Chen Collection, Upper Volume Radical: Tree (mù) Entry: Yi Kangxi strokes: 17 Page 556, Entry 24 Guangyun: Pronounced yi (falling tone). Jiyun and Yunhui: Pronounced yi (falling tone). Shuowen Jiezi says: It is a type of shrub. It can be used as material for bows. Record of Trades in the Winter Offices of the Rites of Zhou (Zhouli Kaogongji) says: Regarding the way bow makers select wood, Zhe wood is superior, and Yi wood is secondary. Erya: Explanations of Trees says: Niu is Yi. Guo commentary says: It resembles the Manchurian cherry tree, with thin leaves. Lu Ji, Commentary on The Marsh Has Niu (Xi You Niu Shu), says: It is called the ten-thousand-year tree, taking the meaning of the word yi (hundred million). Yunhui: Sometimes written in a variant form. Also, Jiyun and Leipian: Pronounced yi (falling tone). The meaning is the same. Textual research: In the Rites of Zhou, Record of Trades in the Winter Offices, the text originally said workmen, which has been corrected to bow makers in accordance with the original source.