Zi Collection, Page Position: Upper, Radical: Skin (pí), Page 245, Entry 05 In the "Guangyun" (Guangyun), it is transcribed using the characters "wu" and "yuan." In the "Jiyun" (Jiyun), it is transcribed using the characters "wu" and "yuan." The pronunciation is the same as "wan" (falling tone). The "Boyya" (Boyya) explains it as separation, referring to the shedding and separation of skin. Also, in the "Guangyun" (Guangyun) and "Jiyun" (Jiyun), it is transcribed using the characters "wu" and "fan." The pronunciation is the falling tone of "wan." The meaning is the same. In the "Guangyun" (Guangyun), it is written as []. The "Yupian" (Yupian) also writes it as "ruan."