One of the descendants of the Yan clan during the Song dynasty was Yan Zhengqing. When Eastern Jin was set up by Han Chinese nobles fleeing south, Yan Han was among the nobles and he was the ancestor of the Yan clan, who were related by blood to the Langye nobles who they married including the Wang clan of Langye, the Yin Clan of Chen commandery and Shen clan of Wuxing. Yan Han was the 13th generation ancestor of Yan Zhenqing.