What are 成语 chéngyǔ?
We prefer not to translate the expression 成语 chéngyǔ, as it is an idiosyncratic structure of Chinese. It is better to incorporate the term itself rather than adopting an imprecise translation.
Chéngyǔ vs. Chinese Proverbs
The classical triad of 熟语 shúyǔ fixed expressions is:
谚语 yànyǔ: Popular proverbs, usually oral and more flexible in structure.
歇后语 xiēhòuyǔ: Two-part allegorical sayings with a "truncated" ending or an implicit moral.
成语 chéngyǔ: Four-character idioms of literary or scholarly origin.
While it is most common for them to consist of four characters, there are exceptional 成语 chéngyǔ composed of three, five, or even more than seven characters. Although Chinese also possesses proverbs, they are not identical to 成语 chéngyǔ. A distinguishing feature is that 成语 chéngyǔ can fulfill various grammatical functions; they can act as subjects, adjectives, verbs, or adverbs, whereas proverbs are typically complete sentences.
Beyond 成语 chéngyǔ, other four-character structures exist in Chinese, leading to some controversy over whether certain phrases should be categorized as such. They appear in dictionaries, so the simplest approach is often to use a reliable reference work, while remaining aware that lists may vary between editions. There are several thousand in existence, though those used in daily speech are considerably fewer.
成语 chéngyǔ: Windows into Chinese Culture
Learning about the meaning, usage, and history of 成语 chéngyǔ is a powerful tool for a deep understanding of Chinese culture. While indispensable for advanced students, enjoying them is not limited to language learners. Many 成语 chéngyǔ are based on a story, a poem, or a philosophical text from which they derive their meaning. Their efficacy lies in the tension between their literal sense and their deep or allegorical meaning, generally derived from their original historical context. From a literary and philosophical perspective, they are extremely interesting and represent the way traditions and culture persist within the language.
The best way to learn about 成语 chéngyǔ is through examples; for this reason, our site features a section dedicated to them. In addition to showing their context and usage, we provide a translation of the original source text. It is common for textbooks to present modern Chinese versions, but we prefer to work with the original classical texts. In this way, the reader can enjoy the translation while the classical text becomes a tool for those approaching the study of Literary Chinese.
An example of 成语 chéngyǔ
The seminal work of the Legalist school is the《韩非子》Hán Fēizi (3rd century BCE). Master 韩非 Hán Fēi defends a political philosophy of a more pragmatic nature than Confucianism, considering military power and the prosperity of the kingdom to be paramount. He opposes basing political advice on classical works, arguing that success depends on the ability to evaluate the present situation, which may require innovative measures. In arguing this point, he constructs the analogy upon which our 成语 chéngyǔ is based.
By reading the work and observing contemporary examples, we see that both aspects are key to understanding this four-character structure: its original context and its current meaning. Through its use, the idiom is updated, extending its sense in previously unexplored directions.
郑人买履 Zhèng rén mǎi lǚ
Literal translation: The man from 郑 Zhèng buys shoes.
Allegorical sense: To trust dogmas or rules more than oneself. To be rigid in the application of norms.
郑人有且买履者，先自度其足而置之其坐，至之市而忘操之。
Zhèng rén yǒu qiě mǎi lǚ zhě, xiān zì duó qí zú ér zhì zhī qí zuò, zhì zhī shì ér wàng cāo zhī.
There was a person from 郑 Zhèng who was about to buy shoes. First, he took a measure of his foot and placed it on his seat. Upon going to the market, he forgot to take it with him.
已得履，乃曰：“吾忘持度。”反归取之。及反，市罢，遂不得履。
Yǐ dé lǚ, nǎi yuē: “wú wàng chí dù.” Fǎn guī qǔ zhī. jí fǎn, shì bà, suì bù dé lǚ.
When he was already about to obtain the shoes, he then said: "I forgot to bring the measure." He went back and got it, but when he returned, the market had ended. Consequently, he did not get the shoes.
人曰：“何不试之以足？” 曰：“宁信度，无自信也。”
Rén yuē: “hé bù shì zhī yǐ zú?” Yuē: “níng xìn dù, wú zì xìn yě.”
Someone said: "Why didn't you try them on with your feet?" He replied: "I would rather trust the measure than trust myself."
成语 chéngyǔ are not just words: they are time capsules that bring millennial wisdom to the present in just four characters. Understanding their sense and incorporating them into our thinking—even without the characters or the Chinese expressions—shows the power of a culture capable of teaching beyond its specific context, constituting a vital part of the cultural capital of humanity.
郑人买履 Zhèng rén mǎi lǚ in Contemporary Discourse
The analytical power of this 成语 chéngyǔ lies in its ability to denounce empty formalism, a central concern of the Legalist school. In contemporary China, this expression is not a mere archaism; it is frequently used to point out the disconnect between norms and reality in critical institutional spheres.
In bureaucratic management, for example, the figure of the "man from 郑 Zhèng" is invoked to criticize internal policies or regulations that, due to their rigidity, prevent the minimal flexibility necessary to solve practical day-to-day problems. Similarly, in the field of education, the idiom is employed to question systems that prioritize the memorization of standardized answers and dogmas—the "measure" or 度 dù—over the development of critical thinking and the student's actual capacity for discernment—the "foot" or 足 zú. By using this idiom, the modern speaker updates the warning of Master 韩非 Hán Fēi: the danger of trusting pre-established parameters more than the evidence of facts.
This article was originally published in Spanish: Qué es un 成语 chéng yǔ
Díaz, M. E., & Torres, L. N. (2020, July 23; updated 2025, May 1). What are 成语 chéngyǔ? China from the South. https://chinafromthesouth.com/2024/06/what-is-cheng-yu.html
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