Pronounced pu (falling tone) according to the "Guangyun" and "Zhengyun", and bo (falling tone) according to the "Jiyun". The pronunciation is the same as "bo". The meaning of this character is the same as "bo". In the "Book of Han" (Qian Hanshu), Sima Xiangru's biography, it is written as "po shan po su". In the "Book of Later Han" (Hou Hanshu), Shi Bi's biography, it is written as "zhong yong po man". The character "po" is composed of "xia" and "nu".