in this series: time and travel, followed by weather and the natural world — where 水, 火, 木, and 土 finish rounding out the Five Elements.