According to "Tang Yun" (Tang Yun), this character is pronounced yu ju qie. "Ji Yun" (Ji Yun) states it is pronounced ou ju qie, similar to "yu". "Shuowen Jiezi" (Shuowen Jiezi) explains it as "chú jiǎ". "Yu Pian" (Yu Pian) describes it as a musical instrument. "Ji Yun" (Ji Yun) also mentions a theory that white tin is called "jiǎ". This character is sometimes written as "rú". Additionally, "Ji Yun" (Ji Yun) records another pronunciation: niu ju qie, similar to "yu". This refers to "chú jiǎ", a mechanical tool. Another theory refers to a type of vessel like a pot.