Chen Collection, Middle Volume. Radical: Tree (mù). Character: 杽. Kangxi stroke count: 8. Page 514, Entry 10. According to the Collection of Rhymes (Yunhui), the character for shackles (niu) was originally written as 杽. It is an ideographic character composed of the radical for tree and the element for hand. According to the Correct Meaning Through (Zhengzitong), the character for the wood used to make bows (niu yi) should not be written as 杽.