Because the background has been tampered with. Yu Wanting is a character in the TV series The Book of the Sword. The Book of Blades and Swords is a costume martial arts TV series adapted from Jin Yong's novel of the same name, directed by, Wen and Zhenhua He, and co-starred by Qiao Zhenyu,,, and Ying Er. The play tells the story of the death of Yu Wanting, the chief helmsman of the Red Cross Society, and the death of his son Chen Jialuo. After many twists and turns, Chen Jialuo, who became a helmsman, lived up to his mission and led the Red Cross Rightists to launch a series of stories against Gan Long.