Guangyun

Its full name was Dà Sòng chóngxiū guǎngyùn (大宋重修廣韻, literally "Great Song revised and expanded rhymes").

Chen Pengnian (陳彭年, 961–1017) and Qiu Yong (邱雍) were the chief editors.

Pingshui Yun system, the standard for poetry rhyming after the Song Dynasty, is also based on Guangyun.

Until the discovery of an almost complete early 8th century edition of the Qieyun in 1947, the Guangyun was the most accurate available account of the Qieyun phonology, and was heavily used in early work on the reconstruction of Middle Chinese.

[1][2] The Guangyun has a similar hierarchical organization to the Qieyun: The dictionary has a total of 26,194 character entries, each containing a brief explanation of the character's meaning.