Chen Collection, Middle Volume Radical: Tree (mù) Kangxi Strokes: 12 Page 533, Entry 01 Pronounced dong (falling tone). In the Shuowen Jiezi (Shuowen), it means the ridgepole. In the Explanation of Names (Shi Ming), it says: Dong means center. It resides in the middle of a house. In the Erya (Erya), it says: The ridgepole is called the fu. Guo Pu comments: The covering of a house is called the ridgepole; it is the ridge of the roof. In the Book of Changes (Yijing), it says: The ridgepole is high, which is auspicious. It also refers to the four eaves of a coffin. In the Zuo Commentary (Zuozhuan), under the second year of Duke Cheng, it mentions the four eaves of a coffin. Zheng Xuan comments: The four eaves are the ridgepoles set at the four corners. It is also the name of a star. In the Guangya (Boya), the star Arcturus is called the Dong Star. Pronounced dong. The name of a type of tree. In the Guanzi (Guanzi), in the section on the classification of land, it mentions the mulberry and the pine, the boxthorn and the willow, the elm, the peach, the willow, and the dong tree. The ridgepole of a roof also rhymes with the sound dong. In the poem by Su Shi (Su Shi) for the pavilion of Xu Ruzi, it says: Mr. Xu has flourishing pines, Mr. Chen has a grand ridgepole upon his hall. The deep pines are not felled, but when the hall is destroyed and the ridgepole breaks, he suffers in his person. Textual collation: The original text cites the Yi Ya, which has been corrected to the Explanation of Names (Shi Ming) according to the original book. In the Guanzi (Guanzi), the text has been corrected from the word chui to the word zhong according to the original text.