Qieyun

The Qieyun () is a Chinese rhyme dictionary that was published in 601 during the Sui dynasty. The book was a guide to proper reading of classical texts, using the fanqie method to indicate the pronunciation of Chinese characters. The Qieyun and later redactions, notably the Guangyun, are important documentary sources used in the reconstruction of historical Chinese phonology.

==History== The book was created by Lu Fayan (Lu Fa-yen; ) in 601. The preface of the Qieyun describes how the plan of the book originated from a discussion with eight of his friends 20 years earlier at his home in Chang'an, the capital of Sui China.