核
Character Story & Explanation
In modern Chinese, 核 is indispensable in daily life — from food labels ('核果' héguǒ, 'drupe') to headlines about 'nuclear power' (核能 hénéng) or 'nuclear weapons' (核武器 hé wǔqì). A widely used idiom is 核心价值 (hécōnɡ jiàzhí, 'core values'), promoted nationwide in education and media. The term 核酸 (hésuān, 'nucleic acid') became globally familiar during the pandemic, appearing on test kits and health reports across China.
The character’s form is documented in seal script (c. 3rd century BCE) as a tree radical plus 亥, originally a phonetic component. It was never a pictograph of a pit itself — rather, it evolved as a semantic-phonetic compound where 木 signals plant origin and 亥 provides sound. Today, Chinese people use 核 constantly — for example, when ordering 'pitless plums' (去核李子 qù hé lǐzi) at a market or debating 'the core issue' (核心问题 hécōnɡ wèntí) in class.
Hi students! Let’s look at the character 核 (hé), which means 'pit' — like the hard stone inside a peach or cherry. Though it’s simple in meaning, it’s very versatile: it appears not only in fruit-related words but also in scientific and political terms like 'nuclear energy' or 'core idea'. Don’t be surprised — many Chinese characters evolve from concrete objects to abstract concepts. Think of 核 as starting with something tangible (a pit) and growing into something central or essential.
This character has 10 strokes and belongs to the 木 (mù, 'tree') radical — a clue that its original meaning was tied to plants or fruits. Indeed, early uses in classical texts refer to fruit stones or seeds. Over time, because pits are at the very center of fruit, 核 naturally extended to mean 'core', 'nucleus', or 'essence'. That semantic shift is common in Chinese and helps you remember related vocabulary.
At HSK Level 5, 核 appears frequently in academic, news, and technical contexts — so mastering it opens doors to higher-level comprehension. It’s pronounced with the second tone (hé), like saying 'her' but rising steadily. Practice writing it stroke by stroke, paying attention to the balanced structure: left-side 木 (tree) + right-side 亥 (hài, an ancient character now used phonetically). This combination makes it a phono-semantic compound — one of the most common character types!
Example Sentences
Common Compounds
Similar Characters — Don't Mix These Up
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