C744 The Immortal Skyfiend(2)

"Who are you?" Ling Feng's expression changed slightly. Although it was just an inconspicuous mass of black smoke in front of him, Ling Feng knew that it was definitely not simple. It was just as it said, and it was very likely that he would really die at its hands. Ever since he went through the sixth, seventh, and eighth floor, Ling Feng did not doubt this at all. In fact