Hai Collection, Lower Volume Radical: Tooth (chǐ) Chen: 17 Page 1532, Entry 01 Pronounced chěn (rising tone). According to Explaining Graphs and Analyzing Characters (Shuowen Jiezi), it refers to the loss of baby teeth. Boys grow teeth at eight months and lose them at eight years; girls grow teeth at seven months and lose them at seven years. Also pronounced chèn. Also pronounced chěn. The meaning is the same. From tooth and the sound of hua. According to Six Scripts Corrected (Liushu Zheng'e), the variant form written as chèn is incorrect.