Menggu Ziyun is a 14th-century rime dictionary of Old Mandarin Chinese as written in the 'Phags-pa script that was used during the Yuan dynasty. The only surviving examplar of this dictionary is an 18
Christian tombstone of Yang Wengshe, dated 1314, from Quanzhou, China. The 'Phags-pa inscription reads ꡖꡟꡃ ꡮꡦ ꡗꡃ ꡚꡞ ꡏꡟ ꡈꡓ (-ung shee yang shi mu taw), representing Chinese weng she yang shi mu dao 翁舍楊氏墓道 "tomb memorial of Yang Wengshe".