Xu Collection, Middle Volume Radical: Wrong (fēi) Page 1382, Entry 29 Tang Rhymes (Tangyun): Pronounced kao (falling tone). Collected Rhymes (Jiyun): Pronounced kao (falling tone); read the same as the character for reward (kao). Explained in Explaining Graphs and Analyzing Characters (Shuowen Jiezi) as mutually contradictory. The character is composed of the radical for wrong (fei), which indicates meaning, and the character for inform (gao), which indicates sound. Collected Rhymes (Jiyun) records that it may also be written as the character meaning to disturb (gao). Furthermore, Correct Meaning Guide (Zhengzitong) mentions that in modern times, the common term for attaching oneself to something is leaning (yi-kao). Also, Collected Rhymes (Jiyun) and Classified Chapters (Leipian): Pronounced ku (falling tone); read the same as the character for cruel (ku). The meaning is the same. Also, Collected Rhymes (Jiyun): Pronounced gu (falling tone); read the same as the character for pen (gu). It means to be interconnected. Some versions write it as a variant form (variant character).