Si Collection, Middle Volume
Radical: Fire (huǒ)
炘
Kangxi strokes: 8
Page 667, Entry 23
Guangyun, Jiyun, Yunhui, Zhengyun: Pronounced xin.
Yupian: Originally written as xin (variant). Refer to the note for the character xin.
Also, in Yang Xiong's Ganquan Fu (Rhapsody on the Sweet Springs): Riding the heat of the flourishing rays, xin xin. The commentary by Shigu says: The appearance of brilliant light.
Also, in Jiyun and Leipian: Pronounced jin.
Bowu: To burn.