The
Yunjing is the oldest existing
Chinese rhyme table – a series of charts which arrange
Chinese characters in large tables according to their tone and syllable structures to indicate their proper pronunciations. Current versions of the
Yunjing date to AD 1161 and 1203 editions published by Zhang Linzhi (張麟之). The
Yunjing's original author(s) and date of composition are unknown. Some of its elements, such as certain choices in its ordering, reflect features particular to the
Tang dynasty, but no conclusive proof of an actual date of composition has yet been found.