The Qianfenggu Si family, a well-known medical family in the Eastern Xia, declined due to a fire in the sixteenth year of Tianhe. The owner of the valley, Si Chengfeng, and his wife Han Xiaoli were both killed in the fire, and their only daughter Si Wuxie also disappeared after the fire. Rumors spread all over the world. Some said that the fire was set by Si Chengfeng's old lover Xu Chenxi, the poisonous Queen of Nanyue. Some said that it was a family thief in the valley who coveted Si's secret book and stole it through the fire but burned the Si and his wife to death. Some even said that the fire was inextricably linked to the Eastern Xia royal family... Five years later, Si Wuxie returned to control Qianfeng Valley and became the youngest valley owner in Qianfeng's history. She was nineteen years old this year.