Chen Collection, Middle Volume. Radical: Tree (mù). Kangxi stroke count: 21. Page 562, Entry 19. Shuowen Jiezi states the pronunciation is jian. The meaning is a wedge. Xu Kai says it is the modern character for jian (sharp). Dai Tong says Xu Kai is incorrect, and that in ancient times, the character for zhen (anvil) was written as this character. Chang Jian suggests this character and the character jian (to exterminate) are the same. Zhengzitong notes that the two characters differ in pronunciation and meaning, and the suggestion in Chang Jian is incorrect. Dai Tong is also incorrect to claim that the ancient form of the character for anvil is this character. Xu Kai’s explanation is the accepted one. However, referencing the line in He Yan’s Rhapsody on Jingfu Hall (Jingfu Dian Fu) regarding the support structures, the term here is used in parallel with other architectural terms and cannot be interpreted as the word for sharp. Thus, Xu Kai’s explanation is not entirely accurate. Li Shan’s commentary states that this character refers to a type of tenon or joinery, which has a meaning close to a wedge. Additionally, Jiyun provides the pronunciation as xian. It also provides the pronunciation as jin. The meanings are the same. Furthermore, Tangyun provides the pronunciation as shan. It is the same as the character for a type of tree that resembles a pine.