Just at this moment, the old man suddenly gave a sharp long roar. The howling was incessant, and gradually became as loud as a cloud. Then he suddenly changed his tune. It was so hard to hear. Xie Chengqian covered his ears. He felt bored.

and in this strange long howling sound, the old man in Black opened his mouth. Suddenly, two sharp fangs appeared in his original yellow teeth, and his pupils became dark green in a moment. His ears grew longer and sharper at the speed visible to the naked eye. The most amazing thing was that his forehead suddenly opened a blood hole, and then a black...