Lian Tianlu glanced at Yellow Sand Valley not far away, and spoke up, "After we discovered the whereabouts of the person who has been slaughtering Warrior Sects throughout Central State and stealing Spirit Veins, the five of us tracked him all the way here. That person entered Yellow Sand Valley and has been inside for five days without coming out. For safety's sake, we haven't made a move."
Recently, within the bounds of Central State, four or five sects had suffered attacks by several figures in black robes, and all had issues with their sect's Spirit Veins, which seemed to have been taken away by the assailant using some method.