According to "Back to the Curse of War" by official website, Jing Daole killed Miyoko because Miyoko and Caicai threatened to know the whereabouts of the other finger, but Jing Daole felt insulted and killed Miyoko and Caicai. In this process, the double-sided rafters occupy the body of Polygonum cuspidatum. In order to repay Caicai Zi and Meiyouzi for saving their lives, they promised to fulfill one of their requests, that is, to kill "Brain Flower Summer" and set Xia's body free, and they agreed.