Chinese Literature - Qiequn zhizhang tu 切韻指掌圖 (www.chinaknowledge.de)

http://www.chinaknowledge.de/Literature/Science/qieyunzhizhangtu.html

The Qiequn zhizhang tu 切韻指掌圖 is a rhyme table from the Song period originally attributed to Sima Guang 司馬光.