# 沧海一粟

cāng hǎi yī sù

A tiny part of an immense whole

## Meaning & wording

**Literally:** One grain in a vast sea

**Traditional Chinese:** 滄海一粟

**Register:** Reflective · literary

[Perspective](https://chinese-idioms.yudis.dev/idioms/topics/perspective)

## When to use it

Express smallness against a vast scale.

Small size does not mean no value.

## Understanding the expression

A grain almost disappears beside the size of the sea. The image changes our sense of scale by setting one small thing against an immense whole. It can describe a person in history, a sum beside a large need, or a place within the world. The tone may be humble, reflective, or discouraging. The expression compares size or significance without proving that the small contribution is useless.

## Examples

这笔捐款只是沧海一粟。

### Traditional Chinese

這筆捐款只是滄海一粟。

zhè bǐ juān kuǎn zhǐ shì cāng hǎi yī sù 。

This donation is only a drop in the ocean.

面对星空，人如沧海一粟。

### Traditional Chinese

面對星空，人如滄海一粟。

miàn duì xīng kōng ， rén rú cāng hǎi yī sù 。

Beneath the stars, people seem tiny in the vastness.

我们的资料只是沧海一粟。

### Traditional Chinese

我們的資料只是滄海一粟。

wǒ men de zī liào zhǐ shì cāng hǎi yī sù 。

Our material is only a tiny part of the whole.

一座小岛在地图上如沧海一粟。

### Traditional Chinese

一座小島在地圖上如滄海一粟。

yí zuò xiǎo dǎo zài dì tú shàng rú cāng hǎi yī sù 。

A small island looks like a speck on the map.

## Sources & reference checks

Original explanations and examples from Chinese Idioms Almanac. Source-checked October 6, 2026.

- [CC-CEDICT · forms & pronunciation](https://www.mdbg.net/chinese/dictionary?page=worddict&wdqb=%E6%BB%84%E6%B5%B7%E4%B8%80%E7%B2%9F)

- [Ministry of Education · 成語典](https://dict.idioms.moe.edu.tw/idiomView.jsp?ID=74&webMd=1&la=0)

## Keep exploring

- [沧海遗珠 cāng hǎi yí zhū Valuable talent or work remains overlooked ](https://chinese-idioms.yudis.dev/idioms/cang-hai-yi-zhu)

- [参差不齐 cēn cī bù qí Uneven or varying in level ](https://chinese-idioms.yudis.dev/idioms/cen-ci-bu-qi)

- [差强人意 chā qiáng rén yì Be barely satisfactory ](https://chinese-idioms.yudis.dev/idioms/cha-qiang-ren-yi)

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