Zi Collection, Upper Volume, Page 21, Entry 04 Radical: Mouth (kǒu) Pronounced zi (rising tone) "Zi" is explained as a place name in the "Guangyun" (Guangyun) and "Jiyun" (Jiyun). The pronunciation is the same as "zi". The "Yupian" (Yupian) uses "zi yi" as the fanqie, and the "Jiyun" (Jiyun) uses "zu si" as the fanqie.