Pronounced qu yu (falling tone) in Guangyun (Guangyun), and qiu yu (falling tone) in Jiyun (Jiyun). The pronunciation is the same as "qu". Explained as "ji" in Shuowen Jiezi (Shuowen Jiezi). Guangyun (Guangyun) explains it as a wooden board placed on the back of a donkey for carrying goods. For a detailed explanation, refer to the annotation of the character "ji".