Chen Collection, Upper Volume Radical: Sun (rì) Yan Kangxi Strokes: 20 Page 501, Entry 30 According to Correct Characters (Zhengzitong), this is identical to the character Yan. Records of the Grand Historian (Shiji), Treatise on the Sacrifices to Heaven and Earth (Fengshan Shu): Reached the mountain of Zhongshan Yan. History of the Former Han (Qianhan Shu), Annals of Emperor Wu: Written as Yan. Also, according to the dictionary Erya (Boya), Yan means to be warm.