Martial arts sects come from afar to participate in the Sword Congress, where Chang Ge is the anticipated winner. Qing Ci also plans to participate but through proxy via Ghost Boy. To prevent Yun Luo from getting in over her head, he sends Ghost Boy to preemptively target the Zhengyang elder who has the Crane’s tail, setting in motion a series of events involving Si Yuan and Man Qing. (Source: frankly at MyDramaList)