Si Collection, Upper Volume Radical: Fire (huǒ) Kangxi Strokes: 4 Page 665, Entry 03 Ji Yun (Compilation of Rhymes): The same as fire. Also, Ji Yun (Compilation of Rhymes) and Lei Pian (Categorized Compendium) state it is pronounced biao. It refers to a blazing fire. Zhengzitong (True Meaning Compendium): The character form representing four dots is a variant of the character for fire. All characters with four dots at the bottom belong to the fire radical, similar to how water is represented by the three-drop water radical. To pronounce it differently as biao is incorrect. Note: While the four dots are indeed the fire character, because Ji Yun (Compilation of Rhymes) and Lei Pian (Categorized Compendium) specify a different pronunciation, it is likely not without basis. Zhengzitong (True Meaning Compendium) is being too rigid here.