Prompt: Generate a video with the following storyline: The mother asked her son: Why did the Chinese teacher perform dictation in class today, but you were not there? The son said: I made a mistake in writing the word \"bird\", and the top dot was written in the wrong direction. But I also got an A, which was okay, although not an A+. Mom thought: Well, it’s okay. At the same time, I thought to myself, this kid's mentality is at least A+.