Xiaoming was beaten by his father.

Dad, it's really my fault that I didn't show it to you, but actually I didn't give it to you, not to deceive you, just because of my guilt. You worked hard to earn money to send me to school. I only got such a score, for fear of breaking your heart. What I'm actually thinking is that in this winter vacation, I must review my previous knowledge and actively preview the textbooks for next semester, so that I can get satisfactory results in the first monthly exam after school starts, and then confess to you, so maybe you won't be so sad! But now that you know, you are already sad, so don't say other empty words. Just wait and see my holiday efforts and next semester's results!