Hai Collection, Lower Volume Radical: Tooth (chǐ) Nian Kangxi Stroke Count: 20 Page 1533, Entry 20 Pronounced nian (rising tone). According to the Explaining Graphs and Analyzing Characters (Shuowen Jiezi), it describes an open mouth with teeth visible. As written in the Rhapsody on Dengtuzi (Dengtuzi fu) by Song Yu: The lips are parted and the teeth are exposed. Note: This means the lips do not cover the teeth. Pronounced yan (dipping tone). Also pronounced yan (falling tone). The meaning is the same.