The scene is a classroom. A person wearing a white jacket with "SEVEN DAYS" and "ACE" printed on the back is sitting at a desk facing the front of the room. Two screens display the Tongji University logo and desktop icons. There are rows of desks and chairs in the room, a thermos on a desk, and a white board with the Tongji University logo on it. The walls are wood-paneled and there are fluorescent lights on the ceiling.