Chen Collection, Middle Volume. Radical: Tree (mù). Character: 橭. Kangxi stroke count: 16. Page 555, Entry 14. Pronounced gu (level tone). A name for a type of tree. Also pronounced gu (level tone). According to the Classified Chapters (Leipian), the mu-gu is the mountain elm tree. The Rites of Zhou (Zhouli), Autumn Office, records: The Huzhuo official is responsible for expelling venomous water creatures; to kill their spirits, one must use the wood of the mountain elm to pierce elephant tusks and sink them into the water. The commentary notes that here it is pronounced ku (level tone). The ku-yu is the name of a type of tree. Also refers to the branches of a tree extending in all directions. Also pronounced hu (falling tone). A name for a type of tree. Textual research: The original text suggests piercing elephant tusks and burning them. Based on the original text of the Rites of Zhou (Zhouli), the word burn has been corrected to sink.