Write an unforgetable experience

I had a scary experience with my younger sister when I was 14 years old. One day, my younger sister and I quit school to go fishing in a pond near our school. She sat down on the corner of the fishpond and started fishing. The edge was small enough for only one person to stand there, so when I passed by her, I crashed on her. My younger sister fell into the fishpond. This pond was about 5 meters deep, while she could not swim. At that time, I was so scared. I had no idea what I should do. I could swim, but I almost died of swimming, which haunted me for a long time, and dared not to swim again. But when I saw my younger sister gradually sank, I decided to face up with my fear to save her. I jumped into the pond and pulled her up. Luckily, she was fine, but we both looked like drowned rats. This story taught me a lesson to be more careful when approaching deep water. And I will never forget this accident.