According to "Guangyun" (Guangyun) and "Jiyun" (Jiyun), the pronunciation is *bo kou qie*, and according to "Zhengyun" (Zhengyun), the pronunciation is *mo hou qie*, similar to "bu". "Shuowen Jiezi" (Shuowen Jiezi) explains it as pork sauce. According to "Jiyun" (Jiyun), the pronunciation is *pu hou qie*, similar to "pou". The meaning is the same. According to "Guangyun" (Guangyun) and "Jiyun" (Jiyun), the pronunciation is *pu qie*, similar to "pu". "Guangyun" (Guangyun) explains it as clothing that wraps the buttocks. According to "Guangyun" (Guangyun), the pronunciation is *fu lai qie*, similar to "fu". It is a surname.