Pronounced zhi (level tone) and yu (entering tone) in the "Tang Yun" (Tang Yun), and ru (entering tone) in the "Jiyun" (Jiyun), pronounced the same as "chu" (level tone). "Shuowen Jiezi" (Shuowen Jiezi) explains it as "zhì chú" (zhì chú), meaning to stagnate. In "Leipian" (Leipian), it is sometimes written as "chú" (chú). Additionally, pronounced ni (entering tone) in the "Jiyun" (Jiyun), pronounced the same as "chí" (chí). "Boyá" (Boyá) explains it as meaning to stop. Furthermore, pronounced zhi (entering tone) and jia (entering tone) in the "Jiyun" (Jiyun), and zhai (entering tone) and jia (entering tone) in the "Yunhui" (Yunhui), pronounced the same as "chá" (chá). The meaning is the same.