I remember it was a cool afternoon. I jumped to the road, crossed the road, and arrived at the school. Just as I was walking with big strides, a fast electric car rushed over and knocked me down, landing head first. I suddenly felt dizzy, and my mother immediately sent me to the hospital. The doctor said that I was fine, but my leg was strained. Every time I went to school, my parents or classmates supported me. The pain was like a needle piercing me. I couldn’t attend the physical exercises and activity classes. When my classmates went out of the playground to attend class, I read in the classroom. Gradually, I began to try to walk normally, but the pain made me want to give up. At this time, I knew frustration. So I walked again and again, and finally, after a week, my legs healed, and now I have nothing to do. I can run and jump. I am lucky to have known frustration.