Chou Collection, Upper Volume Radical: Mouth (kǒu) Character: Yi Kangxi strokes: 22 Page 215, Entry 10 Pronounced yi (falling tone). According to the Comprehensive Rhymes (Guangyun), it refers to laughing in one's sleep. According to the Jade Chapters (Yupian), it also refers to sleep-talking. According to the Collected Rhymes (Jiyun), it refers to sounds made while asleep. From the Book of Liezi (Liezi), Zhou Mu Wang section: Talking and moaning in one's sleep. According to the Danqian Records (Danqianlu) by Yang Shen, it is written as an (variant form). According to the Gleanings from History (Shiyiji), Lu Meng of Wu spoke in his sleep about the Book of Changes (Yijing). According to the Comprehensive Rhymes (Guangyun), it is the same. According to the Rhyme Compendium (Yunhui), the book writes it as a variant form. Textual Research: In the Book of Liezi (Liezi), Zhou Mu Wang section, the original text reads as referring to sleep-talking and moaning. Per the original text, the character shi has been corrected to mian.