Wu Yu 吳域 (c. 1100-1154) was an early and important Chinese

philologist Philology () is the study of language in oral and written historical sources; it is the intersection of textual criticism, literary criticism, history, and linguistics (with especially strong ties to etymology). Philology is also defined as th ...

and

phonologist Phonology is the branch of linguistics that studies how languages or dialects systematically organize their sounds or, for sign languages, their constituent parts of signs. The term can also refer specifically to the sound or sign system of a ...

and author of the 韻補 ''Yunbu'', in which he noted the historical change of pronunciation of Shijing rhymes.Behr, Wolfgang. 2005. "Language Change in premodern China: notes on its perception and impact on the idea of a 'constant way'." ''Historical truth Historical Criticism and Ideology: Chinese Historiography and Historical Culture from a New Comparative Perspective''. Helwig Schmidt-Glintzerr, Achim Mittag, and Jörn Rüsen, eds. pp. 13-51, esp. 34.

References

12th-century Chinese people Chinese scholars {{China-linguist-stub