Jiyun

The Jiyun is a rime dictionary published in 1037 during the Song Dynasty. The chief editor Ding Du and others expanded and revised the ''Guangyun''. It is possible, according to Teng and Biggerstaff , that Sima Guang completed the text in 1067. The ''Jiyun'' has 53,525 character entries , approximately twice as many as the ''Guangyun'', and likewise has 206 rime groups.