Yang Dao watched the man climb the stage and clapped with the rest of his fellow students. The old man got on to the stage, shook hands with Professor Newton. The latter gestured the old man to take a seat, but the old man shook his head and gestured with his hands, seeming to say that he wanted to speak already.
Newton hurriedly nodded and stepped aside to let the man speak. The old man stood in front of the mic and tapped it twice.
DUB DUB...
The sound radiated in the auditorium. Everyone fell silent and focused on what the old man was about to say. An old voice filled with vicissitudes sounded, "Hello guys, I am Elliot. First, you all should relax a bit. Second, the topic for today's discussion is not physics."