Guangyun

Guangyun (Chinese: 廣韻) is a rime dictionary.

It was originally split into five volumes, two belonging to the Middle Chinese Ping tone (平聲), one each for the other three Middle Chinese tones, Shang (上聲), Qu (去聲) and Ru (入聲). Each tone was split into rimes, and under each rimes were grouped characters of the same onset, and under each entry, was given a brief explanation of its meaning.

The total number of rimes in Guangyun, split over the four tones is 206.