Wu Collection, Upper Volume Radical: Jade (yù) Cheng Kangxi strokes: 13 Page 734, Entry 21 Pronounced zheng. According to the Explaining Graphs and Analyzing Characters (Shuowen Jiezi), it refers to the sound of jade. According to the Correct Meaning Through Investigation (Zhengzitong), any sound made by objects striking one another can be called cheng. As stated in a poem by Meng Jiao: Before the stream, the zither is suddenly tuned; across the woods, the cold jade rings with a cheng sound. As stated in a poem by Han Yu: Bamboo shadows are like fragmented gold chains, the spring sounds like jade chimes clinking. The common variant form is incorrect. Also, according to the Collected Rhymes (Jiyun), pronounced zheng, which is also the sound of jade.