Chen Collection, Middle Volume Radical: Tree (mù) Character: xi Kangxi strokes: 15 Page 546, Entry 26 Pronounced xi. According to the Explaining and Analyzing Characters (Shuowen Jiezi), it is defined as a type of tree. Xu Xuan notes that it refers to hard wood. In the Ode on the Wood Spirit (Song Mumei Ci) by Yuan Jie, it is mentioned that the wood of the xi tree is bent and lacks sufficient hardness. It also refers to a component of a mechanism. In the Rhapsody on the Jingfu Palace (Jingfu Dian Fu) by He Yan, it is stated that the railings resemble a soaring snake and the xi resembles fine jade. The annotation explains that it refers to a wedge within a mechanism.