Wu Collection, Upper Volume Radical: Jade (yù) Di Kangxi strokes: 8 Page 727, Entry 16 Pronounced di Pronounced di Shuowen Jiezi (Shuowen): Dili, referring to the luster of a bright pearl. Records of the Grand Historian (Shiji), Biography of Sima Xiangru: Dili along the riverbank. Commentary: Ying Shao explains that this refers to a pearl as bright as the moon, whose radiance illuminates the riverbank.