Wu Collection, Upper Volume Radical: Jade (yù) Entry: Lei Kangxi strokes: 20 Page 744, Entry 27 Pronounced lei. According to the Explanation of Simple and Compound Characters (Shuowen Jiezi), it refers to a jade vessel. The Collected Rhymes (Jiyun) notes that it is sometimes written as a variant form. Also pronounced lei. The meaning is the same. The Collected Rhymes (Jiyun) notes that it is sometimes written as a variant form. Also pronounced lei. The meaning is the same.