Si Collection, Middle Volume. Radical: Fire (huǒ). Kangxi stroke count: 6. Page 665, Entry 05. Shuowen Jiezi: This is the original form of the character for light (guāng). It means bright. The structure of the character is composed of fire, positioned above a person, signifying that light illuminates. Paramita Sutra (Boluomiduo Jing): Like light and shadow, although they can be clearly described, they have no true physical substance that one can grasp and use to illuminate objects. Wushang Neimi Cangjing: It is like the light shining from inside a room at night, which radiates through the crevices; although the rays may be diverse and myriad, their fundamental source is one and the same.