Middle Chinese (MC) phonology mainly refers to the phonological system underlying the Qièyùn 切韻, a rhyme (=rime) dictionary compiled in 601 by Lù Fǎyán 陸法言 of the Suí dynasty (581–618). The literary standard represented by the Qièyùn and its later revisions served as the rhyming standard for centuries of poetic composition, until modern times. In the periodization of Chinese phonology the rhyme book Zhōngyuá…