Zi Collection, Upper Volume Radical: Mouth (kǒu) Page 16, Entry 09 Pronounced bi (falling tone) In "Guangyun" (Guangyun), it means head. In "Jiyun" (Jiyun), it means a puppy just born, or a first-born child. Identical to a certain character. Mistakenly written as a certain character in "Zihui Bu" (Zihui Bu).