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Erya

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The Erya, or Erh-ya, is the oldest surviving Chinese dictionary. It serves as a massive collection of glosses, which are explanations of words found in ancient texts. Scholars often describe it as a glossary, a thesaurus, or even an encyclopedia. The title itself carries a deep meaning regarding language. Many experts believe the first character, ěr, is a phonetic loan for a word meaning "near" or "close." The second character, yǎ, refers to something "proper," "correct," or "elegant." Therefore, the title likely means "approaching what is correct." This goal shows why the book was so vital for understanding classical Chinese literature.

The book functions through a specific system of organization and definition. It contains 2,094 entries that explain approximately 4,300 different words. In total, the text uses 13,113 characters. The Erya is divided into nineteen distinct chapters. The first three chapters deal with common, abstract words like verbs and adjectives. In these sections, the text groups synonyms together. For example, it might list three different words that all mean "high." The remaining sixteen chapters focus on concrete, specialized terms. These chapters use taxonomies, which are systems of classification, to group related items. For instance, one chapter might group various types of kinship terms together.

Because the book is a collection of many different explanations, its exact origin is a mystery. Traditional stories once credited the Duke of Zhou or Confucius with its creation. However, modern scholarship suggests it was compiled by editors using many different sources. These sources likely included commentaries on the Classic of Poetry. Most historians believe the compilation happened between the late 4th and early 2nd centuries BCE. Some core materials may even date back to the 6th century BCE. People continued to add new information to the text as late as the 1st century BCE.

Different scholars have tried to map out exactly when each chapter was written. The Japanese historian Naitō Konan provided a detailed analysis of these stages. He connected the Shigu chapter, which explains old words, to the early Confucian School around 450–400 BCE. He placed the chapters on family and astronomy between 300 and 230 BCE. The chapters covering geography were likely written during the late Warring States or Qin periods. The sections on natural history, such as plants and fish, date to between 300 and 160 BCE. Finally, the chapter on domestic animals was likely added during the Han dynasty, around 180 to 140 BCE.

The Erya held immense importance during the Han dynasty as an authoritative guide. By the Song dynasty, Confucian scholars officially named it one of the Thirteen Classics. This status made it one of the most revered works in Chinese literary history. Many scholars wrote commentaries to help people understand it. One famous example is the Erya zhu by Guo Pu, written around 310 CE. Other works, like the Erya Yinyi by Sun Yan, helped popularize the fanqie system. This was a method used to explain how words should be pronounced. Even though many ancient commentaries disappeared by the Song dynasty, interest in the text stayed very strong.

The content of the Erya provides a fascinating look at the natural world. The last seven chapters cover flora and fauna, including grasses, trees, insects, fish, birds, and wild animals. These sections describe more than 590 different kinds of plants and animals. Because of this, the book is considered a major document for natural history and historical biogeography. Biogeography is the study of where organisms live and how they move across the earth. By recording these names, the Erya preserves a snapshot of how ancient people categorized the living world around them.

The Erya also changed how information was organized in China. Most later Chinese dictionaries used a system based on character radicals, or the visual parts of a word. However, the Erya created a different tradition called "yashu" or "Erya-type" books. These books organize information by semantic categories, which means grouping things by their meaning. Instead of looking at how a word is written, a reader looks for topics like "Heaven" or "Earth." This method of semantic arrangement was used in many later works. It even influenced the creation of massive Chinese leishu, or encyclopedias, such as the Yongle Encyclopedia of 1408.

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