"This is the martial art Old Empty cultivated," Lin Feng's gaze flickered. It seemed that Old Empty had refined the first move, "Slaying Shadow," and combined it with his unique shadow Wuhen, making it truly powerful.,This is such a precious treasure, how could Lin Feng let it slip away,"There must be some secret behind this door. Perhaps the ancient hall's owner left clues within,可惜 I simply cannot open it."。