Teacher Panda sleeps in class, and her left ear listens to her right ear. Do you find it ridiculous? Funny because it didn't listen carefully and didn't take responsibility for itself. From the relevant public information, learning is the most convenient way for us to succeed, and attending classes is the most important part of our study life. But the funny thing is that when we are in class, our left ear listens to our right ear and we don't listen carefully to learn knowledge. This is not responsible for ourselves.