No. According to the History Query website, Yu Fu, also known as Yu Tie, was an ancient physician. According to legend, he was good at external treatment with traditional Chinese medicine and was a minister of the Yellow Emperor. Emperor Yan is the honorific title given to the leader of the tribe surnamed Jiang in ancient China. His name was Shennong, also known as Kuei, Lianshan, Lieshan, and Zhu Xiang. The two are not the same person.