Yan Yuntai died in the 40th episode of Xige Xiaofei. According to the story of the TV series Yanyuntai, the little princess Sig was married by Ye Luxian before Xiaoyan entered the palace. In the 40th episode, the ambitious little princess Sig encourages two concubines to tell Xiaoyan about the murder of Xiao Siwen in Lushan Mountain. When Ye Luxian knew about it, she was put in the cold shoulder. Finally, the little princess Sig was killed by Xiaoyan.