Si Collection, Upper Volume Radical: Water (shuǐ) Ni Kangxi stroke count: 13 Page 636, Entry 02 Pronounced nai (falling tone) Pronounced nai (falling tone) According to the Explaining Graphs and Analyzing Characters (Shuowen Jiezi), it means the flooding of water. According to the Jade Chapters (Yupian), it refers to the appearance of water waves.