Zhongyuan Yinyun , literally meaning "The phonology of the Central Plains", is a rime book from the Yuan Dynasty compiled by Zhou Deqing in 1324. An important work for the study of historical Chinese phonology, it testifies many phonolgical changes from Middle Chinese to , such as the reduction and disappearance of final stop consonants and the reorganization of the . Though often termed a "rime dictionary", the work does not provide meanings for its entries.
Background
''Zhongyuan Yinyun'' continued the tradition of ''Qieyun'' and other rime books. However, due to the phonological changes took place from the Sui Dynasty to the Yuan Dynasty, the information needed to be updated in accordance with the then phonological system.
From the middle of the 13th Century to the end of the 14th Century, Beiqu underwent quick development. The author of Sanqu , Zhou Deqing, delved into the research on Beiqu, discovering that it created many problems by not adhering to the rules of classical poetic composition. He thought that in order to better develop Beiqu , one would need to make a definite standard, especially in respect to language. According to his own experience, he was able to propose a set of rules for composing and reciting Běiqǔ, which came to be known as ''Zhongyuan Yinyun''.
Structure
In the earlier rime books, characters are first grouped by tone, then by rime. However, in ''Zhongyuan Yinyun'', the selected 5,866 characters , commonly rhymed in songs of the time, are first grouped into 19 rime groups, then further into four tonal groups: , , , . The traditional is assigned to the aforementioned four groups according to contemporary rules. This novel way of dividing the traditional four tones is known as "dividing the level tones into ''yin'' and ''yang'', assigning the entering tone to the other three tones" .
Within each rime-tonal group, homophonic characters are further grouped together, with each homophonic group separated by an empty circle. As a common character, whose pronunciation every literate person is supposed to know, is used to head each homophonic group, ''fanqie'' spelling is not employed, as in the earlier rime books, for indicating the pronunciations of the characters.
Zhou regarded the principal works of the Four Great Yuan Playwrights as foundational to verse in general; he considered their works to be "rimes joined with nature, words able to connect with the language of the world" , and at the same time also distinguished where the playwrights used rimes in non-standard places.
''Zhongyuan Yinyun'''s second half, Zhengyu Zuoci Qili , employs various examples to explain in detail both the rime charts' methods of use as well as issues concerning Beiqu's creation, standards and other aspects.
List of rimes
*歌戈韻 Ge-Ge
*家麻韻 Jia-Ma
*車遮韻 Che-Zhe
*齊微韻 Qi-Wei
*支思韻 Zhi-Si
*魚模韻 Yu-Mo
*皆來韻 Jie-Lai
*蕭豪韻 Xiao-Hao
*尤侯韻 You-Hou
*寒山韻 Han-Shan
*先天韻 Xian-Tian
*桓歡韻 Huan-Huan
*監鹹韻 Jian-Xian
*廉籤韻 Lian-Qian
*真文韻 Zhen-Wen
*侵尋韻 Qin-Xun
*庚清韻 Geng-Qing
*江陽韻 Jiang-Yang
*東鍾韻 Dong-Zhong
Influence
In respect to contemporaneous and later Beiqu works, ''Zhongyuan Yinyun'' has played a very strong guiding role; moreover, many later rhyme works have regarded it as a model on which they based their interpretations. Up until the flourishing of Nanqu , ''Zhongyuan Yinyun'' still held a tremendous influence.