Xiyu, whose original name was Qinglan, got into a car accident while riding his bicycle on the road with two best friends. He traveled to the Tang Dynasty and became the eldest daughter of the Taiyuan Wang family, one of the four major noble families.
The original meaning of "Xiyu" is the flag. I remember that when General Wang won the battle, he was holding his newborn daughter and looking at his own flag all over the mountains and fields. He was very proud, so he named his daughter Xiyu.