Chen Collection, Middle Volume Radical: Tree (mù) Kangxi Strokes: 15 Page 550, Entry 03 Pronounced shu. The base. According to the Shuo Wen Jie Zi (Shuowen), it is the pivot of a door. According to the Erya (Erya), it is also called a wei. Also, that which controls movement is called a shuji (pivot or key mechanism). According to the Book of Changes (Yijing), speech and action are the pivot and key of the gentleman. Also, the first star of the Northern Dipper is called Tianshu. According to the Spring and Autumn Annals: Operations of the Dipper Pivot (Chunqiu Yundoushu), when the virtue of Tianshu appears, the phoenixes soar. Also, the essence of the five emperors is yellow, then it contains the shuniu (pivotal mechanism). According to the commentary on the Book of Rites (Liji), it refers to a type of ancestral sacrifice. Also, essential. According to the Xunzi (Xunzi), the ruler is the pivotal essential of governance and distribution. Also, the base, the center. According to the Huainanzi (Huainanzi), manage the four corners, then return to the center. Also, the Bureau of Military Affairs (shumi), the official in charge of military administration. According to the Collected Works of Sima Guang (Song Sima Guang Ji), when Wen Yanbo was appointed to the Bureau of Military Affairs, the edict stated: he shall still hold the title of Chancellor. Also, jinshu (the golden pivot), referring to the moon. According to the Mu Hua: Rhapsody on the Sea (Hai Fu), the great light harnesses its horses at the cave of the golden pivot. Also, the name of a tree. According to the Book of Odes (Shijing), the mountains have shu trees. According to the Treatise on Plants and Trees (Caomu Shu), the shu tree has thorns like a zhe tree, its leaves are like an elm, and when boiled and eaten, they are delicious and smoother than white elm. Pronounced chou. The meaning is the same. Also, pronounced ou. According to Wang Yi: Nine Laments (Jiusi), I shall lose the jade dipper, and leave behind the knob of the pivot. My heart is scorched, and because of this I am full of sorrow.