Chen Collection, Middle Volume. Radical: Tree (mù). Kangxi stroke count: 15. Page 550, Entry 20. According to the Tang Rhyme (Tangyun) and the Collected Rhymes (Jiyun) and the Compendium of Rhymes (Yunhui), pronounced shu. It refers to a base. According to the Analytical Dictionary of Characters (Shuowen), it is a door pivot. According to the Erh-ya (Erya), a section on architecture, a pivot is called a wan. It also refers to the mechanism that controls motion, known as a pivot mechanism (shuji). According to the Book of Changes (Yijing), in the Appended Statements, it refers to the pivot mechanism of a gentleman's words and actions. It is also the name of the first star of the Big Dipper, known as the Heavenly Pivot (Tianshu). According to the Spring and Autumn Annals (Chunqiu), in the Yundoushu, when the virtue of the Heavenly Pivot is manifested, the phoenix soars. It also refers to the essence of the Five Emperors; when yellow, it contains the pivot link. According to the Book of Rites (Liji), in the commentaries on the Great Transmission (Dachuan), it refers to a type of ancestral sacrifice. It also means essential. According to the Xunzi, in the chapter on enriching the state, the ruler is the essential pivot of management and division. It also refers to the base or the center. According to the Huainanzi, in the chapter on the original way, after managing the four corners, one returns to the pivot. It also refers to the Bureau of Military Affairs (Shumi), the officials in charge of military administration. According to the collected works of Sima Guang of the Song Dynasty, regarding Wen Yanbo's appointment to the Bureau of Military Affairs, the edict states: he shall still head the Secretariat. It also refers to the Golden Pivot, meaning the moon. According to Mu Hua in the Rhyme-prose on the Sea (Haifu), the Great Brightness steers through the cavity of the Golden Pivot. It is also the name of a tree. According to the Book of Odes (Shijing), in the Airs of Tang, there are pivot trees on the mountain. According to the Commentary on Grasses and Trees, the pivot tree has thorns like those of the Cudrania, and its leaves are like those of an elm; when blanched, they can be eaten, being smoother and more pleasant than those of the white elm. According to the Orthography of Rhymes (Zhengyun), pronounced chou. The meaning is the same. According to the Collected Rhymes (Jiyun), pronounced ou. According to Wang Yi in the Nine Longings (Jiusi), I am about to lose the jade ladle and have lost the knob pivot. My heart is scorched and suffering, and I am anxious because of this.