The weathered face of the old man in the north broke into a smile, clapping heavily on Lin Feng's shoulder with his right hand.,"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.,"There must be some secret behind this door. Perhaps the ancient hall's owner left clues within,可惜 I simply cannot open it."。